Fiber optic transceiver make interchange between the twisted pair electrical signalsa with short distance and optical signals with long distances. It is the Ethernet transmission media conversion unit. In many places, it is also known as the photoelectric converter or fiber optic converter (Fiber Converter )
Optical Multiplexer, is transmission equipment.it can make a plurality of E1 (data transmission standard for trunk lines, usually a rate of 2.048Mbps, this standard is used in Europe and China) signal into an optical signal transmission equipment (its main function is to achieve electricity - optica and optica - electric conversion)
making interchange between optical and electric
fiber optical transceiver only interchange optical and electrical, without changing the code, not the data for other processing, transceivers for Ethernet, and run 802.3, only for point to point connection
Optical Multiplexer, in addition to the photoelectric conversion work, but also the data signal multiplexing and demultiplexing. The optical multiplexer usually come out plurality of pairs of E1 lines. The SDH, PDH optical primarily for telecom operators to provide multiple pairs of point to point data circuit; Video Multiplexer is mainly used for video transmission requires timely areas of relatively high security monitoring, distance education, video conferencing, and can transmission control, switch, voice and Ethernet signals to meet the needs of multi-service applications, so we sometimes also referred to as multi-purpose optical multiplexer.