PON backbone line protection device and method

A line protection and backbone technology, which can be used in the field of PON backbone line protection devices, and can solve problems such as service interruption
CN104378153AInactive Publication Date: 2015-02-25SHANGHAI SINO TELECOM TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHANGHAI SINO TELECOM TECH
Publication Date
2015-02-25
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a PON backbone line protection device which comprises a PON protection local side device and a PON protection shunt. The PON protection local side device is connected with an OLT device and used for monitoring the state of a main line and the state of a spare line and controlling selection of the main line or the spare line; the PON protection shunt is connected with the PON protection local side device and ONU devices and used for equally dividing PON signals; the PON protection local side device comprises an optical switch, a filter connected with the optical switch, a circulator connected with the filter, a laser device and a detector, and the laser device and detector are connected with the circulator; the PON protection shunt is provided with a reflection membrane used for reflecting monitoring light. Automatic switchover protection of the main line and the spare line of a PON line is achieved through the PON backbone line protection device; when a main optical fiber is disconnected because of a fault, the PON protection local side device can be automatically switched to the spare line, and it is guaranteed that the PON line can normally work.
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Description

technical field

[0001] The invention belongs to the technical design field of electrical communication, and in particular relates to a protection device and a protection method applicable to PON backbone lines. Background technique

[0002] With the implementation of fiber-in and copper-out and the construction of FTTX networks, more and more telecom services are carried by PON networks. As the rate of PON implementation is getting faster and faster, failure of any node in the PON system will cause a large area of ​​service interruption, which is unacceptable for users with high reliability requirements. Therefore, it is particularly important to protect the PON network to achieve stable bearer capacity of the PON network. How to protect the PON network more effectively is an important issue facing the construction of EPON and GPON networks in the future. Now in the market, there is an urgent need for a low-cost, high-reliability PON backbone line protection device and prot...

Claims

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