WDM-PON (wavelength-division-multiplexing passive optical network) system based on resource sharing protecting mechanism and method for protecting WDM-PON system based on resource sharing protecting mechanism

Abstract

The invention discloses a WDM-PON (wavelength-division-multiplexing passive optical network) system based on the resource sharing protecting mechanism and a method for protecting the WDM-PON system based on the resource sharing protecting mechanism. The WDM-PON system based on the resource sharing protecting mechanism comprises an optical line terminal, a first feeder optical fiber, a second feeder optical fiber, a far-end node, a distributed optical fiber and a WDM-PON system, wherein the optical line terminal is connected with one ends of the first feeder optical fiber and the second feeder optical fiber, the other ends of the first feeder optical fiber and the second feeder optical fiber are connected with the far-end node which is connected with one end of the distributed optical fiber; the WDM-PON system is divided into a WDM-PON 1 and WDM-PON 2 and comprises 2N optical network units and 2N network control units, the optical network units of the WDM-PON 1 and the WDM-PON 2 are grouped pairwise and are mutually connected through two interconnection optical fibers, and the network control units of the WDM-PON 1 and the WDM-PON 2 are grouped pairwise and mutually connected. Faults of the optical fibers can be detected in time on one side of the optical line terminal, protection switching is realized by switching optical switches, and protection of all optical fibers among the optical line terminal and the optical network units.

Description

Technical field [0001] The invention relates to a system in the field of optical communication technology, in particular to a WDM-PON system and a protection method based on a resource sharing protection mechanism. Background technique [0002] With the rapid development of information technology, emerging broadband services such as High Definition TV (HDTV), interactive games, large file sharing, video conferencing, etc. continue to emerge and grow, and the broadband and multi-services of the access network are uniformly carried And the transmission capacity puts forward higher requirements. Fiber-based passive optical network (Passive Optical Network, PON) has the advantages of large bandwidth and low cost, fiber to the premises (FTTP, Fiber To The Premise), fiber to the building (FTTB, Fiber To The Building) and fiber to the user ( FTTH, Fiber To The Home), has become an inevitable trend in the development of access network technology. [0003] The traditional Time Division Mu...

AI Technical Summary

Problems solved by technology

The disadvantage of this solution is that the detection of fiber link failures and the switching of protection paths are all performed at the ONU end, which increases the complexity of the ONU

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