Passive optical network protecting method and system

A passive optical network and protection system technology, applied in the field of passive optical network protection, can solve problems such as inability to develop services, poor business operations, and inability for operators to obtain benefits, achieve high practical value, improve survivability, guarantee effect of continuity

Inactive Publication Date: 2005-11-30
SOURCE PHOTONICS CHENGDU
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

All businesses cannot be carried out, causing adverse consequen

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  • Passive optical network protecting method and system
  • Passive optical network protecting method and system
  • Passive optical network protecting method and system

Examples

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[0026] See Figure 2-4 The PON system of the present invention is mainly composed of an OLT system with a protection function, a working optical fiber, and a 2xN optical splitter unit. The OLT system with protection function includes N-1 working OLT units, one protection OLT unit and APS modules, 1xN optical switches and n-1 1x2 optical switches. The APS module is responsible for signal detection and judgment of the failure of the OLT module, and performs the switching and recovery of the optical switch. The APS module is connected to N-1 working OLT and a protection OLT, and is also connected to a 1xN optical switch. The protection OLT is connected to an input end of the 1xN optical switch. N-1 ports of the N output ports of the 1xN optical switch and N-1 output ports of the working OLT are respectively connected to the two input ports of the 1x2 optical switch, and the output port of the 1x2 optical switch is connected to the optical fiber of the ODN. The OLT (protection) in the ...

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Abstract

This invention relates to light with no source protection method and system and relates to light communication technique. The invention aims to solve the problem of the current inefficient protection and realize the protection of the PON system. The invention sets back OLT connected to the back OLT through light switch.

Description

technical field [0001] The invention relates to optical communication technology, in particular to a protection technology of a passive optical network (PON). Background technique [0002] Recently, with the rapid development of the Internet, the user's demand for network bandwidth continues to increase. The traditional access network has become the bottleneck of the entire network. It has become an inevitable trend to replace it with new broadband access technology. As a point-to-multipoint optical fiber transmission and access technology, passive optical network (Passive Optical Network, PON) technology has attracted more and more attention. As the ultimate solution for the "last mile", it has been gradually accepted by operators and is currently being used on a large scale around the world. The system can be divided into APON and EPON according to different transmission mechanisms. They all adopt the broadcasting method for the downlink, the time division multiple acces...

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Application Information

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IPC IPC(8): H04L12/24
Inventor 王志波卢勇
Owner SOURCE PHOTONICS CHENGDU
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