1738U-Type Small Form-Factor
Erbium-Doped Fiber Amplifier with Uncooled Pump
Preliminary Data Sheet
March 2001
Compact size and extremely low power consumption make
the 1738U-Type EDFA an ideal solution for single-channel,
preamplification applications in C-band.
Features
s
Economical, compact package:
90 mm x 70 mm x 12 mm
s
Extremely low power consumption: <875 mW
s
Single-channel amplification in C-band
(1528 nm--1562 nm)
s
Uncooled 980 nm pump laser module
s
Wide operating temperature range:
5 C to +70 C
s
Optical input tap
s
Isolated input and output
s
Connectorized single-mode fiber pigtail
Applications
s
Single-channel links in:
-- Metro systems
-- Long-haul transport
-- Switch matrix
Description
The 1738U-Type Uncooled Small Form-Factor
Erbium-Doped Fiber Amplifier (SFF EDFA) is
designed for single-channel amplification in C-band
applications. The device is manufactured in an eco-
nomical SFF package and exhibits extremely low
power dissipation over a wide operating temperature
range.
Optimum performance and system stability are sup-
ported through the use of optical isolation at the input
and output. Optical input and output functions are
achieved through single-mode fiber pigtails termi-
nated with optical connectors. The EDFA incorpo-
rates an optical input tap and monitor photodiode.
2
Agere Systems Inc.
1738U-Type Small Form-Factor
Preliminary Data Sheet
Erbium-Doped Fiber Amplifier with Uncooled Pump
March 2001
Absolute Maximum Ratings
Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are abso-
lute 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.
Electrical/Optical Operational Characteristics
Parameter
Symbol
Min
Max
Unit
Operating Case Temperature Range
T
OP
5
70
C
Storage Case Temperature Range
Tstg
40
85
C
Laser Forward Current
I
F
--
500
mA
Laser Reverse Voltage
V
R
--
2.5
V
Table 1. Optical/Electrical Characteristics
Parameter
Symbol
Conditions
Min
Max
Unit
Wavelength Range
--
1528
1562
nm
Optical Output Power
P
OUT
P
IN
= 30 dBm to 8 dBm
5
--
dBm
Optical Input Power
P
IN
--
30
8
dBm
Noise Figure
NF
P
IN
= 30 dBm
P
IN
= 20 dBm
P
IN
= 15 dBm
P
IN
= 8 dBm
--
--
--
--
5.5
5.7
6.8
8.5
dB
dB
dB
dB
Operating Laser Forward Current
I
F,OP
--
--
350
mA
Operating Laser Forward Voltage
V
F,OP
--
--
2.5
V
Power Consumption
P
C
--
--
875
mW
ASE Noise Power at Optical Input Port
P
ASE,I
P
IN
= 30 dBm,
P
OUT
= 5 dBm
--
20
dBm
Output Leakage Pump Power
P
LEAK,O
P
IN
= 30 dBm,
P
OUT
= 5 dBm,
= 1562 nm
--
26
dBm
Reverse Isolation
I
ISO
P
IN
= 30 dBm
25
--
dB
Input Monitor Tap Responsivity
R
TAP
--
0.032
0.063
A/W
Polarization Sensitivity
PDG
--
--
0.5
dBp-p
Polarization Mode Dispersion
PMD
--
--
0.5
ps
Optical Input Return Loss
RL
I
--
30
--
dB
Optical Output Return Loss
RL
O
--
30
--
dB
3
Agere Systems Inc.
Preliminary Data Sheet
1738U-Type Small Form-Factor
March 2001
Erbium-Doped Fiber Amplifier with Uncooled Pump
Pin Information
Table 2. Pin Descriptions
Pin
Description
Pin
Description
1
Ground Monitor Photodiode
11
Not Connected
2
Input Monitor Photodiode Cathode
12
Not Connected
3
Input Monitor Photodiode Anode
13
Not Connected
4
Not Connected
14
Not Connected
5
Not Connected
15
Not Connected
6
Thermistor 1
16
Not Connected
7
LD+ (pump anode)
17
Ground Pump
8
LD+ (pump anode)
18
Thermistor 2
9
Pump Monitor Photodiode Cathode
19
LD (pump cathode)
10
Pump Monitor Photodiode Anode
20
LD (pump cathode)
4
Agere Systems Inc.
1738U-Type Small Form-Factor
Preliminary Data Sheet
Erbium-Doped Fiber Amplifier with Uncooled Pump
March 2001
Outline Diagram
Dimensions are in inches and (millimeters): 2.75 x 3.54 x 0.47 (70 x 90 x 12).
0.353
(8.98)
2x M2.5 TAPPED HOLES
2.834
(72.00)
0.098
(2.50)
2x 0.77
(4.50)
0.285
(7.24)
0.324
(8.24)
0.472
(11.99)
0.768
(9.50)
0.353
(8.96)
2.834
(72.00)
2x M2.5 TAPPED HOLES
0.098
(2.50)
60.0
OUT
IN
3.540
(89.92)
3.268
(83.00)
2.750
(69.85)
0.136
(3.46)
9x 0.079
(2.0)
1.024
(26.00)
(PIN 1)
0.079
(2.01)
LABEL AS REQUIRED/
PRODUCT INFORMATION
(PIN1)
PIN 19
PIN 20
2.480
(63.00)
0.135
(3.43)
4x M4.0
THUR HOLES
1-1257(F)
5
Agere Systems Inc.
Preliminary Data Sheet
1738U-Type Small Form-Factor
March 2001
Erbium-Doped Fiber Amplifier with Uncooled Pump
Laser Safety Information
Class IIIb Laser Product
FDA/CDRH Class IIIb laser product. All versions of the device are Class IIIb laser products per CDRH, 21 CFR
1040 Laser Safety requirements. All versions are Class IIIb laser products per
IEC
* 60825-1:1993. The devices
have been classified with the FDA under an accession number to be determined.
This product complies with 21 CFR 1040.10 and 1040.11.
8.8
m/125
m single-mode fiber pigtail with connector options
Wavelength = 1.5
m
Maximum power = 10 mW
Product is not shipped with power supply.
CAUTION: Use of controls, adjustments, and procedures other than those specified herein may result in
hazardous laser radiation exposure.
*
IEC
is a registered trademark of the International Electrotechnical Commission.
DANGER
INVISIBLE LASER RADIATION
EMITTED FROM 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-60825M 1993 Max. Output: 10 mW
Wavelength 1.5
m
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