Point-to-point optical transmitting and receiving system, CCMTS device and broadcasting and television two-way access network system

Abstract

The invention provides a point-to-point optical transmitting and receiving system, a CCMTS device and a broadcasting and television two-way access network system. The point-to-point optical transmitting and receiving system comprises a reverse optical receiving system and a forward optical transmitting system. The reverse optical receiving system is used for processing a plurality of pass-back optical signals to obtain attenuated mixed electric signals. The forward optical transmitting system is used for processing DOCSIS (Data Over Cable Service Interface Specifications) electric signals to obtain the optical signals with adjustable optical attenuation, mixing the optical signals with adjustable optical attenuation and CATV optical signals, and outputting the mixed signals. The pass-back convergence noise interference existing in a coaxial distribution network can be effectively inhibited, and the problem that the coaxial remote transmission loss is high is overcome.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a point-to-point optical transceiver system, CCMTS equipment and a radio and television bidirectional access network system. Background technique [0002] With the development of broadband data services, communication technologies, and video resources, the cable TV network carries more and more services, the business forms are more and more abundant, and the network and operation requirements are getting higher and higher. High bandwidth and easy control and management It has become inevitable for the development of the network. [0003] Using the C-CMTS traditional networking scheme based on C-DOCSIS, the optical node and its link to the user terminal are all connected by the coaxial distribution network, and the coaxial distribution network connection will have the long-distance transmission of the coaxial itself. This leads to the problem of large loss; at the same time...

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Problems solved by technology

[0003] Using the C-CMTS traditional networking scheme based on C-DOCSIS, the optical node and its link to the user terminal are all connected by the coaxial distribution network, and the coaxial distribution network connection will have the long-distance transmission of the coaxial itself. This leads to the problem of large loss; at the same time, for the return signal, through the coaxial distribution network, it enters the DOCSIS uplink from the C-CMTS hybrid output port, converts it into an optical signal, and transmits it back to the front end. There will be a problem of reverse aggregation noise interference

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