JGR TLS User manual

TLS Tunable Laser Source
User Manual
All information contained herein is believed to be accurate and is subject to
change without notice. No responsibility is assumed for its use.
JGR Optics Inc, 2015.

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TABLE OF CONTENTS
COMPLIANCE ............................................................................................................1
FDA-CDRH COMPLIANCE .....................................................................................................1
CSA /IEC COMPLIANCE........................................................................................................1
COMPLIANCE .........................................................................................................................1
GENERAL INFORMATION ......................................................................................2
TLS TUNABLE LASER SOURCE OVERVIEW ..............................................................................2
OUTPUT PORT.......................................................................................................................3
KEY FEATURES ......................................................................................................................3
APPLICATIONS.......................................................................................................................3
ACCESSORIES........................................................................................................................3
SAFETY INFORMATION ..........................................................................................4
SAFETY MARKINGS ON THE UNIT ...........................................................................................4
CLASSIFICATION....................................................................................................................5
LASER SPECIFICATIONS .........................................................................................................5
IMPORTANT SAFETY INFORMATION ........................................................................................5
Laser Hazards ...........................................................................................................5
Electrical Shock Hazards .........................................................................................6
GETTING STARTED ..................................................................................................7
INITIAL INSPECTION..............................................................................................................7
OPERATIONAL REQUIREMENTS...............................................................................................8
PRODUCT OVERVIEW.............................................................................................................9
Front Panel and Key Description ............................................................................9
Rear Panel .................................................................................................................9
OPERATION .............................................................................................................11
POWERING UP THE TUNABLE LASER SOURCE........................................................................11
MANUAL TUNING.................................................................................................................11
SWEEP MODE......................................................................................................................12
USER MENU OPERATION......................................................................................................13
Accessing the User Menu ......................................................................................13
User Menu Options ................................................................................................13
MESSAGES AND SYMBOLS ....................................................................................................14
CALIBRATION ......................................................................................................................14
Calibration Period ...................................................................................................15
PROGRAMMING GUIDE........................................................................................16
SETTING UP FOR RS-232, USB OR GPIB COMMUNICATION .................................................16
Accessing the “User Menu” mode ........................................................................16
Programming over GPIB .......................................................................................16
Programming Over RS-232 ...................................................................................16
Programming Over USB ........................................................................................17
MAINTENANCE AND TROUBLESHOOTING ......................................................18
MAINTENANCE.....................................................................................................................18

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Cleaning the Unit ................................................................................................... 18
Cleaning the Connector Ends .............................................................................. 18
Cleaning Jumper Connectors ............................................................................... 19
TROUBLESHOOTING ............................................................................................................ 20
Connector Issues ................................................................................................... 20
Other potential Issues .......................................................................................... 20
STORAGE AND SHIPPING ................................................................................... 22
RETURNING INSTRUMENTS TO JGR OPTICS......................................................................... 22
CONTACT INFORMATION ..................................................................................................... 23
SPECIFICATIONS .................................................................................................. 24
REMOTE CONTROL COMMANDS ........................................................................ 25
COMMAND SYNTAX AND STYLE............................................................................................ 25
Program Message Formats .................................................................................. 25
Terminating a Program Message ........................................................................ 25
Command Header Variations ............................................................................... 25
Specifying the Command Path ............................................................................ 26
Default Commands ................................................................................................ 26
Implemented Status Structures .......................................................................... 27
QUEUES ............................................................................................................................. 29
Input Queue ........................................................................................................... 29
Output Queue ........................................................................................................ 30
Error Queue ............................................................................................................ 30
DESCRIPTION OF ERROR NUMBERS ..................................................................................... 30
IEEE 488.2 COMMON COMMANDS AND THE SCPI COMMAND TREE..................................... 32
IEEE 488.2 Common Commands ........................................................................ 32
SCPI Command Tree ............................................................................................. 33
DESCRIPTION OF INDIVIDUAL COMMANDS ........................................................................... 35
IEEE-488.2 Common Commands ........................................................................ 35
SCPI Commands .................................................................................................... 39

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COMPLIANCE
FDA-CDRH Compliance
Under the US Food and Drug Administration (FDA) Center for Devices and
Radiological Health (CDRH), the unit complies with the Code of Federal
Regulations (CFR), Title 21, Subchapter J, which pertains to laser safety and
labeling. See the link below for more information.
http://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfcfr/CFRSearch.cfm?CF
RPartFrom=1000&CFRPartTo=1050
CSA / IEC Compliance
The unit complies with certain standards of the Canadian Standards Association
(CSA) and the International Electrotechnical Commission (IEC).
The unit falls in the Installation Category (Overvoltage Category) II under IEC 664.
IEC 664 relates to impulse voltage levels and insulation coordination. The
particular category is defined as: local level, appliances, portable equipment, etc,
with smaller transient overvoltages than Installation Category (Overvoltage
Category) III.
The unit falls in the Pollution Degree 2 category under IEC 1010-1 and CAN/CSA-
C22.2 No. 1010.1. The IEC standard on Safety Requirements for Electrical
Equipment for Measurement, Control, and Laboratory Use relates to insulation
coordination. The CSA standard is on Safety Requirements for Electrical
Equipment for Measurement Control, and Laboratory Use, Part I: General
Requirements. The Pollution Degree 2 category is defined as follows: “Normally
only non-conductive pollution occurs. Occasionally, however, a temporary
conductivity caused by condensation must be expected.”
Compliance
Electronic test equipment is subject to the EMC Directive in the European
Union. The EN61326 standard prescribes both emission and immunity
requirements for laboratory, measurement, and control equipment. This unit
has undergone extensive testing according to the European Union Directive and
Standards.

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GENERAL INFORMATION
TLS Tunable Laser Source Overview
The TLS is a Tunable Laser Source that offers an ultra-wide continuous
wavelength range of 1260 to 1630 nm, all in one bench-top chassis.
Figure 1: TLS Tunable Laser Source
The TLS enables customers to span the entire CWDM spectral range at a
relatively low cost, enabling affordable testing of CWDM as well as broadband
optical components. To accomplish such wide wavelength coverage, the TLS
uses several optical amplifiers and an external cavity. The output wavelength of
each amplifier is aligned within the cavity to achieve seamless and continuous
wavelength coverage at the unit’s output.
The output spectrum features low coherence length, an accuracy of 0.2nm,
stability of 0.1nm, and high repeatability of better than 0.1nm. The source also
offers a very good side mode suppression ratio of over 60dB. The tuning speed
of the TLS is over 100nm/s allowing users to access their desired wavelength
quickly and efficiently.
The TLS offers a user friendly LED display that can be controlled manually with
the use of the front panel buttons, but also offers the possibility of remote
control through GPIB and RS232.

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Output Port
The output port of the TLS tunable laser source is equipped with an ultra-low
backreflection APC connector.
Key Features
Ultra wide 1260 nm to 1630 nm continuous wavelength coverage
Tuning resolution of 0.1 nm
Side mode suppression ratio of 60 dB at 0.1 nm resolution bandwidth
Tuning speed of over 100 nm / second
RS-232 serial and IEEE 488 GPIB parallel interfaces
Applications
CWDM and PON component testing
General lab instrument
Accessories
AC power cord
User Manual
NIST traceable Calibration Certificate
Extreme care must be taken to avoid damaging the connector when
plugging and unplugging output jumper. Connection must be kept
clean and should be inspected before every mating. Please refer to
the Cleaning Connectors section on page 19 for more information.

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SAFETY INFORMATION
To avoid situations that could result in serious injuries or death, always observe
the following precautions.
The safety instructions must be observed whenever the unit is operated,
serviced, or repaired. Failure to comply with any of these instructions or with
any precaution or warning contained in the User Manual is in direct violation of
the standards of design, manufacturing, and intended use of the unit. JGR
Optics assumes no liability for the customer’s failure to comply with any of
these safety requirements.
Safety Markings on the Unit
The following symbols and messages can be marked on the unit (see Table 1
below). Observe all safety instructions that are associated with a symbol.
Table 1: Safety Symbols
Laser radiation may be present. Refer to the User Manual for
instructions on handling and operating the unit safely. Avoid
looking into any ports near which this symbol appears.
Frame or chassis terminal for electrical grounding within the
unit.
Protective conductor terminal for electrical grounding to the
earth.
WARNING
Procedure can result in serious injury or loss of life if not
carried out in proper compliance with all safety instructions.
Ensure that all conditions necessary for safe handling and
operation are met before proceeding.
CAUTION
Procedure can result in serious damage to or destruction of the
unit if not carried out in compliance with all instructions for
proper use. Ensure that all conditions necessary for safe
handling and operation are met before proceeding.

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Classification
The TLS Tunable Laser Source 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.
Laser Specifications
The laser contained in the TLS source is Class 1 laser as specified under the laser
classification of the US Food and Drug Administration (FDA) Center for Devices
and Radiological Health (CDRH). Laser specifications are provided in Table 2
below.
Table 2: Specifications
Parameter
Single-mode (SM)
Wavelength
1260 to 1630 nm
Class
1
Fiber Type
9/125 µm SM
Maximum Accessible
Emission Level
-15 dBm
Maximum Output
Power
-1 dBm
Numerical Aperture
0.13
Effective Numerical
Aperture
0.20
Important Safety Information
Laser Hazards
Warning
Never look into the end of an optical cable connected to an
optical output device that is operating. Laser radiation is
invisible, and direct exposure can severely injure the human
eye.
CLASS 1
LASER PRODUCT

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Electrical Shock Hazards
Warning
Some of the circuits are powered whenever the unit is
connected to the AC power source (line power). To ensure
that all circuits are powered off, 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 the
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.
Use only the type of power cord supplied with the unit. If
you need to replace a lost or damaged cord, make sure to
replace with a power cord of the same type.
Connect the power cord only to a power outlet equipped
with a protective earth contact. Never connect to an
extension cord or any receptacle that is not equipped with
this feature.
If using a voltage-reducing autotransformer to power the
unit, ensure that the common terminal connects to the
earthed pole of the power source.
Do not interrupt the protective earth grounding. Such
action can lead to a potential shock hazard that can result in
serious personal injury. Do not operate the unit if an
interruption to the protective grounding is suspected.
Do not operate the unit when its cover or panels have been
removed.
To prevent potential fire or shock hazard, do not expose the
unit to any source of excessive moisture.
Do not use the unit outdoor.
Operating the unit in the presence of flammable gases or
fumes is extremely hazardous.
If the equipment is used in a manner not specified by the
manufacturer, the protection provided by the equipment
may be impaired. Only technicians authorized by JGR
Optics should carry out the repairs. In addition to voiding
the warranty, opening the unit (even when unplugged) can
expose you to potential shock hazards.
Some of the unit’s capacitors can be charged even when the
unit is not connected to the power source.
Do not perform any operating or maintenance procedure
that is not described in the User Manual.