Optical Amplifier Platform, 1724-Type
Erbium-Doped Fiber Amplifier (W Series)
Applications
■
Designed specifically for DWDM applications
■
Booster/power amplifier
■
Line amplifier
Description
The W1724-Type Erbium-Doped Fiber Amplifier
(EDF A) has been designed for use in DWDM applications and offers the following performance features:
Data Sheet, Rev. 1
September 2001
Designed for use in DWDM applications, the standard
W1724-Type EDFA incorporates a DB-25 connector and a
microcontroller with TTL compatible alarm monitoring.
Features
■
Gain-flattened spectral response
■
High saturation output power, > 22 dBm
■
Low power consumption, < 12 W @ 45 °C
■
Low noise
■
Single 5 V operation
■
Wide input signal bandwidth
■
Wide operating temperature range, 0 °C to 65 °C
■
Optical input and output taps
■
Isolated input and output
■
Programmable input and output monitors
■
Flat gain profile over a wide temperature range
■
Low noise figure
■
High output power
■
Automatic gain lock
The versatile W1724-Type EDFA operates over a
wide temperature range, exhibits extremely low
power dissipation, and offers a variety of alarms and
monitors. Optimum performance and system stability
are supported through the use of optical isolation at
the input and output. Optical input and output are
through single-mode fiber pigtails terminated with
optical connectors.
The EDFA incorporates optical input and output taps
that are monitored via an integral microcontroller.
Significant performance benefits are achieved with
the microcontroller, which stabilizes the temperature
of the pumps and maintains constant gain of the
amplifier.
Contact your Account Manager at Agere Systems
Inc. to discuss electrical or optical connector options
not listed in the Ordering Information section.
■
Connectorized single-mode fiber pigtail
■
Standard serial communication channels
Data Sheet, Rev. 1Optical Amplifier Platform, 1724-Type
September 2001Erbium-Doped Fiber Amplifier (W Series)
Standard Features
The standard W1724-Type EDFA incorporates the optical architecture illustrated in Figure 1. The standard
features include:
■
Exceptional performance benefits with the integral
microcontroller, which precisely controls the gain to
maintain a flat spectral response over various input
powers.
■
Single 5 V power supply eliminates the need for dual
voltage source circuits.
■
DB-25 electrical connector allows for easy electrical
connectivity.
■
Optical input tap enables input monitoring and control.
■
SC/PC optical connector.
■
Low power dissipation.
■
Alarms:
— Loss of input power alarm.
— Loss of output power alarm.
— Pump bias alarm (>95% of EOL value).
— Pump temperature alarm (T
— EDFA temperature alarm (T
■
Advanced microprocessor design requires minimal
engineering for a shelf-level product.
■
Standard mechanical outline includes metric screws
and fiber outputs (using SC/PC optical connectors)
at 180 degrees relative to a DB25 electrical connector. The standard product does not include a heat
sink.
L
> 35 °C).
C
> 60 °C).
TTL-Compatible Alarm Outputs
Loss of Input Power Alarm
If the input power is more than 2 dBm below the minimum P
activate (TTL-logic 1).
Loss of Output Power Alar m
If the output power decreases by more than 2 dB from
its beginning-of-life value, the loss of output power
alarm (pin 8) will activate (TTL-logic 1).
Pumps Temperature Alarm
If the laser temperature for the pump(s) exceeds 35 °C,
the pump temperature alarm (pin 10) will activate (TTLlogic 1).
Pumps Bias Alarm
If the bias current for the pump(s) exceeds 95% of its
EOL value, the pump bias alarm (pin 9) will activate
(TTL-logic 1).
EDFA Tempera ture Alarm
If the case temperature exceeds 60 °C, then the
EDFA temperature alarm (pin 7) will activate (TTLlogic 1).
, the loss of input power alarm (pin 19) will
IN
Optional Features
Other feature and package options for the W1724-Type
EDFA include:
Table 1. Pin Descriptions for a Microcontrolled (Full) Amplifier
PinDescriptionPinDescription
15.0 V (±0.25 V)14GND
25.0 V (±0.25 V)15GND
35.0 V (±0.25 V)16GND
45.0 V (±0.25 V)17GND
5Reserved
6Reserved
7EDFA Temperature Alarm20Reserved
8Loss of Output Power Alarm
9Pumps Bias Alarm
10Pumps Temperature Alarm
11EDFA Shutdown Override
125.0 V (±0.25 V)25GND
13GND——
1.Do not connect to reser ved pins.
2.Normal = TTL low, alarm = TTL high if the output power falls 2 dB below the minimum value.
3.Normal = TTL low, alarm = TTL high if pump bias exceeds 95% of its end-of-life value.
4.Normal = TTL low, alarm = TTL high if pump temperature exceeds 35 °C.
5.The EDFA is equipped with an optical transient suppression feature when this pin is tied to GND. The EDFA will turn all pumps off, if the
input power is too low. Tying this pin to 5 V will disable this feature; however, damage to the optical connectors and components may occur if
the amplifier is turned on without the presence of an optical signal.
6. Normal = TTL low, alarm = TTL high if input power is less than 2 dB below minimum P
Amplifier enable (all pumps are on) = TTL low, amplifier disable (all pumps are off) = TTL high.
7.
1
1
2
3
4
5
18RS-232 OUT (TTL)
19Loss of Input Power Alarm
1
21Amplifier Disable Input
7
22RS-232 IN (TTL)
23Reserved
1
245.0 V (±0.25 V)
IN
.
6
Agere Systems Inc.
3
Data Sheet, Rev. 1Optical Amplifier Platform, 1724-Type
September 2001Erbium-Doped Fiber Amplifier (W Series)
Absolute Maximum Ratings
Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are absolute stress ratings only. Functional operation of the device is not implied at these or any other conditions in excess
of those given in the operational sections of the data sheet. Exposure to absolute maximum ratings for extended
periods can adversely affect device reliability.
ParameterSymbolMinTypMaxUnit
Storage TemperatureT
Operating Case TemperatureT
stg
C
Absolute Humidity———0.024lbs. H
–402070°C
03565°C
2
O/lbs. dry air
Electrical Characteristics
Table 2. Power Supply
ParameterSymbolMinTyp
dc Power Supply VoltageV
Power Supply Current
I
PS1
PS1
*
4.755.05.25V
—1.0— A
MaxUnit
(beginning of life)
Power Supply Current
I
PS1
——1.9A
(end of life)
Electrical Power Consumption
——5.0—W
(beginning of life)
Electrical Power Consumption
———10.0W
(end of life)
* Typical operating characteristics: V
PS1
= 5.0 V, TC = 35 °C.
Table 3. TTL Inputs/Outputs
Under normal operating conditions, the various alarm outputs will be TTL level low. If the corresponding parameter
is outside a predesignated range, the associated alarms will become TTL level high.
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Laser Safety Information
FDA/CDRH Class IIIb and
®
IEC
60825 Class 3B laser product.
All versions of the product are FDA/CDRH Class IIIb laser products. The product complies with the U.S. Code of
Federal Regulations (CFR), Title 21, Part 1040.10 and 1040.11 laser product regulations.The product is registered/
certified with the FDA under accession number 9320325.
CAUTION: Use of controls, adjustments, and procedures other than those specified herein may result in
hazardous laser radiation exposure.
DANGER
DANGER
INVISIBLE LASER RADIATION
AVOID DIRECT EXPOSURE TO BEAM
Max. Output: 500 mW,
Wavelen
th: 1.5 µm
Class IIIb La s e r Pro d uct
INVISIBLE LASER RADIATION
IS EMITTED FRO M THE END
OF FIBER OR CONNECTOR
Avoid direct exposure to beam
Do not view beam directly with
optical instruments
LASER APERTURE
INVISIBLE LASER RADIATION EMITTED FROM END OF FIBER OR CONNECTOR
Avoid exposure to beam
Class 3B Laser Product IEC-60825 1993 Max. Output: 500 mWWavelength: 1.55 µm
Agere Systems Inc.
9
Data Sheet, Rev.1Optical Amplifier Platform, 1724-TypeSeptember 2001Erbium-Doped Fiber Amplifier (W Series)
IEC
is a registered trademark of the International Electrotechnical Commission.
For additional information, contact your Agere Systems Account Ma na ger or the following:
INTERNET:
E-MAIL:
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EUROPE:
Agere Systems Inc. reserves the right to make changes to the product(s) or information contained herein without notice. No liability is assumed as a result of their use or application.