Data Sheet
March 2000
Wavelength-Selected D2525P
Isolated DFB Laser Module with PMF
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 1.5 µm D2525P Laser Module is available in a 14-pin, hermetic, 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
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 orientation. 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), distributedfeedback (DFB) laser. This device nominally has an
output power of 10 mW. The wavelength of the laser
can be temperature-tuned for more precise wavelength selection by adjusting the temperature of the
internal thermoelectric cooler.
