Wave time division mixed multiplexing passive optical network system

Abstract

The invention discloses a wavelength-division time-division mixed multiplexing passive optical network system, which at least comprises an optical line terminal, an optical distribution network and a plurality of optical network units. The optical line terminal is used to send downlink optical signal wave bands of a plurality of services, make multiplexing wave coupling to the optical signal wave bands of the plurality of services, then allow the optical signal wave bands to enter the same single fiber and transmit the optical signal wave bands to the optical distribution network; the optical distribution network is used to demultiplex an optical signal which is received from the optical line terminal and wave-coupled, then makes multi-level selective download and transparent transmission to one or a plurality of optical signals after the demultiplexing, and makes power division of one or the plurality of demultiplexed optical signals to the optical network units; the optical network units are used to receive light signals of the plurality of services downloaded by the optical distribution network through a coupling fiber, and logically processes the optical signals. The wavelength-division time-division mixed multiplexing passive optical network system has the advantages of large single-fiber access capacity, low cost of network construction, easy operation maintenance and upgrade and so on.

Description

technical field [0001] The invention relates to the field of optical access network, in particular to the technical field of HPON (Wavelength Division Time Division Hybrid Multiplexing Passive Optical Network). Background technique [0002] The optical access network is an important part of the next generation network, and it is also the main direction for the development of optical communication technology in the next ten years. In order to meet the ever-increasing demand for the integration and development of multiple services and technologies, it is of great significance to study new optical access network architecture methods and new technology solutions. [0003] The development trend of the optical access network strongly requires the realization of "network convergence" of multiple services such as video, data and voice, as well as other potential special services, for example, integrated access to high-bandwidth broadcast or multicast services (such as VOD, video on ...

AI Technical Summary

Problems solved by technology

[0005] In view of the above analysis, the present invention aims to provide a multi-level wavelength division time division hybrid multiplexing passive optical network system carrying multiple services to solve the problems of high construction and maintenance costs of passive optical networks in the prior art. question

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