The PT-40G is a -10.5 dBm sensitivity, differential-output receiver module for OC-768 transmission system receive applications. It couples a back-illuminated PIN photodiode, usable from 1200 nm to 1650 nm, with an internal transimpedance gain stage. This combination produces a receiver with a 40 GHz bandwidth and conversion gain of 2600 V/W differential. The differential-output module is offered in a compact 8-pin package with single-mode fiber and dual GPPOTM output connectors. The receiver meets Telcordia GR-468 qualification standards.