Finisar develops Fabry-Perot-based TOSA, ROSA

SEPTEMBER 11, 2007 — Finisar Corporation of Sunnyvale, CA, introduced transmitter and receiver optical subassembly pairs (TOSA/ROSA) based on Fabry-Perot lasers and PIN detectors. The TOSA/ROSA family meets the IEEE 10-G BASE-LRM standard and will debut at ECOC, Booth 17048.

Fabry-Perot laser diodes allow the TOSA and ROSA components to use less power, expand control, and improve performance compared to LRM products based on distributed feedback lasers (DFBs), according to Finisar. These 1310-nm LRM subassemblies complement the company's 850-nm short-reach products.

Within the ROSA, automatic gain control and receive-signal detect capabilities reportedly enable developers to optimize individual link performance and implement intelligent fault detection. Within the TOSA, an impedance-matching network reduces power consumption. The TOSA and ROSA are offered in two connector options (SC and LC) and include a flex circuit for simplified electrical connectivity.