Information transmission system beneficial to multi-path optical transmission system

Abstract

The invention discloses an information transmission system beneficial to a multi-path optical transmission system. The system comprises an OLT end, an optical fiber link, an ODN device and an ONU device, wherein the OLT end comprises a plurality of OLT transmitting ends, a plurality of OLT receiving ends, a plurality of 1: M OLT optical couplers, a plurality of 1: M OLT optical beam splitters, anOLT wavelength division multiplexer, an OLT wavelength division demultiplexer and an OLT optical circulator; the ODN device comprises an ODN wavelength division multiplexer, an ODN wavelength divisiondemultiplexer, an ODN total optical circulator, an ODN optical circulator and a plurality of ODN optical beam splitters; the ONU device comprises an ONU optical circulator, an ONU sending end and anONU receiving end; the optical fiber link is respectively connected to the ODN wavelength division multiplexer and the ODN wavelength division demultiplexer through the ODN total optical circulator, and the ODN wavelength division multiplexer is connected to the plurality of ODN optical splitters through the plurality of ODN optical circulators and then connected to the plurality of ONU devices; the plurality of ONU devices are connected to the ODN wavelength division multiplexer through the plurality of ODN optical beam splitters.

Description

technical field [0001] The invention relates to the technical field of optical transmission, in particular to an information transmission system that is beneficial to a multi-channel optical transmission system. Background technique [0002] Passive Optical Network (PON) is a pure medium network, which avoids electromagnetic interference and lightning effects of external equipment, reduces the failure rate of lines and external equipment, improves system reliability, and saves maintenance costs. It is a technology long-awaited by the telecom maintenance department. [0003] Light sourceless network is a point-to-multipoint optical fiber transmission and access technology. Downlink adopts broadcast mode and uplink adopts time division multiple access mode. It can flexibly form tree, star, bus and other topological structures. It only needs to install a simple optical splitter, so it has the advantages of saving optical cable resources, sharing bandwidth resources, saving equ...

AI Technical Summary

Problems solved by technology

[0005] Existing AWG (Arrayed Waveguide Grating, Arrayed Waveguide Grating) and other wavelength division multiplexing devices cannot achieve wavelength channel allocation below 25 GHz. Based on the existing devices, the power budget cannot guarantee more light splitting

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