Data Sheet

March 2000

Wavelength-Selected D2525P

Isolated DFB Laser Module with PMF

The 1.5

µm D2525P Laser Module is available in a 14-pin, her-

metic, butterfly package.

Features

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ITU wavelengths available from

1529.55 nm —1610.06 nm

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Integrated optical isolator

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High-performance, multiquantum-well (MQW),

distributed-feedback (DFB) laser

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Industry-standard, 14-pin butterfly package

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Hermetic package

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InGaAs, PIN photodetector back-facet monitor

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Polarization-maintaining fiber pigtail

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For use with lithium niobate modulators

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High reliability

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Narrow linewidth

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High optical power available

Applications

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Telecommunications

— SONET/SDH OC-48/STM-16, OC-192/STM-64

— Extended and ultralong reach

— Undersea systems

— Dense WDM systems

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Digital video

Description

The D2525P family of DFB laser modules is

designed to be used with a lithium niobate external

modulator (see Table 4). The laser module features a

polarization-maintaining fiber (PMF) pigtail, enabling

it to be directly connected to a modulator without the

need of a polarization controller. The PMF maintains

the polarization of the output light to a consistent ori-

entation. This allows the D2525P to be used as a CW

light source for systems requiring extremely low chirp

such as undersea or 10 Gbits/s systems. The module

contains a multiquantum-well (MQW), distributed-

feedback (DFB) laser. This device nominally has an

output power of 10 mW. The wavelength of the laser

can be temperature-tuned for more precise wave-

length selection by adjusting the temperature of the

internal thermoelectric cooler.