Integrated all-fiber current sensor

Abstract

The invention relates to an integrated all-fiber current sensor which comprises a laser, a 45-degree inclined fiber grating, a photoelectric detector, a sensing fiber and a light reflector, the laser is connected with the 45-degree inclined fiber grating, the 45-degree inclined fiber grating is connected with the sensing fiber, the sensing fiber is connected to the light reflector, and the light reflector is connected with the photoelectric detector. The photoelectric detector is arranged at the 45-degree inclined fiber bragg grating, incident light generated by the laser is changed into linearly polarized light after passing through the 45-degree inclined fiber bragg grating, and signal light is reflected by the light reflecting mirror after passing through the sensing fiber, then is radiated out of the fiber by the 45-degree inclined fiber bragg grating after passing through the sensing fiber, and is received by the photoelectric detector; the current is subjected to sensing measurement by measuring the change of the radiation light intensity. The problems that an existing optical fiber current sensor is high in cost and complex in system are solved.

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