Long-distance high-precision optical fiber interference sensing and positioning system
A high-precision, optical fiber interference technology, applied in the field of communication, can solve the problems of channel waste, long distance, and the sensing distance is difficult to reach the applicable distance of submarine optical cables, etc., to achieve the effect of solving the occupation of optical cable channels and improving utilization efficiency
Pending Publication Date: 2019-10-15
GUANGDONG FUAN TECH DEV
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Problems solved by technology
Submarine optical cables and dedicated optical cables have extremely long distances, and it is impossible to report to the police and locate them in time when an intrusion occurs
How to quickly and accurately implement anti-theft on ultra-long-distance optical fiber lines is a complex project
[0003] The existing optical fiber vibration positioning anti-theft technology can be applied to a length of no more than 200 kilometers, and generally needs to occupy two optical fiber channels to realize it. For ultra-long-distance submarine optical cables and dedicated line optical cables, it is a waste of channels. At the same time The sensing distance of existing equipment is also difficult to reach the applicable distance of submarine optical cables
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[0030] In order to facilitate the understanding of those skilled in the art, the present invention will be further described below in conjunction with the embodiments and accompanying drawings, and the contents mentioned in the embodiments are not intended to limit the present invention. The present invention will be described in detail below in conjunction with the accompanying drawings.
[0031] A long-distance and high-precision optical fiber interference sensing positioning system, including: a sensing optical path; a control terminal; a light source module, used to output front-end optical signals; a front-end optical processing module, used to process the front-end optical signals output by the light source module. Generate interference light signals; the back-end optical processing module is used to process the interference light signals sent by the sensing optical path and modulate them into back-end optical signals, and then transmit them to the front-end optical proce...
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The invention relates to the technical field of communication, in particular to a long-distance high-precision optical fiber interference sensing and positioning system, which comprises a sensing optical path; a control terminal; a light source module; a front-end optical processing module; a back-end optical processing module; a photoelectric conversion module; a digital signal acquisition module; and an MCU central processing module; the control terminal is provided with a signal processing and positioning device used for calculating positioning information of the positioning sensing signals. According to the invention, the safety problem of an ultra-long-distance optical cable can be solved, alarm information can be timely sent out through vibration positioning for an intrusion event, the problem of occupation of an optical cable channel can also be solved, and the utilization efficiency of the optical cable is improved through a wavelength division multiplexing technology.
Description
technical field [0001] The invention relates to the technical field of communication, in particular to a long-distance and high-precision optical fiber interference sensing positioning system. Background technique [0002] With the rapid development of the communication industry in the world, the safety of communication optical cables has attracted more and more attention, especially the ultra-long-distance optical cables, such as the safety of submarine optical cables and the safety of national long-distance special line optical cables. Submarine optical cables and dedicated optical cables have extremely long distances, and it is impossible to report to the police and locate them in time when an intrusion occurs. How to quickly and accurately implement anti-theft on ultra-long-distance optical fiber lines is a complex project. [0003] The existing optical fiber vibration positioning anti-theft technology can be applied to a length of no more than 200 kilometers, and gener...
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IPC IPC(8): H04B10/07H04B10/85H04B10/079H04B10/25H04J14/02
CPCH04B10/85H04B10/079H04B10/0795H04J14/0202H04B10/25891
Inventor 王超贾波
Owner GUANGDONG FUAN TECH DEV