Preliminary Data Sheet
March 2001
1738U-Type Small Form-Factor
Erbium-Doped Fiber Amplifier with Uncooled Pump
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.
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
Extremely low power consumption: <875 mW
Single-channel amplification in C-band
(1528 nm—1562 nm)
Uncooled 980 nm pump laser module
Wide operating temperature range:
–5 °C to +70 °C
Optical input tap
Isolated input and output
Connectorized single-mode fiber pigtail
s
s
s
s
s
s
s
1738U-Type Small Form-Factor
Erbium-Doped Fiber Amplifier with Uncooled Pump
Preliminary Data Sheet
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.
Parameter
Operating Case Temperature Range
Storage Case Temperature Range
Laser Forward Current
Laser Reverse Voltage
Symbol
T
OP
Tstg
I
F
V
R
Min
–5
–40
—
—
Max
70
85
500
2.5
Unit
°C
°C
mA
V
Electrical/Optical Operational Characteristics
Table 1. Optical/Electrical Characteristics
Parameter
Wavelength Range
Optical Output Power
Optical Input Power
Noise Figure
Symbol
λ
P
OUT
P
IN
NF
Conditions
—
P
IN
= –30 dBm to –8 dBm
—
P
IN
= –30 dBm
P
IN
= –20 dBm
P
IN
= –15 dBm
P
IN
= –8 dBm
—
—
—
P
IN
= –30 dBm,
P
OUT
= –5 dBm
P
IN
= –30 dBm,
P
OUT
= –5 dBm,
λ
= 1562 nm
P
IN
= –30 dBm
—
—
—
—
—
Min
1528
–5
–30
—
—
—
—
—
—
—
—
—
Max
1562
—
–8
5.5
5.7
6.8
8.5
350
2.5
875
–20
–26
Unit
nm
dBm
dBm
dB
dB
dB
dB
mA
V
mW
dBm
dBm
Operating Laser Forward Current
Operating Laser Forward Voltage
Power Consumption
ASE Noise Power at Optical Input Port
Output Leakage Pump Power
I
F,OP
V
F,OP
P
C
P
ASE,I
P
LEAK,O
Reverse Isolation
Input Monitor Tap Responsivity
Polarization Sensitivity
Polarization Mode Dispersion
Optical Input Return Loss
Optical Output Return Loss
I
ISO
R
TAP
PDG
PMD
RL
I
RL
O
25
0.032
—
—
30
30
—
0.063
0.5
0.5
—
—
dB
A/W
dBp-p
ps
dB
dB
2
Agere Systems Inc.
Preliminary Data Sheet
March 2001
1738U-Type Small Form-Factor
Erbium-Doped Fiber Amplifier with Uncooled Pump
Pin Information
Table 2. Pin Descriptions
Pin
1
2
3
4
5
6
7
8
9
10
Description
Ground Monitor Photodiode
Input Monitor Photodiode Cathode
Input Monitor Photodiode Anode
Not Connected
Not Connected
Thermistor 1
LD+ (pump anode)
LD+ (pump anode)
Pump Monitor Photodiode Cathode
Pump Monitor Photodiode Anode
Pin
11
12
13
14
15
16
17
18
19
20
Description
Not Connected
Not Connected
Not Connected
Not Connected
Not Connected
Not Connected
Ground Pump
Thermistor 2
LD– (pump cathode)
LD– (pump cathode)
Agere Systems Inc.
3
1738U-Type Small Form-Factor
Erbium-Doped Fiber Amplifier with Uncooled Pump
Preliminary Data Sheet
March 2001
Outline Diagram
Dimensions are in inches and (millimeters): 2.75 x 3.54 x 0.47 (70 x 90 x 12).
0.098
(2.50)
2.834
(72.00)
0.353
(8.98)
2x M2.5 TAPPED HOLES
4x M4.0
THUR HOLES
2x 0.77
(4.50)
3.540
(89.92)
3.268
(83.00)
0.136
(3.46)
0.285
(7.24)
9x 0.079
(2.0)
OUT
2.750
(69.85)
PIN 20
PIN 19
2.480
(63.00)
60.0°
IN
1.024
(26.00)
(PIN 1)
0.079
(2.01)
0.768
(9.50)
(PIN1)
0.135
(3.43)
0.324
(8.24)
LABEL AS REQUIRED/
PRODUCT INFORMATION
0.098
(2.50)
0.472
(11.99)
2.834
(72.00)
2x M2.5 TAPPED HOLES
0.353
(8.96)
1-1257(F)
4
Agere Systems Inc.
Preliminary Data Sheet
March 2001
1738U-Type Small Form-Factor
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
µm/125 µm
single-mode fiber pigtail with connector options
Wavelength = 1.5
µm
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.
DANGER
INVISIBLE LASER RADIATION
EMITTED FROM END OF
FIBER OR CONNECTOR
Avoid direct exposure to beam
LASER APERTURE
Do not view beam directly with
optical instruments
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
µm
*
IEC
is a registered trademark of the International Electrotechnical Commission.
Agere Systems Inc.
5
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