Data Sheet
December 2000
D372-Type Digital Uncooled DFB
Laser Module for 2.5 Gbits/s Applications
Applications
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SONET OC-48/STM-16 systems
Telecommunications
Secure digital data systems
Benefits
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Easily board mounted
Gull wing leads
No additional heat sinks required
Low-cost alternative to industry-standard, 14-pin
isolated laser module (ILM)
Highly efficient DFB-MQW laser structure allows
for lower threshold and drive currents, and reduced
power consumption
The low-profile D372-Type Laser Module is ideally suited for
OC-48 SONET and other high-speed digital applications.
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Features
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8-pin package suitable for SONET applications
Narrow linewidth, distributed feedback, multiquan-
tum-well (DFB-MQW)1.3
µ
m laser with single-
mode fiber pigtail
Choice of wide operating temperature ranges:
–40
°
C to +85
°
C or 0
°
C to +85
°
C
No TEC required
High output power: typical 2.0 mW peak power
coupled into single-mode fiber
Hermetically sealed active components
Internal back-facet monitor
Built-in thermistor and bias T
25
Ω
input impedance
Internal isolator
Qualification program:
Telcordia Technologies
*
TA-983
Description
The D372-type uncooled laser module consists of a
laser diode coupled to a single-mode fiber pigtail.
The device is available in a standard, 8-pin configu-
ration (see Figure 1 and/or Table 1) and is ideal for
long-reach (SONET) and other high-speed digital
applications.
The module includes a narrow linewidth (<1 nm),
DFB-MQW single-mode laser and an InGaAs PIN
photodiode back-facet monitor in a hermetically
sealed package.
This package is optimized for a 25
Ω
input imped-
ance and allows for dc biasing through an internal
bias T. A thermistor has been included for feedback
to board-level bias circuitry, if needed.
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Telcordia Technologies
is a registered trademark of Telcordia
Technologies, Inc.
AGERE [ AGERE SYSTEMS ]
