Wavelength division multiplexing passive optical network system based on tangent ring structure

A passive optical network and wavelength division multiplexing technology, which is applied to the selection device, electrical components, selection device, etc. of the multiplexing system, can solve the problem of low system reliability and achieve the effect of protection

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

[0003] The purpose of the present invention is to provide a wavelength division multiplexing passive optical network system based on a tangent ring structure to solve the problem of low system reliability of the current wavelength division multiplexing passive optical network system due to its topology

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  • Wavelength division multiplexing passive optical network system based on tangent ring structure
  • Wavelength division multiplexing passive optical network system based on tangent ring structure
  • Wavelength division multiplexing passive optical network system based on tangent ring structure

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Embodiment Construction

[0024] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0025] Such as Figure 5 As shown, the wavelength division multiplexing passive optical network system based on the tangent ring structure of the present invention is composed of two tangent ring structures, wherein the main ring is formed by the optical line terminal OLT56 through two single-mode optical fibers, that is, the main ring feeder fiber 57 Connect M remote nodes RN of the main ring with 61 a 58, 59, 63, 64, and 65 are formed, and the subring is formed by a remote node RN on the main ring m 59 is the tangent point through two single-mode optical fibers, that is, sub-ring feeder fibers 60 and 62, and N sub-ring remote nodes RN b 66, 67, 68 and 69 are connected to form, each main ring remote node RN on the main ring a Connect q optical network units ONU through distributed optical fibers a , each sub-ring remote node RN on the s...

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Abstract

The invention relates to a wavelength division multiplexing passive optical network system based on a tangent ring structure and belongs to the technical field of fiber communication. The wavelength division multiplexing passive optical network system based on the tangent ring structure comprises a main ring formed by connecting an optical line terminal OLT with M remote nodes RN through double fibers, and a sub-ring formed by taking any one of the remote nodes RN on the main ring as a tangency point and connecting the tangency point with N remote nodes RN through fibers, 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 in the main ring and the sub-ring can be transmitted to each remote node RN 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 wavelength division multiplexing passive optical network system based on a tangent ring structure, and belongs to the technical field of optical fiber communication. Background technique [0002] Wavelength division multiplexing passive optical network (WDM-PON) technology can realize bandwidth upgrade by increasing the number of wavelengths transmitted in optical fiber without changing the physical infrastructure equipment, greatly improve the transmission capacity of the network, and realize virtual point-to-point transmission. And each user does not share information, prevents information leakage, has good security, has broad application prospects in optical access networks, and is considered to be the ultimate choice for the future evolution of fiber-to-the-home. At present, the research on WDM-PON is mainly based on the type of static wavelength allocation. The wavelength is fixed in the remote node RN to the optical net...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04Q11/00
Inventor 邵奇邵昱邵庆华吴晨光谢波
Owner STATE GRID CORP OF CHINA
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