Chaotic visible laser-based optical fiber fault positioning device and positioning method thereof

An optical fiber fault and locating device technology, which is applied to measurement devices, electromagnetic wave re-radiation, electromagnetic wave transmission systems, etc., can solve the problem of difficulty in determining the location of the fault point, and achieve the effect of simplifying the measuring device, simple implementation process, and simple device structure.

Active Publication Date: 2012-10-17
TAIYUAN UNIV OF TECH
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Problems solved by technology

[0003] Based on the above prior art, the present invention solves the problem that the location of the fault point is difficult to determine due to the discrepancy between the length measurement and location cau

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  • Chaotic visible laser-based optical fiber fault positioning device and positioning method thereof
  • Chaotic visible laser-based optical fiber fault positioning device and positioning method thereof
  • Chaotic visible laser-based optical fiber fault positioning device and positioning method thereof

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[0024] Example 2

[0025] Implementation of the present invention is a method for locating the optical fiber fault locating device based on chaotic visible laser in embodiment 1: the chaotic visible light signal is divided into the detection signal I and the reference signal II through the optical fiber coupler 2, and the reference signal is reflected by the optical fiber fault point 11. The latter echo signal enters the signal processing device 9 for cross-correlation processing. The principle of cross-correlation processing to measure the propagation time of light in the optical fiber is: suppose that the chaotic laser generated by the chaotic visible laser generator conforms to the characteristics of the non-periodic function f(t) , The chaotic light I and the chaotic light II divided by the fiber coupler conform to the characteristics of the functions k*f(t) and (1-k)f(t) respectively. The chaotic light I as the probe light is reflected by the fiber fault point The light sati...

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Abstract

The invention discloses a chaotic visible laser-based optical fiber fault positioning device and a positioning method thereof. The positioning device comprises a chaotic visible laser emitting device, an optical fiber coupler, an optical circulator, a photoelectric detector, an A/D (Analog/Digital) converter, a signal processing device and a display device. Chaotic visible laser signals emitted by the chaotic visible laser emitting device generate obvious visible bright spots at a fault point (11) of an optical fiber line to be tested (4) due to transmission, and the accurate positioning of the fault point can be realized by finding the visible bright spots in a range of the distance between a detection point and the fault point (11). According to the positioning device and the positioning method, the chaotic visible laser is used as a detection light source, and a chaos-related fault point detection technology and a visible optical fiber fault point detection technology are integrated, so that the fast and accurate detection and positioning of the optical fiber fault point is realized, and the problem that the optical fiber fault point is easily measured and not easily positioned is solved.

Description

technical field [0001] The invention relates to a laser distance measuring device and a distance measuring method thereof, in particular to a visual high-precision optical fiber fault location device and a location method thereof based on chaotic visible laser. Background technique [0002] With the wide application of optical fiber in the field of communication and sensing, optical fiber fault detection device has become an indispensable tool in optical fiber construction detection and fault maintenance. At present, commonly used optical fiber fault detection technologies include: red light optical fiber fault detection technology [CN201269801] and optical time domain reflection technology [CN1681227]. Among them, the red light optical fiber fault detection technology makes full use of the visible characteristics of red light, and realizes the precise positioning of the optical fiber fault point by generating visible bright spots through the transmission of red light at the...

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Application Information

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IPC IPC(8): H04B10/08H04B10/12G01S7/497G01S17/08
Inventor 王云才王安邦张丽李凯
Owner TAIYUAN UNIV OF TECH
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