D2525P49 Datasheet | Agere Systems

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 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 m W. The wavelength of the laser can be temperature-tuned for more precise wavelength selection by adjusting the temperature of the internal thermoelectric cooler. The 1.5 µm D2525P Laser Module is available in a 14-pin, hermetic, butterfly package. Features s ITU wavelengths available from 1529.55 nm - 1610.06 nm Integrated optical isolator High-performance, multiquantum-well (MQW), distributed-feedback (DFB) laser Industry-standard, 14-pin butterfly package Hermetic package In Ga As, PIN photodetector back-facet monitor Polarization-maintaining fiber pigtail For use with lithium niobate modulators High reliability Narrow linewidth High optical power available s s s s s s s s s s Wavelength-Selected D2525P Isolated DFB Laser Module with PMF Data Sheet March 2000 Description (continued) Controlled Feedback The module contains an internal optical isolator that suppresses optical feedback in laser-based, fiber-optic systems. Light reflected back to the laser is attenuated a minimum of 30 d B. CORE STRESS ROD PRINCIPAL POLARIZATION AXIS CLADDING INNER COATING (SILICON & ACRYLATE) OUTER COATING (ACRYLATE OR NYLON) 1-771(C).a Controlled Temperature An integral thermoelectric cooler (TEC) provides stable thermal characteristics. The TEC allows for heating and cooling of the laser chip to maintain a temperature of 25 °C for case...