With the sustained growth of internet traffic

100 Gbit/s Ethernet has gradually become commercially available..Its client optical module is a 100 Gbit/s CFP optical transceiver module.This paper introduces the relevant standard of this module and describes the design scheme of a kind of module

which consists of rate conversion unit

transmitting unit

receiving unit and control unit.Tests are performed in the light of IEEE Std.802.3ba and the results indicate that the average launch power in each lane is 1.47 dBm and the receiver sensitivity is-9.5 dBm.This means that the performances of this module entirely conform to the relevant standards and can be applied in 100 Gbit/s Ethernet.