In recent years, with the rapid growth of user demand for 40G and 100G optical module transmission links, cloud computing, mobile broadband and IPTV users have increasingly demanded bandwidth. 40G links have been deployed for several years. Today, 40G optical transceivers are ubiquitous in data centers. In the past two years, 100G optical transceivers have developed rapidly in the data center market due to the development of the optical industry centered on "100G network deployment". The 100G optical module transceiver types currently on the market are: QSFP28 optical tranceiver, CFP optical tranceiver, CFP2 optical tranceiver, CFP4 optical tranceiver and CXP optical tranceiver. Here Unitekfiber is briefly introduce all these 100G Optical tranceivers.