As an elementary part in the whole optic communication systems, an optical transceiver is a device that uses fiber optical technology to transform electrical signals into optical signals so that the information could transmit in the optical fiber. And when optical signal arrives at the destination, the transceiver then transforms optical signals into electrical signals. In general, it is a device used to send and receive information which includes two parts: a transmitter and a receiver. Nowadays, optical transceiver modules are extensively used in high-speed optical communication systems which require high performance, compact package, and low power consumption. Different Optical Transceiver Types There are lots of optical transceiver types, such as SFP+ (SFP Plus) transceiver, X2 transceiver, XENPAK transceiver, XFP transceiver, SFP (Mini GBIC) transceiver, GBIC transceiver, CWDM/DWDM transceiver, 40G QSFP+ & CFP, 3G-SDI video SFP, WDM Bi-Directional transceiver and PON tr...