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

• Main Authors: LI YUCHENG, LUO LIJU, CHEN NANGUANG, ZHANG LIQIANG, TIAN ZHEN, WANG DAQIN
• Format: Patent
• Language: Chinese; English
• Published: 07.05.2021
• Subjects: MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC ORINFRASONIC WAVES; MEASURING; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS; MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS; PHYSICS; TESTING

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 p