Passive optical network system and light path processing method

Abstract

The invention discloses an inactive optical network system and a relative optical path processing method, wherein in descending data process, the invention uses filter and optical path connector to combine the output paths of central devices of TDM-PON and WDM-PON, via beam divider and filter unit to be divided and / or filtered to be sent to a TDM-PON user terminal and a splitting / combining device, and in ascending data process, the invention uses the beam divider and filter unit to combine the output optical paths of the TDM-PON user terminal and the splitting / combining device, and via a filter and optical path connector, the combined optical path is divided and / or filtered to be sent to the central devices of TDM-PON and WDM-PON. The invention realizes the coexistence of TDM-PON system and WDM-PON system, to avoid resource waste caused by upgrading TDM-PON user terminal to WDM-PON user terminal.

Description

technical field [0001] The invention relates to passive optical network technology, in particular to a passive optical network system and an optical path processing method thereof. Background technique [0002] In the current communication services, the development of video services, especially Internet TV (IPTV) services, causes a sharp increase in communication traffic, which puts forward a higher demand for bandwidth. At present, the data transmission of communication services mainly adopts the digital subscriber line (XDSL) technology, but the XDSL technology cannot meet the bandwidth requirements of high-definition television (HDTV). [0003] In order to meet the increasingly high bandwidth requirements of communication services, Passive Optical Network (PON) is used as the access network in the communication network. [0004] The existing passive optical network is divided into time division multiplexing passive optical network (TDM-PON) and wavelength division multip...

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Problems solved by technology

[0007]Time Division Multiplexing-Passive Optical Network (TDM-PON) all optical network user terminals share uplink and downlink bandwidth, so these networks have some obvious disadvantages: optical The net bandwidth of network user terminals is not high, and the confidentiality performance is poor

However, this time division multiplexing is not exactly the same as that in the existing TDM-PON system. All optical network user terminals in the existing TDM-PON system correspond to a wavelength range rather than a fixed wavelength value. , so this method does not really achieve the coexistence of existing TDM-PON and WDM-PON systems

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