Knowledge

what is optical module



The optical module is composed of optoelectronic devices, functional circuits and optical interfaces. The optoelectronic devices include two parts: transmit and receive.

Simply put, the role of optical module is photoelectric conversion, the transmitter side of the electrical signal into optical signals, through the optical fiber transmission, the receiver and then convert the optical signal into electrical signals.

Optical module, mainly divided into: GBIC, SFP, SFP +, XFP, SFF, CFP, optical interface types, including SC and LC. But now commonly used is SFP, SFP +, XFP, rather than GBIC. The reason is that the GBIC is bulky and prone to bad. And "SFP is now very small, and cheap."

Type: single-mode optical module for long-distance transmission; multi-mode optical module for short-distance transmission.

Role: optical module for the switch between the device and the transmission of the carrier, compared to the transceiver more efficient, security.


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