This data sheet introduces the features of D2570, D2526, D2555 wavelength-selected direct modulated isolated DFB laser modules
This datasheet describes the D2570, D2526G, and D2555 Wavelength-Selected Direct Modulated Isolated DFB Laser Modules. These modules are available in a 14-pin hermetic butterfly package and feature an internally cooled InGaAs MQW distributed-feedback laser with an integrated optical isolator.
The document provides detailed electrical and optical characteristics for three product families: the D2570-type for high-power applications, the D2526-type designed for extended reach (1800 ps/nm dispersion penalty), and the D2555-type for very long reach exceeding 170 km (3000 ps/nm). Key features include ITU wavelength availability from 1528.77 nm to 1610.06 nm, temperature tunability for precise selection, and qualification to Telcordia Technologies standards.
| Package Type | 14-pin hermetic butterfly package |
|---|---|
| Operating Case Temperature Range | -40 to +70 °C |
| Optical Isolation | 30 dB minimum |
The minimum fiber bend radius is 1.23 inches (31.25 mm).
Ground connections must be made first, followed by the most negative supply, then the most positive supply, and finally all remaining connections.