Multi-core optical fiber sensing assembly and multi-core optical fiber sensing system

Abstract

The invention discloses a multi-core optical fiber sensing assembly and a multi-core optical fiber sensing system, which are characterized in that the front end of a multi-core optical fiber is ground to form a transmitting and receiving part, and an oblique conical surface surrounding the axis of the multi-core optical fiber is formed around the transmitting and receiving part, so that the axis and the oblique conical surface generate interference respectively, and the front end of the transmitting and receiving part is a tip or a vertical surface. When the assembly and the system are used, the transmitting and receiving part is aligned with a reflecting mirror, the rear end of the multi-core optical fiber sensing assembly is connected with an optical fiber coupler, then the optical fiber coupler is combined with a spectrograph and a light source, and when the multi-core optical fiber is deflected and bent by a specific angle, the multi-core optical fiber is reflected back to the transmitting and receiving part by the reflecting mirror, and the wavelength drift change of the reflected light spectrum received and displayed by the spectrum device is used for reversely deducing the deflection bending angle of a to-be-measured object according to the wavelength drift change of the reflected light in the subsequent sensing of the to-be-measured object.

Description

technical field [0001] The invention relates to an optical component for measuring the state change of an object, in particular to a multi-core optical fiber sensing component and a multi-core optical fiber sensing system for measuring the change of the deflection angle at one end of the object. Background technique [0002] The existing photoelectric system for measuring the deflection angle of the end of the cantilever beam is based on separate transmitters and receivers for measurement. After the transmitter sends light waves to the cantilever beam, the receiver receives light waves reflected by the surface of the cantilever beam. The reflected light, the deflection angle of the cantilever beam is deduced from the wavelength shift of the reflected light. [0003] The above-mentioned system for measuring the cantilever beam requires two separate sensors at the transmitting end and the receiving end to emit light waves and receive reflected light, so the setup for measuring...

AI Technical Summary

Problems solved by technology

[0003] The above-mentioned system for measuring the cantilever beam requires two separate sensors at the transmitting end and the receiving end to emit light waves and receive reflected light, so the setup for measuring the deflection angle of the cantilever beam is cumbersome and requires two sensors Also makes setting up the system more expensive

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