Multiple-ring-tangency-type wavelength division multiplexing optical network system based on single fiber

A network system and wavelength division multiplexing technology, which is applied in the field of optical network systems based on single-fiber multi-ring tangent wavelength division multiplexing, can solve problems such as low reliability and difficult system expansion, and achieve the effect of protection

Inactive Publication Date: 2015-01-21
STATE GRID CORP OF CHINA +2
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Problems solved by technology

[0003] The purpose of the present invention is to provide a single-fiber multi-ring tangential wavelength division multiplexing optical network system to solve the problems of difficult expansion and low reliability of the current wavelength division multiplexing optical network system due to its topology

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  • Multiple-ring-tangency-type wavelength division multiplexing optical network system based on single fiber
  • Multiple-ring-tangency-type wavelength division multiplexing optical network system based on single fiber
  • Multiple-ring-tangency-type wavelength division multiplexing optical network system based on single fiber

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Embodiment Construction

[0022] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0023] Such as Figure 4 As shown, the single-fiber multi-ring tangential wavelength division multiplexing optical network system of the present invention includes a main ring and a sub-ring tangent to the main ring. The ring feeder optical fiber connects M remote nodes RN of the main ring to form a ring structure. Each remote node RN of the main ring is connected to k optical network units ONU through distributed optical fibers. The sub-ring is composed of at least two main rings Each of the remote nodes RN is connected to N sub-ring remote nodes RN through an optical fiber to form a ring structure, and each remote node RN on the sub-ring is also connected to k optical network units ONU through distributed optical fibers, here for Convenient description to RN m As a representative to uniformly explain the structure and working mode of the...

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Abstract

The invention relates to a multiple-ring-tangency-type wavelength division multiplexing optical network system based on a single fiber, and belongs to the technical field of fiber communication. The multiple-ring-tangency-type wavelength division multiplexing optical network system based on the single fiber comprises a main ring formed by connecting an optical line terminal OLT with M remote nodes RN through a fiber, and sub-rings formed by taking at least two remote nodes RN on the main ring as tangency points, and connecting each tangency point with N remote nodes RN through a fiber respectively, wherein each remote node RN is connected with an optical network unit ONU through a distribution fiber. When some section of a feeder fiber has fault, through the combination of photoswitches and optical circulators, signals can be transmitted to the optical line terminal of each remote node in a multiple-ring system in an anticlockwise or clockwise manner, thereby finding new paths for signal transmission in time and realizing the functions of system protection, dynamic wave length scheduling and scale expansion.

Description

technical field [0001] The invention relates to a single-fiber multi-ring tangential wavelength division multiplexing optical network system, which belongs to the technical field of optical fiber communication. Background technique [0002] Wavelength division multiplexing technology can upgrade the system bandwidth by increasing the number of wavelengths carried by a single optical fiber without changing the physical equipment of the optical network, improve network transmission capacity, and realize virtual point-to-point information transmission. The dedicated wavelength for information transmission without sharing information, thus effectively preventing information leakage, has better security, and has broad application prospects in the field of optical communications, especially in optical access networks. Compared with time-division multiplexing based The optical access network technology with advanced technology has huge advantages and is considered to be an excellen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B10/032H04B10/67H04B10/27H04J14/02
Inventor 练笔战邵奇隋博宋腾邵昱邵庆华王莉拜姝羽
Owner STATE GRID CORP OF CHINA
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