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System for transmitting single-fiber-optic two-way wavelength division multiplexing and its protection

A wavelength division multiplexing and single-fiber bidirectional technology, which is applied in the field of single-fiber bidirectional wavelength division multiplexing transmission system and its protection, can solve the problems that the working line and protection line cannot be switched normally, and achieve convenient multiplex section protection, The effect of eliminating influence

Inactive Publication Date: 2007-09-05
ZTE CORP
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AI Technical Summary

Problems solved by technology

[0015] In order to solve the problem that the switching of the working line and the protection line cannot be performed normally due to the existence of reflected light in the existing system, the purpose of the present invention is to provide a single-fiber bidirectional wavelength division multiplexing transmission system and its protection method, so that the single-fiber When the optical fiber of the working line or the protection line is broken, the two-way wavelength division multiplexing transmission system can realize the switching of the line in time and realize effective protection for the communication

Method used

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  • System for transmitting single-fiber-optic two-way wavelength division multiplexing and its protection
  • System for transmitting single-fiber-optic two-way wavelength division multiplexing and its protection
  • System for transmitting single-fiber-optic two-way wavelength division multiplexing and its protection

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Embodiment Construction

[0036] The single-fiber bidirectional wavelength division multiplexing transmission system of the present invention, as shown in Figure 3, is described on both sides of A and B for convenience of description, including:

[0037] Multiplexers and demultiplexers 101 and 102 respectively arranged on the A side and the B side;

[0038] A plurality of lasers 103 arranged on side A are connected to the multiplexer / demultiplexer 101;

[0039] A plurality of receivers 104 arranged on the B side are connected to the multiplexer / demultiplexer 102 and correspond to the plurality of lasers 103 respectively;

[0040] A plurality of lasers 103' arranged on the B side are connected with the multiplexer and demultiplexer 102;

[0041] A plurality of receivers 104' arranged on the A side are connected to the multiplexer 101 and correspond to a plurality of lasers 103' respectively;

[0042] A multiplexing section protection device and a laser controller 109 connected to multiplexer / demultipl...

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Abstract

The system comprises: laser; receiver; wave combiner and separator; multiplexing segment protection unit; and laser controller connected to one or more first receiver in the first laser and receiver for use in closing the first laser when the working line fibers or protection line fibers in the multiplexing segment protection unit are broken; the beam from the first laser will be reflected to t he beam detector when the working line fibers and protection fibers are broken.

Description

technical field [0001] The invention relates to a device for realizing a WDM (Wavelength Division Multiplexing, wavelength division multiplexing) transmission system and control method of a single-fiber bidirectional non-optical amplifier for multiplexing section protection, which is mainly used in the field of optical transmission. Background technique [0002] Traditional WDM transmission uses a pair of optical fibers to complete two-way communication. Each optical fiber carries a considerable amount of light waves to achieve high-capacity transmission. This kind of transmission mode generally carries a pair of services on the same wavelength in both directions, and the two communicating parties use the same wavelength for communication. In order to ensure the reliability of communication and prevent service interruption caused by fiber damage, protection devices are applied to the system. For point-to-point and ring communication, we can use the 1+1 multiplex section pr...

Claims

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Application Information

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IPC IPC(8): H04L12/24H04J14/02H04B10/071
CPCH04J14/029H04B10/071H04J14/0279
Inventor 叶兵迟海明
Owner ZTE CORP
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