D2570/ D2526/ D2555 Wavelength-Selected Direct Modulated Isolated DFB Laser Module
Description
Data Sheet, Rev.
3 July 2001
D2570, D2526, D2555 Wavelength-Selected Direct Modulated Isolated DFB Laser Module
Applications
s
Three direct-modulated DWDM families available to meet a number of OC-48/STM-16 applications: — Extended reach (100 km) — Very long reach (170 km) — Metro DWDM — Digital video
Product Codes
Product Code
The 1.
5 µm D2570, D2526G, and D2555 Laser Modules are available in a 14-pin, hermetic, butterfly package.
Peak Power 10 mW 2 mW 2 mW
Dispersion Performance 1800 ps/nm (100 km) 1800 ps/nm (100 km) 3000 ps/nm (170 km)
D2570H D2526G D2555G
Features
s
ITU wavelengths available from 1528.
77 nm —1610.
06 nm SONET/SDH compatible up to OC-48/STM-16 Temperature tunable for precise wavelength selection Integrated optical isolator High-performance, multiquantum well (MQW) distributed-feedback (DFB) laser Industry-standard, 14-pin butterfly package Characterized at 2.
488 Gbits/s (NRZ) InGaAs, PIN photodetector back-facet monitor Low threshold current High-reliability, hermetic packaging Excellent long-term wavelength stability can eliminate the need for external wavelength locker Qualified to meet the intent of Telcordia Technologies * 468
Description
The Direct Modulated Isolated DFB Laser Module contains an internally cooled, InGaAs, MQW, distributed-feedback (DFB) laser designed for 1.
5 µm applications.
The following three direct-modulation DWDM product families have been established to meet various OC-48/STM-16 system applications:
s
s s
s s
s s s s s s
D2526-type: designed to be used in OC-48/ STM-16 (2.
488 Gbits/s) for extended reach, dense WDM applications (1800 ps/nm).
The wavelength of the laser can be temperature-tuned for precise wavelength selection by adjusting the temperature of the internal thermoelectric cooler.
D2555-type: high-performance device designed for very low dispersion; used in fiber spans exceeding 170 km (3000 ps/nm).
D2570-type: high-power, direct-modulated laser eliminates the need for optical amplifiers in DWDM...
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