Relay optical module

Abstract

The invention discloses a relay optical module, which belongs to the technical field of optical fiber communication. It includes a first light detection unit, a first electrical signal processing unit, a first clock data recovery unit and a first light emitting unit, the first light detection unit is used to receive a discontinuous first light signal, and convert the first light signal into A discontinuous first electrical signal; the first electrical signal processing unit is used to convert the first electrical signal into a continuous second electrical signal; the first clock data recovery unit is used to recover the clock data of the second electrical signal to obtain the third Electric signal; the first light emitting unit is used for sending out a continuous second light signal according to the third electric signal. By serializing the discontinuous first optical signal and then performing the clock data recovery process, the clock data recovery unit is always in a normal working state, realizing the clock data recovery of the optical signal and ensuring long-distance transmission at the same time , to ensure the accuracy of optical signal reception.

Description

technical field [0001] The invention relates to the technical field of optical fiber communication, in particular to a relay optical module. Background technique [0002] With the development of optical fiber communication technology, a PON (Passive Optical Network, Passive Optical Network) system has been widely used. Such as figure 1 Shown is a schematic structural diagram of a PON system in the prior art, including an OLT (Optical Line Terminal, Optical Line Terminal), an optical splitter, and multiple ONUs (Optical Network Unit, Optical Network Unit). Wherein, the optical splitter includes a common port and 2N optical splitting ports, and is used for splitting one optical signal received by the common port into 2N optical signals. The OLT is set in the central office and connected to the common port of the optical splitter; multiple ONUs are set in the user end, and each ONU is connected to a splitting port of the optical splitter. In the PON system, the optical signa...

AI Technical Summary

Problems solved by technology

[0004] Due to the phase shift of the optical signal during the long-distance transmission, if the receiving end can receive the optical signal normally, it is necessary to restore the phase of the optical signal with the phase shift. Phase recovery of discontinuous optical signals makes the transmission distance of optical signals up to 20 kilometers, which limits the transmission distance of optical signals

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