D372-Type Digital Uncooled DFB

Laser Module for 2.5 Gbits/s Applications

Data Sheet

December 2000

The low-profile D372-Type Laser Module is ideally suited for

OC-48 SONET and other high-speed digital applications.

Features

s

8-pin package suitable for SONET applications

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Narrow linewidth, distributed feedback, multiquan-

tum-well (DFB-MQW)1.3

µm laser with single-

mode fiber pigtail

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Choice of wide operating temperature ranges:

–40

°C to +85 °C or 0 °C to +85 °C

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No TEC required

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High output power: typical 2.0 mW peak power

coupled into single-mode fiber

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Hermetically sealed active components

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Internal back-facet monitor

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Built-in thermistor and bias T

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25

Ω input impedance

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Internal isolator

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Qualification program:

Telcordia Technologies *

TA-983

*

Telcordia Technologies is a registered trademark of Telcordia

Technologies, Inc.

Applications

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SONET OC-48/STM-16 systems

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Telecommunications

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Secure digital data systems

Benefits

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Easily board mounted

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Gull wing leads

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No additional heat sinks required

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Low-cost alternative to industry-standard, 14-pin

isolated laser module (ILM)

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Highly efficient DFB-MQW laser structure allows

for lower threshold and drive currents, and reduced

power consumption

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.