The MSA-compatible 2.5Gbit/s TOSA (transmit optical subassembly) launched by Bookham is designed as an in-feed to the growing TDM, CWDM and DWDM SFP markets, and can also be used to replace 14-pin butterfly DMLs (direct modulated lasers) on card applications. Incorporating the company's buried hetero-structure laser, the device has a transmission capability of 125Mbit/s to 5.3Gbit/s over 1600 to 6000ps/nm dispersion, with low penalty and a high extinction ratio of greater than 10dB. At OC48 data rate, it has a reach of up to 360km in the C band and 200km in the L band.