Optical fiber fault location device and location method based on chaotic visible laser

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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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 caused by the laying and bending of the optical fiber and the actual location of the fault point, and provides a method based on chaos and visible Laser fiber optic fault location device and location method thereof

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