Hirschmann OAS 1501-16 A User manual

OPERATING MANUAL
OAS 1501-16 A
OAS 1501-16 B
OptiCaT 1500 Series
Erbium-Doped Fiber Amplifier
Richard Hirschmann GmbH & Co
Business department
Interactive Broadband Networks
Stuttgarter Strasse 4 - 51
D - 72654 Neckartenzlingen

0 - 2 Operating Manual OptiCaT 1500 Erbium-Doped Fiber Amplifier
Disclaimer
Every attempt has been made to make this material complete, accurate, and up-to-date. Users are
cautioned,however, that Richard Hirschmann GmbH & Co reserves the right to make changes
without notice and shallnot beresponsiblefor any damages, includingconsequential, caused by
reliance onthe materialpresented, including, but not limited to, typographical, arithmetical, or listing
errors.
Copyright Information
© 1997 by Richard HirschmannGmbH & Co
Richard Hirschmann GmbH & Co
Business department
Interactive Broadband Networks
Stuttgarter Strasse 45 - 51
D - 72654 Neckartenzlingen

Operating Manual OptiCaT 1500 Erbium-Doped Fiber Amplifier 0 - 3
1. GENERAL INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 - 1
1.1 Scopeof this Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 - 1
1.2 General Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 - 1
1.3 Physical Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 - 1
1.4 Features and Advantages of the OptiCaT 1500Series . . . . . . . . . . . . . . . . . . . . . 1 - 2
1.5 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 - 2
1.6 Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 - 3
1.7 Optical Receptacle Careand Handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 - 4
1.8 Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 - 4
1.9 If You NeedHelp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 - 5
1.10Safety Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 - 5
1.11 Electrostatic Sensitivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 - 5
2. INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 - 1
2.1 Examine the Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 - 1
2.2 Preparingthe Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 - 1
2.2.1 Environmental Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 - 1
2.2.2 Equipment MountingRequirement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 - 2
2.2.3 PowerRequirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 - 2
2.3 Install the Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 - 2
2.4 MakeElectrical Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 - 2
2.5 MakeOptical Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 - 3
2.6 MakeCommunications Connections (Optional) . . . . . . . . . . . . . . . . . . . . . . . . . . 2 - 3
3. OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 - 1
3.1 Front PanelControls and Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 - 1
3.2 RearPanelConnections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 - 2
3.3 Startup and Normal Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 - 2
3.4 Output Power Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 - 3
4. TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 - 1
4.1 WarningConditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 - 1
4.2 AlarmConditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 - 1
5. THEORYAND BLOCKDIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 - 1
6. MODEL SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 - 1

Operating Manual OptiCaT 1500 Erbium-Doped Fiber Amplifier 1 - 1
1. GENERAL INFO RMATIO N
1.1 Scope of this Manual
This document describes the form, fit, and function of the OptiCaT 1500 Series
Erbium-Doped Fiber Amplifier (EDFA) and all acceptable standard options.
•Installing the unit
•Operating the unit
•Settingup the unit to suit individual needs
•Troubleshooting
•Theory of operation
•Repair Policy
1.2 General Description
The OptiCaT 1500 EDFA is an optical amplifier operating in the 1550 nm
wavelength region. These units are intended to function as either a booster or line
amplifier depending on the model.
980nm diode lasers are used to pump Erbium doped fiber to provide optical
amplification. Depending on model, optical isolators are used at both the input and
output of the amplifier. Tap couplers allow the measurement of the optical input
and output powers.
The unit can be powered from AC, DC, or conditioned external DC supplies,
configured as main or backup, depending on which powering option is ordered.
1.3 Physical Description
Figure 1-1 is an illustration of the OptiCaT 1500 EDFA, showing unit
measurements. The Optical Amplifier is a rack mounted 1U unit.
Height 1.75" (44 mm), 1U
Width 19" (483 mm)
Depth 20" chassis (508 mm), 21" (533 mm) with fans
Weight 20 lbs (9 kgs) max.

1 - 2 Operating Manual OptiCaT 1500 Erbium-Doped Fiber Amplifier
Figure 1-1 OptiCaT 1500 EDFA Unit
1.4 Features and Advantages of the 9100Series
•Models available with a wide range of optical output power.
•Low Noise Figure.
•User adjustable output power.
•Front panel display of status and configuration of the Optical Amplifier.
•LED status indicator.
•Remote status monitoringfunction via RS485 Interface.
•Wide range of electrical power options available.
•High reliability and a 1-year warranty.
1.5 Specifications
Specifications for the specific OptiCaT 1500 Series model ordered are listed in
section 6. MODELSPECIFICATIONS.

Operating Manual OptiCaT 1500 Erbium-Doped Fiber Amplifier 1 - 3
1.6 Functional Description
Front Panel:
On/Off Key Activate/De-activate optical gain
LED indicator Indicates status of unit (Normal, Warning, or Alarm)
Display Alphanumeric Dot Matrix LED, 1 line provides
status and configuration information.
Scroll buttons up/down/select push buttons are used to select menu
items for display and to vary user adjustable
parameters.
Rear Panel:
Power entry module On/Off switch with standard 3-pin IEC AC (with
AC option) power socket with integrated fuse holder
Terminal Block 4 post for DC power inputs
Ground Stud
Communication port Dual RJ-11 jacks for use with RS-485 protocol.
Status monitoring with compatible Network
Management Software
Optical connectors fiber input/output
options: FC/APC, SC/APC, E-2000 bulkhead
connectors
FC/APC SC/APC E-2000
Figure 1-2 Optical Connectors Compatible with OpitCaT 1500 EDFA
1.7 Optical Connector Care and Handling
All optical connectors are shippedwith end caps for protection and safety.Do not
remove the end caps untilinstallation.
The optical connector’s surface is highly polished and free of foreign materials to
ensure low loss couplingand back reflection.Do not allow the optical connectors to
become dirty. Small traces of dirt will degrade transmission quality. Ensure that the
caps are on theoptical connectors at all times.
It is absolutely criticalthat fiber optic connectors be cleaned each and every time
before connectingor reconnectingto anything.

1 - 4 Operating Manual OptiCaT 1500 Erbium-Doped Fiber Amplifier
Without proper maintenance practices, fiber optic systems will fail to function
properly. Theseperformance degradation’s take many forms:
•Pooranalogtransmissionquality
•Digital bit error rates increase
•Reduced opticalpower
•Receiver input power outside optimum operating range
•Dirty connectors may cause damage to their mated counterparts
It is recommended that RIFOCS Corporation 945/946 fiberoptic connector cleaning
system be usedfor cleaningthe optical connectors.
1.8 Service
High power lasers are contained within this unit. Dangerous AC voltages may be
present.
Do not attempt to modify or service any part of the system. If the systemdoes not
meet its warranted specifications,or if a problem is encounteredthat requires service,
return the apparently faulty assembly to Hirschmann for evaluation in accordance
withHirschmann 's warranty policy.
Whenreturningan assembly for service, include the following information: Owner,
ModelNumber, Serial Number, ReturnAuthorization Number (obtained in advance
fromHirschmann Corporation'sCustomer Service Department),service required
and/or a description of the problemencountered.
1.9 If You NeedHelp
If you need additional help in installing or usingthe system, need additional copies of
this manual, or have questions about system options, please call Hirschmann´s
Service Center at +49 / 7127 / 14-1301.
1.10 Safety Considerations
When installingor usingthis product, observe all safety precautions during handling
and operation.Failure to comply with the followinggeneralsafety precautions and
with specific precautions described elsewherein this manual violates the safety
standards of the design,manufacture, and intended useof this product. Hirschmann
GmbH & Co assumes no liability for the customer's failure to comply with these
precautions.

Operating Manual OptiCaT 1500 Erbium-Doped Fiber Amplifier 1 - 5
Calls attention to a procedure or practice which, if ignored, may result in damage to
the system or system component. Do not perform any procedure preceded by a
CAUTION untildescribed conditions are fully understood and met.
1.11 Electrostatic Sensitivity
Observe electrostatic precautionary procedures. (ESD = ElectroStatic Discharge)
TheOptiCaT 1500amplifier provides highly reliableperformance when operated in
conformity withits intended design. However,it may bedamaged by an electrostatic
charge inadvertently imposed by careless handling.
Static electricity can beconductedto the amplifier through therear panelconnectors.
When unpackingand otherwise handling the amplifier, follow ESD precautionary
procedures includinguseof grounded wrist straps, grounded workbench surfaces,
and grounded floor mats.
Exposure to electrostaticcharge is greatly reduced after the amplifier chassis is
grounded.

Operating Manual OptiCaT 1500 Erbium-Doped Fiber Amplifier 2 - 1
2. INS TALLATION
To install theequipment, perform the following steps, each of which is described in detail in
the rest of this section.
•Step 1. Examine the equipment forloss or damage that may haveoccurred during
shipping.
•Step 2. Prepare the operating environment.
•Step 3. Install the OptiCaT 1500EDFA
•Step 4. Makeelectricalconnections
•Step 5. MakeRF connections
•Step 6. Makeoptical connections
2.1 Examine the Equipment
•Carefully unpack the equipment. Besure to check the packing material for small
parts
•Check the contents of package against the following list:
Package Contents
•OptiCaT 1500EDFA
•Operation Manual
•Factory test data
•AC power cord (If AC option selected)
•If any of the equipment is missingor damaged, please notify Hirschmann
Corporation immediately.
2.2 Preparing the Equipment
2.2.1 Environmental Requirements
TheOptiCaT 1500EDFA has been designed to operate over atemperature
rangeof 0oC to50oC. Hirschmann GmbH & Co recommends operatingit at
an ambient temperature of 25oC (77oF).
The humidity should be kept below 95% non-condensing. If necessary,
equipment should be installed to maintain thetemperature and humidity
within these limits.
Hirschmann GmbH & Co alsorecommends a low dust environment.

2 - 2 Operating Manual OptiCaT 1500 Erbium-Doped Fiber Amplifier
2.2.2 Equipment Mounting Requirement
TheOptiCaT 1500EDFA is 1 unit highand is designed tofit EIA standard
19 inch equipment cabinets. Hirschmann GmbH & Co recommends 1.75inch
spaceabove andbelow theunit.
2.2.3 Power Requirements
Depending on the option purchased, the unit can be powered from AC,
unregulated DC, or regulated external DC. If AC power is present, it will be
the main supply. The DC inputs can be configured as a backup or as the
main supply (if AC is not present).
Power Requirements are:
AC input 90- 264 VAC, 50-440 Hz
DC input 21-60 VDC, floating
external DC input +24 VDC +/-0.5V
Noise and ripple less than
100 mV-pp above 100 kHz, less than 20 mVpp
below 100 kHz
Power Consumption: 40 W max.
2.3 Install the Equipment
Mount the OptiCaT 1500EDFA in the equipment cabinet in the desiredlocation.
2.4 Make Electrical Connections
When AC power is present, it will be the main supply. The
DC inputs can be configured as a backup or as the main
supply (if AC is not present) depending on the powering
option ordered.
The four available powering options of the unit are as follows:
•AC only AC input and 24V conditioned input only
•DC only DC input and 24V conditioned input only
•AC and DC AC input, DC input, and 24V conditioned input
•24V conditioned only 24V conditioned input only

Operating Manual OptiCaT 1500 Erbium-Doped Fiber Amplifier 2 - 3
Note:Make heavy gauge wire connection between ground stud and chassis ground
before makingelectricalconnections.
21 -60 V DC input RegulatedInput
+24 V Gnd
Figure 2-1 DCPower Connections
2.5 MakeOptical Connections
Ensure optical input signal is present.
Makesure all connectors are clean before installing. Connect the input and output
fiber cables to the appropriate connectors on the rear of the unit. Optical connector
options are: FC/APC, E -2000, SC/APC with eitherpigtails or bulkhead connectors.
2.6 Make CommunicationsConnections (Optional)
Status monitoringis available withcompatible RS-485 Network Management
System throughdual RJ-11phone Jacks.

Operating Manual OptiCaT 1500 Erbium-Doped Fiber Amplifier 3 - 1
3. OPERATION
The user front panel interface consists of a 16 character segmented LED display, a status
indicating LED, and 3 push buttons. The status indicating LED indicates whether the
conditions are normal, or whether a warning or alarm is active. The LED lights green,
amber, or red, respectively to indicate these conditions.
The three push buttons are marked with an up arrow (up), a down arrow (down), or
“select” (select, or enter). These buttons are used to navigate a menu (figure 3-3) that
displays system information on the 16 character display. During normal operation, and
when no buttons have been pressed, the display reads “Optical amplifier” When a warning
or alarm condition is present, the display shows a description of the problem (table 3-1).
3.1 Front Panel Controls and Indicators
Key switch Optical gain section enable/disable switch - (key not
removable in on position)
Status LED Tricolor (green, yellow, red)
GREEN - indicates normal operation
AMBER - indicates a warningcondition
RED - indicates an alarm condition
Display Alphanumeric Dot Matrix LED - List of messages
shown in Table 3-1.
Scroll buttons up/down/select push buttons - Menu structure
shown in Figure 3-1
Figure 3-1. EDFA Front Panel

3 - 2 Operating Manual OptiCaT 1500 Erbium-Doped Fiber Amplifier
3.2 Rear Panel Connections
Power entry module On/Off switch with standard
(If AC ordered) 3-pin IEC AC power socket integrated fuse holder
Make sure the Key switch on the front panel is in
the “Off” position before turning the power on
switch to the “On” position.
Optical connectors fiber input/output
options: FC/APC, E-2000, SC/APC
Fan dual with shields
Terminal Block 4 post for DC power inputs
Ground Stud
Communication port dual RS-485 phone jacks
Communications: Status monitoring with compatible Network
Management Software
INVISIBLE LAS ER RADIATION
AVO ID DIRECT E XPOSURE TO BEAM
PEAK POWER 200 mW
WAVELENGTH 15 50 n m
CLASS IIIb LASER PRODUCT
THIS PRODUCT COM PLIES WITH 21 C F
R
CHA PTER I SU BCHAPTER J
DAN GER
Figure 3-2. EDFA Rear Panel
3.3 Startup and Normal Operation
With the Laser key in the “Off” position, turn on the rear panel electrical power.
When the EDFA is first powered up, it will go through a series of power-on self-
tests. During the self-test period, the push buttons are disabled, the display flashes
“Start-up,” and the LED is set to amber.
With the key in the “Off” position, the optical gain will be disabled and the input
optical signal will be throughput without any amplification or degradation.
To enable the optical gain section, turn the key switch to the “On” position. The
LED will switch to green and “1550 EDFA” will be displayed. If the EDFA does

Operating Manual OptiCaT 1500 Erbium-Doped Fiber Amplifier 3 - 3
not pass its self-test because of a warning or an alarm condition, then the EDFA
changes the LED and display as described in table 4-1 in Section 4
Troubleshooting.
During normal operation, the EDFA displays “1550 EDFA.” When the “select”
button is pressed, the display changes to show system information according to the
menu structure of Fig. 3-1. By repeatedly pressing “select,” the display cycles
through the menu headings “Optical,” “Pump 1,” “Pump 2,” on up to “Pump 4 if
installed,” and “System.”
In EDFA’s where fewer pumps are installed, the menu headings for those lasers
not installed are eliminated. The down button moves the display down in the menu
structure; if the bottom of the menu is reached, the display wraps back to the top.
For instance, if “Pump 1” is shown and the down button is pressed, then the
display shows the pump 1 laser bias current. The up button moves the display up
the menu structure.
3.4 Output Power Adjustment
To adjust the output power repeatedly press the “select” button until the
“Optical” menu heading appears in the display. Press the down button until the
display reads “Pwr Adj = xx.xdBm.” Press the “select” button and the display will
start to flash. Use the up and down button to adjust the power to the desired
setting. Press the select button again to save the adjustment.
Press the down button again, and the display will read “Update Adj. = Y/N.”
Press the select button and the display will start to flash. Use the up/down buttons
to select “Y” or “N.” Press the select button again to save your choice. If “Y” is
chosen, the adjusted power setting will automatically come up each time the unit is
turned on. If “N” is chosen, the power setting will change back to the previously
updated value when power to the unit is cycled.

3 - 4 Operating Manual OptiCaT 1500 Erbium-Doped Fiber Amplifier
Figure 3-3. The Display Menu Structure
Heading Item Description
Optical Pin=xx.xdBm shows the optical power into the EDFA
Pout=xx.xdBm shows the optical power out of the EDFA
Pwr Adj = xx.xdBm shows the adjusted optical power out of the EDFA
Update Adj = Y/N saves adjusted power setting to non-volatile memory
Pump 1 I bias 1=xxxmA shows the bias current to pump laser 1
I TEC 1=x.xxA shows the TEC current for pump laser 1
Temp 1=xxC shows the temperature of pump laser 1
Pump 2 I bias 2=xxxmA shows the bias current to pump laser 2
I TEC 2=x.xxA shows the TEC current for pump laser 2
Temp 2=xxC shows the temperature of pump laser 2
Pump 3 I bias 3=xxxmA shows the bias current to pump laser 3
I TEC 3=x.xxA shows the TEC current for pump laser 3
Temp 3=xxC shows the temperature of pump laser 3
Pump 4 I bias 4=xxxmA shows the bias current to pump laser 4
I TEC 4=x.xxA shows the TEC current for pump laser 4
Temp 4=xxC shows the temperature of pump laser 4
System SN = xxx serial number of the transmitter
Address=xxxxx network address of the transmitter
Table 3-1. List of Display Messages and Meaning
1550 EDFA
P in = xx.xdBm
P out = xx.xdBm
Pwr Adj = xx.xdBm
Update Adj = Y/N
I bias 1 = xxxmA
Optical
I TEC 1 = x.xxA
Temp 1 = xxC
I bias 2 = xxxmA
Temp 2 = xxC
I TEC 2 = x.xxA
SN = xxxx
Address = xxxxx
Pump 1 Pump 2 System

Operating Manual OptiCaT 1500 Erbium-Doped Fiber Amplifier 4 - 1
4. TROUBLES HOOTING
There are two types of faults - warnings and alarms. Warnings are conditions that
indicate problems, but do not necessarily result in a total loss of service. Alarms are
conditions that indicate a total loss of service. Based on the condition of the alarm or
warning, different indicators will be affected. These are described below.
4.1 Warning Conditions
When the EDFA is in the warning condition, the status LED will change to amber,
and a brief description of the condition is listed on the display. Warnings generally
do not halt operation of the unit, but correspond to a parameter that is slightly out
of range. If the warning condition ceases, i.e. , the relevant parameter goes back into
its allowable range, the display and LED will return to their normal state without
user intervention.
4.2 Alarm Conditions
Alarms generally halt operation of the EDFA. They correspond to either a
parameter that is far out of the acceptable range, or to a condition that could
potentially cause damage to the EDFA. If the alarm persists after cycling power or
toggling the keyswitch, then the alarm is activated again.
Table 4-1 defines the different warning and alarm conditions, the display readout,
and how the conditions are cleared. Some critical alarms, such as “Alarm: self test,”
can only be cleared by cycling power to the EDFA. Other alarms are cleared when
the keyswitch is toggled off and then on again or are self clearing if the relevant
parameter returns to a normal range. With warnings, the EDFA will simply
continue to function while indicating the warning, or the warning will clear itself if
the relevant parameter returns to a normal range.

4 - 2 Operating Manual OptiCaT 1500 Erbium-Doped Fiber Amplifier
Note: When the keyswitch is in the “off” position, the LED is amber and the display
reads “Stand By” to indicate the standby mode
EDFA Condition Dis
p
la
y
Readout LED Color Description
Power on/key on 1550 EDFA Green normal operation
Warning
Power on/key off Standby Amber standby until keyswitch
turned on
Initialization Start Up Amber key and buttons
disabled
during start up
Ibias high Warn: Ibias Y hi Amber Ibias is near the
maximum rating for
laser; laser may be
degrading
Laser temperature low Warn: pump Y
cold Amber pump laser temperature low
Laser temperature hi Warn:
p
um
p
Y hot Amber pump laser temperature
high
Input optical power low,
key on Warn: input low Amber low 1550nm input power,
still operate amplifier
Alarm
Failed self test Alarm:self test Red cycle power to clear
ITEC>ITEC_max Alarm: TEC Y Red pump TEC failure,
cycle power to clear
Ibias>Ibias_max Alarm: Ibias Y Red pump bias failure,
key switch reset
Input optical power off,
key on Alarm: no input Red disable optical gain section,
self clear if optical
power on
Optical output power low Alarm: out
p
ut low Red low output power,
toggle keyswitch to
clear
Table 4-1. Warnings and Alarms
(Shows display and LED indications and what the system does in response.)
If any problems are encountered which cannot be corrected, please contact Hirschmann
Corporation at +49 / 7127 / 14-1301

Operating Manual OptiCaT 1500 Erbium-Doped Fiber Amplifier 5 - 1
5. THEORY AND BLOCK DIAGRAM
The OptiCaT 1500 EDFA block diagram is shown in Fig 5-1. Depending on model,
isolators are used at both the input and output to prevent optical reflections from feeding
back into the amplifier which can degrade performance. Tap couplers at both the input and
output are used to monitor the power of the incoming and amplified output signal.
Gain occurs in a section of Erbium doped fiber which is “pumped” by light from 980 nm
lasers. The erbium ions absorb the 980nm pump light and re-emit light which is in phase
and at the same wavelength as the input signal. The amount of gain is dependent on both
the incoming signal power and the pump power.
Input Output
Input
Isolator
Input
Tap Output
Isolator
Erbium
Gain
Output
Tap
Photodiode Photodiode
980nm Pump
Laser(s)
Note: Isolators may or may not be present.
Figure 5-1. OptiCaT 1500 Amplifier Block Diagram

Operating Manual OptiCaT 1500 Erbium-Doped Fiber Amplifier 6 - 1
6. MODELSPECIFICATIONS
Parameter OAS 1501-16 A OAS 1511-16 B
Output Power 16 dBm 16 dBm
Noise Figure (max) 1) 5.5 dB 5.0 dB
Operating Wavelength 1540 - 1560 nm
Polarization Sensitivity <0.2 dB
Input Optical Return Loss >50 dB No spec
Output Optical Return
Loss >50 dB
Operating Temperature 0 - 50 C
Power Consumption (max) 40 W
1) : At 6 dBm input power
Table 6-1. Performance Specifications