JDS Uniphase SWS15100 User manual

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SWS15100 AND SWS16100
SWEPT WAVELENGTH SYSTEMS
User’s Manual
ATTENTION!
For the JDS Uniphase End User License
Agreement, see the eleventh page of this manual.
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SD000317 Rev. G January 2001
Contents
Terms ..............................................................................................................................................1
Acronyms.............................................................................................................................1
Definitions.............................................................................................................................3
Safety Information, Instructions, and Symbols ..........................................................................5
Safety Information................................................................................................................5
Classification............................................................................................................5
Disconnecting from Line Power...............................................................................5
Line Power Requirements .......................................................................................5
Fuse Type................................................................................................................5
Laser Specifications.................................................................................................5
Safety Instructions................................................................................................................6
Before Initializing and Operating the Equipment......................................................6
Operating the Unit....................................................................................................6
Safety Symbols....................................................................................................................7
Compliance..........................................................................................................................8
CE Compliance........................................................................................................8
FDA-CDRH Compliance..........................................................................................8
General Information and Specifications.....................................................................................9
General Information..............................................................................................................9
Transmitter and Cabinet........................................................................................11
Receiver.................................................................................................................11
Data Acquisition Board...........................................................................................12
Software.................................................................................................................12
User-Supplied Computer.......................................................................................12
Key Features..........................................................................................................12
Applications............................................................................................................12
Standard Accessories............................................................................................13
Optional Components and Accessories................................................................14
Specifications.....................................................................................................................15
SWS15100 System ...............................................................................................15
Transmitter.............................................................................................................17
Receiver.................................................................................................................20
Getting Started............................................................................................................................21
Before Initializing and Operating the Equipment................................................................21
Initial Inspection..................................................................................................................21
Operating Environment......................................................................................................22
Temperature...........................................................................................................22
Humidity..................................................................................................................22
Ventilation...............................................................................................................22
Storing and Shipping..........................................................................................................22
Claims and Repackaging.......................................................................................23
Returning Shipments to JDS Uniphase.................................................................23
Cleaning Connectors.........................................................................................................24
Installation...........................................................................................................................25
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January 2001 SD000317 Rev. G
Installing the Transmitter....................................................................................................25
Source Optics Module............................................................................................25
Tunable Laser Source............................................................................................25
Transmitter Cabinet...............................................................................................25
Installing the Source Optics Module and Tunable Laser Source...........................26
Setting and Verifying Default Source Optics Module Values.................................28
Powering Up the Source Optics Module and Tunable Laser Source....................28
Replacing Output Ports on the Source Optics Module..........................................29
Installing the Standard Receiver Chassis..........................................................................29
Assembling the Receiver.......................................................................................30
Using the Dual Band Selector Switch Module (DBSSM) with the SWS...........................31
Installing the Dual Band Selector Switch Module (DBSSM).............................................32
Connecting the Parallel Port Interface...................................................................33
Installing Additional Receiver Chassis...................................................................35
Powering Up the Receiver.....................................................................................37
Connecting the Transmitter...............................................................................................38
Installing Additional Detector Modules................................................................................38
Attaching Detector Adapters..................................................................................39
Attaching Universal Connector Adapters...............................................................39
Installing the Compact Two-Channel Receiver.................................................................41
Installing the Data Acquisition Board..................................................................................41
Installing the Software........................................................................................................43
Minimum Hardware Requirements........................................................................43
Testing the SWS Components..........................................................................................51
Testing the Receiver..............................................................................................51
Testing the Parallel Port Interface..........................................................................52
Testing the Data Acquisition Board........................................................................52
Testing the Output Ports........................................................................................52
Testing the System............................................................................................................53
Testing System Noise............................................................................................53
Operating and Maintenance Instructions.................................................................................55
Source Optics Module Front Panel....................................................................................55
Source Optics Module Rear Panel....................................................................................55
Tunable Laser Source Front Panel....................................................................................55
Tunable Laser Source Rear Panel....................................................................................56
Receiver Front Panel.........................................................................................................56
Receiver Rear Panel..........................................................................................................56
Compact Two-Channel Receiver Front Panel...................................................................57
Compact Two-Channel Receiver Rear Panel...................................................................57
Control Module Front Panel................................................................................................57
Detector Module Front Panel.............................................................................................58
Dual Band Selector Switch Module Front Panel................................................................58
Four-State Polarization Controller Front Panel..................................................................58
Four-State Polarization Controller Rear Panel..................................................................59
Setting Source Optics Module Parameters.......................................................................59
Power-Up Screen...................................................................................................59
Main Menu..............................................................................................................60
Setup Menu............................................................................................................60
Manual Menu..........................................................................................................61
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SD000317 Rev. G January 2001
Remote Option.......................................................................................................62
Display Option........................................................................................................63
Source Optics Module Operation...........................................................................63
Using SWS Software.........................................................................................................64
SWS Program........................................................................................................64
SWS User Interface Main Menu.............................................................................65
File Menu................................................................................................................65
Mode Menu.............................................................................................................68
System Menu.........................................................................................................69
Window Menu.........................................................................................................72
Help Menu...............................................................................................................73
Configuration Windows..........................................................................................74
Chart Area..............................................................................................................74
Common Area........................................................................................................75
Status/Analysis Area..............................................................................................76
Reference Scans Tab Page..................................................................................77
Process and Display Options Tab Page...............................................................78
Analysis Tab Page.................................................................................................81
Markers Tab Page..................................................................................................88
Exiting the Software...............................................................................................89
Preparing for Measurements .............................................................................................89
Zeroing the System................................................................................................89
Zeroing for a DUT...................................................................................................89
Example Application: Zeroing for an FBG using a Circulator and Reflector..........90
Measuring Dark Voltage.....................................................................................................91
Measuring Zero Loss..........................................................................................................92
Measuring Insertion Loss...................................................................................................92
Measuring Polarization Dependent Loss...........................................................................93
Interpreting PDL Data.............................................................................................94
Characterizing Specific Devices........................................................................................94
Single-Output Devices...........................................................................................94
Acquiring Zero Loss Reference for a Device.........................................................95
Measuring Insertion Loss of a Device....................................................................95
Measuring PDL of a Device...................................................................................96
Multiple-Output Devices.........................................................................................97
Example Application: Characterizing Fiber Bragg Gratings in Reflection.............98
Measuring Insertion Loss of an FBG......................................................................98
Measuring PDL of an FBG.....................................................................................99
Calibrating the Equipment..................................................................................................99
General Information................................................................................................99
When do I Confirm Wavelength Accuracy? When do I Calibrate?........................99
Calibrating Multiple Receivers..............................................................................109
Using Alternative Gas Cells.....................................................................................................110
Gas Cell............................................................................................................................110
Notes................................................................................................................................110
L-Band or C-Band Calibration Using the H13C14N Cell........................................112
Verifying Power Calibration..................................................................................114
Calibrating Power.................................................................................................115
Restoring Factory Calibration Values ..................................................................117
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January 2001 SD000317 Rev. G
Enabling Wavelength Diagnostics on C-Band and L-Band SWS Systems....................118
Changing the .INI File on C-Band Systems.........................................................119
Changing the .INI File on L-Band Systems..........................................................119
Resetting the Number of Points on the Source Optics Module...........................119
Calibrating Wavelength for Diagnostics...............................................................121
Using Wavelength Diagnostics............................................................................121
Maintaining the System........................................................................................121
Programming Guide ..................................................................................................................122
Application Development using the SWS DLLs ..............................................................122
DLL Architecture..................................................................................................122
Installing the Dynamic Link Libraries....................................................................122
Using the DLL Components.................................................................................123
Development Environment...................................................................................123
DLL Function Descriptions ..................................................................................125
Initializing and Referencing the SWS..................................................................125
Insertion Loss Functions......................................................................................125
Polarization Dependent Loss Functions..............................................................126
Choosing between C and L Band........................................................................126
Analytical Functions .............................................................................................127
Miscellaneous Functions......................................................................................128
Finishing Your SWS Session...............................................................................128
Interface Descriptions......................................................................................................129
initSWS................................................................................................................129
triggerTrace..........................................................................................................129
getTraceStatus.....................................................................................................130
getChannelPolarization........................................................................................130
isDarkVoltageDone..............................................................................................130
getAverageDarkVoltagePower.............................................................................131
isTraceDone.........................................................................................................131
getTraces.............................................................................................................132
getTracePolarization............................................................................................132
getDataSize..........................................................................................................133
getReference........................................................................................................133
getDarkVoltage.....................................................................................................134
getILTrace............................................................................................................134
getPeakPower......................................................................................................135
getBandwidth........................................................................................................136
getCenterWave....................................................................................................137
writeLED...............................................................................................................138
blinkLED...............................................................................................................138
setPolarizationControl..........................................................................................139
getPolarizationControl..........................................................................................139
isDarkVoltageDone..............................................................................................140
getAverageDarkVoltagePower.............................................................................140
getChannelPolarization........................................................................................141
isZeroLossDone...................................................................................................141
getPDLReferences ..............................................................................................142
acquirePDL..........................................................................................................142
processPDL.........................................................................................................143
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SD000317 Rev. G January 2001
getPDLTrace........................................................................................................143
getAverageZeroLossPower..................................................................................144
getLocalPeakPower.............................................................................................145
getLocalBandwidth...............................................................................................146
getLocalCenterWave...........................................................................................147
setBand................................................................................................................148
getPassBand........................................................................................................148
getLocalPassBand...............................................................................................150
getFlatness...........................................................................................................151
getITUSize............................................................................................................152
getITU 152
getCrossTalk........................................................................................................153
getChannelList.....................................................................................................154
getOWBInfo..........................................................................................................155
setUnits ................................................................................................................157
getUnits ................................................................................................................157
terminateSWS......................................................................................................158
DLL Error Returns................................................................................................159
Programming Examples..................................................................................................160
Contents of CD-ROM...........................................................................................160
Visual Basic Programming Example...................................................................161
C Programming Example....................................................................................161
Programming Flowcharts ....................................................................................162
External Control of the Source Optics Module.................................................................172
Command Formats..............................................................................................172
Command Paths..................................................................................................173
Optional Commands............................................................................................173
Parameter Types .................................................................................................174
Programming the Source Optics Module........................................................................175
SCPI Command Tree..........................................................................................175
SCPI Common Commands.................................................................................177
SCPI Status Commands .....................................................................................180
User Commands..................................................................................................182
Reference...................................................................................................................................189
Troubleshooting................................................................................................................189
Troubleshooting Flowcharts.............................................................................................199
Testing the System..............................................................................................200
Testing the Source Optics Module.......................................................................202
Testing for System Noise.....................................................................................205
Testing Source Optics Module Power Levels......................................................206
Parallel Port Interface Troubleshooting............................................................................207
Recording SWS Performance.........................................................................................209
SWS Performance Checklist...............................................................................210
Error Messages in SWS..................................................................................................215
Error Messages from the Tunable Laser Source................................................215
Error Messages from the Source Optics Module................................................216
Error Messages from the Software......................................................................217
Detailed Error Messages .....................................................................................218
How the SWS Calculates Values ....................................................................................221
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January 2001 SD000317 Rev. G
Threshold Power..................................................................................................221
Wavelength at the Minimum.................................................................................221
Minimum Power...................................................................................................221
Wavelength at the Maximum................................................................................221
Maximum Power..................................................................................................221
Center Wavelength using a Threshold Relative to the Baseline.........................221
Center Wavelength using a Threshold Relative to the Peak...............................222
Power at the Center Wavelength.........................................................................222
Bandwidth.............................................................................................................222
Averages ..............................................................................................................223
Minimum Loss in PDL Mode................................................................................223
Maximum Loss in PDL Mode...............................................................................224
Polarization Dependent Loss...............................................................................224
Passband.............................................................................................................224
Flatness................................................................................................................224
Crosstalk..............................................................................................................224
Cumulative Crosstalk (TXT).................................................................................224
Measuring Parameters.........................................................................................225
Index............................................................................................................................................229
Figure 1: Swept Wavelength System with Polarization Controller and Device Under Test.........10
Figure 2: Connector Cleaning (connector type can vary).............................................................24
Figure 3: Transmitter Unit Front Setup.........................................................................................26
Figure 4: Transmitter Unit Rear Setup..........................................................................................26
Figure 5: Four Output Ports on Source Optics Module................................................................29
Figure 6: Receiver Front Setup.....................................................................................................30
Figure 7: Receiver Rear Setup.....................................................................................................31
Figure 8. Front panel of the Dual Band Selector Switch Module (DBSSM)..................................32
Figure 9. DIP switch settings........................................................................................................33
Figure 10. Starting the SWS Setup Test Wizard..........................................................................34
Figure 11. SWS Test and Setup Wizard......................................................................................35
Figure 12. Black DIP switches on older versions of chassis .......................................................36
Figure 13. Red DIP switches on newer chassis..........................................................................36
Figure 14: Additional Chassis DIP Switch Setup..........................................................................36
Figure 15: Setup for Adding a Receiver........................................................................................37
Figure 16: SWS Front Setup.........................................................................................................38
Figure 17: Adapter and Connector................................................................................................40
Figure 18: Universal Connector Adapters.....................................................................................40
Figure 19: Dip Switch Settings on the Data Acquisition Board.....................................................42
Figure 20: Receiver Address DIP Switch Setup...........................................................................42
Figure 21. Starting SWS Testing and Setup Wizard....................................................................45
Figure 22: Interface Configuration.................................................................................................46
Figure 23: Selecting the Parallel Port............................................................................................47
Figure 24: Selecting the Interface Configuration...........................................................................47
Figure 25. Testing I/O interface and a Dual Band Switch.............................................................48
Figure 26. Testing the data collection procedure in C (a) and L (b) bands..................................49
Figure 27. Nominal Size Detection...............................................................................................49
Figure 28. The SWS Testing and Setup Wizard. Test complete.................................................50
Figure 29. Starting the Wizard from the Start button....................................................................51
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SD000317 Rev. G January 2001
Figure 30: Source Optics Module Front Panel (Model SWS15102).............................................55
Figure 31: Source Optics Module Rear Panel..............................................................................55
Figure 32: Tunable Laser Source Front Panel..............................................................................55
Figure 33: Tunable Laser Source Rear Panel..............................................................................56
Figure 34: Receiver Chassis Front Panel.....................................................................................56
Figure 35: Receiver Chassis Rear Panel.....................................................................................56
Figure 36: Compact Two-Channel Receiver Front Panel............................................................57
Figure 37: Compact Two-Channel Receiver Rear Panel.............................................................57
Figure 38: Control Module Front Panel.........................................................................................57
Figure 39: Detector Module Front Panel.......................................................................................58
Figure 40: Dual Band Switch Selector Module Front Panel..........................................................58
Figure 41: Four-State Polarization Controller Front Panel............................................................59
Figure 42: Four-State Polarization Controller Rear Panel............................................................59
Figure 43: SOM Power-Up Screen...............................................................................................60
Figure 44: Main Menu of the SOM.................................................................................................60
Figure 45: Setting SOM Parameters.............................................................................................61
Figure 46: Changing Parameter Values........................................................................................61
Figure 47: Manual Mode Settings on the SOM..............................................................................62
Figure 48: Setting Parameters in Manual Mode............................................................................62
Figure 49: Remote Option on the SOM........................................................................................63
Figure 50: Display Option on the SOM.........................................................................................63
Figure 51: SOM Status Display.....................................................................................................64
Figure 52: Components of SWS15100 Software.........................................................................64
Figure 53: SWS15100 Main Program Window.............................................................................65
Figure 54: File Menu......................................................................................................................66
Figure 55: Dialog Box to Save Data Set.......................................................................................67
Figure 56: Mode Menu...................................................................................................................68
Figure 57: System Menu...............................................................................................................69
Figure 58: OWB Info Option..........................................................................................................70
Figure 59: General Setup Tab.......................................................................................................71
Figure 60: Switch Setup Tab.........................................................................................................71
Figure 61: System Setup Tab.......................................................................................................72
Figure 62: Window Menu..............................................................................................................72
Figure 63: Help Menu....................................................................................................................73
Figure 64: Configuration Window..................................................................................................74
Figure 65: Common Area..............................................................................................................75
Figure 66: Status Area..................................................................................................................76
Figure 67: Reference Scans Tab Page........................................................................................77
Figure 68: Process and Display Page..........................................................................................78
Figure 69: Dialog Box to Modify Axis Properties...........................................................................81
Figure 70: Dialog Box to Modify Trace Properties ........................................................................81
Figure 71: Analysis Tab Window to Display Analysis Results .....................................................82
Figure 72: Analysis Setup Dialog Box...........................................................................................84
Figure 73: Selection of Channel or ITU Grid Settings...................................................................86
Figure 74: Markers Page...............................................................................................................88
Figure 75: Zeroing the System for a DUT.....................................................................................89
Figure 76: Acquiring a Reference.................................................................................................90
Figure 77: Setup for Zeroing for an FBG.......................................................................................91
Figure 78: Acquiring a Zero Loss Reference................................................................................95
Figure 79: Characterizing a Single-Output Device.......................................................................96
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January 2001 SD000317 Rev. G
Figure 80: Characterizing a Multiple-Output Device.....................................................................97
Figure 81: Setup for Characterizing the FBG...............................................................................98
Figure 82. Tunable Laser Source Calibration Setup...................................................................100
Figure 83. Set up the system in this way to calibrate receiver...................................................101
Figure 84. Select the Calibration option from the menubar........................................................102
Figure 85. Select the Calibration option from the menubar........................................................102
Figure 86. C Band Trace using 12C2H2 Acetylene Cell.............................................................103
Figure 87. L Band Trace using 13C2H2 Acetylene Cell.............................................................104
Figure 88: Absorption Lines of 12C2H2Acetylene Cell................................................................105
Figure 89: Absorption Lines of 13C2H2Acetylene Cell................................................................106
Figure 90.....................................................................................................................................108
Figure 91. Click “YES” to restore the last calibration data..........................................................109
Figure 92. View of the INI file in Microsoft Notepad.....................................................................111
Figure 93: Absorption Lines of H13C14N Cell..............................................................................112
Figure 94: Power Calibration Setup............................................................................................114
Figure 95: Power Calibration Window ........................................................................................116
Figure 96: SWS Data Collection and Processing......................................................................163
Figure 97: Insertion Loss Mode Processing...............................................................................164
Figure 98: Zero Loss Data in Insertion Loss Mode.....................................................................165
Figure 99: Acquire Trace.............................................................................................................166
Figure 100: Get Insertion Loss....................................................................................................167
Figure 101: Process Insertion Loss Trace.................................................................................168
Figure 102: PDL Mode Processing.............................................................................................169
Figure 103: Zero Loss Data in PDL Mode...................................................................................170
Figure 104: Additional PDL Processing......................................................................................171
Figure 105: Testing the System (first part).................................................................................200
Figure 106: Testing the System (continued)...............................................................................201
Figure 107: Testing the SOM......................................................................................................202
Figure 108: Testing the Receiver (first part)...............................................................................203
Figure 109: Testing the Receiver (continued).............................................................................204
Figure 110: Testing for System Noise........................................................................................205
Figure 111: Testing for SOM Power...........................................................................................206
Figure 112. PPI Troubleshooting Procedure. Section 1.............................................................207
Figure 113. PPI Troubleshooting Procedure. Section 2.............................................................208
Figure 114: Calculating Bandwidth.............................................................................................225
Figure 115: Calculating Passband..............................................................................................226
Figure 116: Calculating Flatness................................................................................................227
Figure 117: Calculating Right Crosstalk.....................................................................................228
For sales and service information,
contact JDS Uniphase or your local representative.
JDS Uniphase Corporation
570 West Hunt Club Road
Nepean, Ontario, Canada
K2G 5W8
Phone: [phone]
Fax: [phone]
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SD000317 Rev. G January 2001
E-mail: [email protected]
Website: http://www.jdsunph.com
Customer support is available seven days a week, 24 hours a day:
SWS Hotline in North America: 1 800 367-7029
JDS Uniphase International Technical Support: 1 613 727-1304, extension 4999
E-mail (non-emergency): [email protected]
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JDS Uniphase Corporation Swept Wavelength System Software
For WINDOWS
Version: See User's Manual/CD ROM Label
JDS UNIPHASE CORPORATION END USER LICENSE AGREEMENT
IMPORTANT - READ CAREFULLY: This End User License Agreement (“EULA”) is a legal
agreement between you (either an individual or a single entity) and JDS Uniphase
Corporation and its subsidiaries (collectively "JDS Uniphase") for the JDS Uniphase
product identified above, which includes computer software and associated media and
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SOFTWARE, you agree to be bound by the terms of this EULA. If you do NOT agree to
the terms of this EULA, promptly return the unopened and unused SOFTWARE to the
place from which you obtained it for a full refund.
SOFTWARE LICENSE: The SOFTWARE is protected by intellectual property laws and international
treaties, including copyright, and is only licensed, not sold.
1. GRANT OF LICENSE This EULA grants you the following rights:
1.1 JDS Uniphase grants to you the right to install and use one copy of the SOFTWARE on a single
computer, solely for use in conjunction with JDS Uniphase supplied hardware or hardware approved by
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or for hazardous environments or applications requiring fail safe performance such as in the operation of
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rights will be defined in Clause 52.227-19(c)(2) of the FAR, or if acquired by NASA, Clause 18-52.227-86(d)
of the NASA Supplement to the FAR.
8.5 You agree to comply with all export regulations pertaining to the SOFTWARE in effect from time to
time. Without limiting the generality of the foregoing, you expressly warrant that you will not directly or
indirectly export, re-export, or transship the SOFTWARE in violation of any export laws, rules or regulations
of Canada, the United States or the United Kingdom.
8.6 No term or provision of the Agreement shall be deemed waived and no breach excused unless such
waiver or consent is in writing and signed by the party claimed to have waived or consented. The waiver by
either party of any right hereunder, or of the failure to perform or of a breach by the other party, shall not be
deemed to be a waiver of any other right hereunder or of any other breach or failure by such other party,
whether of a similar nature or otherwise.
8.7 This Agreement shall be governed by and construed in accordance with the applicable laws of the
Province of Ontario and Canada, without regard to conflict of law principles. The application of the United
Nations Convention on Contracts for the International Sale of Goods is hereby expressly excluded.
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Terms – 1
Terms
Acronyms
AC Alternating current
ANSI American National Standards Institute
APC Angled polished connector, angled physical contact
ASCII American National Standard for Communication Information Interchange
BW Bandwidth
CD-ROM Compact disk - read-only memory
CM Control module
CW Center wavelength
DBSSM Dual band selector switch module
DC Direct current
DIP Dual inline package
DLL Dynamic link library
DM Detector module
DMA Direct memory access
DUT Device under test
DWDM Dense wavelength division multiplexer
ECP Extended capability port (parallel/printer)
EEPROM Electrically erasable programmable read-only memory
EIA Electrical Industries Association
EPP Enhanced parallel port
ESD Electrostatic sensitive device
FBG Fiber Bragg grating
FWHM Full width at half maximum
GHz Gigahertz
GPIB General purpose interface bus
GUI Graphical user interface
IEEE Institute of Electronic and Electrical Engineers
IL Insertion loss
I/O Input/output
ITU International Telecommunications Union
LED Light emitting diode
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2– Terms
MAV Message available bit
MB Megabyte
MDI Multiple document interface
NIST National Institute of Standards and Technology
nm Nanometer
OWB Optical Work Bench
PC Polished connector, physical contact
PDL Polarization dependent loss
pm Picometer
PM Polarization-maintaining
PMD Polarization mode dispersion
PPI Parallel port interface
RAM Random access memory
RMA Return material authorization
SCPI Standard Commands for Programmable Instruments
SOM Source Optics Module
SPP Standard Parallel Port
SWS Swept Wavelength System
TPS Transmitter polarization state
UCA Universal connector adapter
VB Visual Basic
WDM Wavelength division multiplexer
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Terms – 3
Definitions
Analysis tab page Where the user selects what type of analysis results are to be shown,
and for which channels.
Bandwidth The spectral width of a signal or filter. The bandwidth is defined as the
width (in wavelength) of the peak of a beam measured at a specified
threshold. The threshold is a power level below the maximum for a
beam with a maximum peak or a power level below the average
baseline, if the peak is a minimum.
Center wavelength The interpolated wavelength marking the center of the peak measured
at any threshold.
Channel In SWS documents, channels refer to physical detectors. The upper
detector on each detector module is an odd-numbered channel, while
the lower detector is an even-numbered channel. In communications,
the word “channel” is more specific to ITUchannels, which are
defined wavelength regions. Refer to ITU channels in full as “ITU
channels” to avoid confusing the two.
Chart area Where the data plots, Chart Resize button, and chart zooming control
buttons are located.
Common area The bottom left corner of the Main window where Channel Selection,
Start and Stop Acquisition, and Reference buttons are located.
Configuration area Contains the common area, status area, and tab pages.
Crosstalk A value of Crosstalk describes the levels of the signal attributed to
leakage of optical power into undesired wavelength ranges and
compared to the performance of a DUT within its working region.
Custom or ITU, adjacent and non-adjacent channels with their
passbands, as well as discrete wavelengths (frequencies) can be
used to specify those undesired wavelength ranges.
Dark voltage The signal level obtained when blocking all light to the detector.
Flatness The flatness of the device is a measure of the slope of a straight line
that is a best linear fit to the top of the trace in a given channel.
Flatness is calculated by finding the difference in power between the
two points where the line crosses the band edges. The user defines
whether to use passband, bandwidth, or some other numerical range.
Isolation Defined for a Channel A with respect to a second (physically isolated)
Channel B. It is the insertion loss of Channel A at the nearest guard
band of Channel B.
Marker A crosshair that moves along the channel data up and down in
wavelength.
Marker tab page The tab page where the user selects which markers are to be shown.
Minimum peak The absolute minimum found in the insertion loss trace over the whole
wavelength range.
Mueller matrix The special matrix used to compute PDL.
Pan Moves the image so that the last clicked position is brought to the
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4– Terms
center of the plot. Subsequent pans use the same translation.
Passband The operational region of a filter in spectral space. It is sometimes
defined as the 6-dB bandwidth of a filter.
Process and Display
Options tab page The tab page where the user selects the type of trace to be displayed and the type of smoothing and averaging to be applied.
Reference marker A special marker from which the coordinates of other markers, in
wavelength and power, are measured.
Reference tab page Where the user selects what reference is to be taken (dark voltage,
zero loss, or both) and whether prompts are required after each
channel.
Window resize buttons If a window can be resized, there are three buttons. The left button is
the Minimize button to minimize the window as an icon, the middle
button is the Restore or Maximize button to toggle between the
custom-sized window and the screen-size window, and the right one
is the Close button to close or quit the current configuration window. If
the window cannot be resized, only the Close button is available.
Window title area Contains the name of the saved configuration window. The default is
SWSConfiguration00n, where n = 0 to 255.
Zero loss A reference measurement made with a fiber, against which relative
power measurements are made.
Zoom in Expands an image by reducing the X and Y scales. The center of the
image is unaffected.
Zoom out Reduces an image by increasing the X and Y scales, leaving the
center of the image in the same position.
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Safety –5
Safety Information, Instructions, and Symbols
Safety Information
Classification
The equipment consists of an exposed metal chassis that is connected directly to earth via a
power cord and, therefore, is classified as a Class 1 instrument. Class 1 refers to equipment
relying on ground protection as a means of shock protection.
The following symbol is used to indicate a protective conductor terminal.
Disconnecting from Line Power
Some of the circuits are powered whenever the units are connected to the AC power source
(line power). To ensure that a unit is not connected to the line power, disconnect the power cord
from either the power inlet on the unit’s rear panel or from the AC line-power source (receptacle).
The power cord must always be accessible from one of these points. If a unit is installed in a
cabinet, the operator must be able to disconnect the unit from the line power by the system’s
line-power switch.
Line Power Requirements
The equipment can operate from any single-phase AC power source that supplies between 100
and 240 V at a frequency range of 50 to 60 Hz. The typical maximum power consumption is
1500 W.
Fuse Type
The fuse type for the receiver is T2A/250 V. The fuse type for the source optics module is
T1A/250 V. The fuse type for the tunable laser source is T4AL/250 V.
Laser Specifications
Laser specifications are outlined in Table 1.
Table 1: Laser Specifications
Parameter Specification
Wavelength 1520 to 1570 nm (SWS15101 laser source, C-band)
1540 to 1630 nm (SWS16101 laser source, L-band)
1310 nm (source optics module)
Class I
Output power 6 dBm or 4 mW (SWS15101), 3 dBm or 2 mW (SWS16101), and
-3 dBm or 0.5 mW (SWS15102 or SWS16102)
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