Optical fiber torsion sensor based on dumbbell-shaped structure

• Main Authors: JIN WA, FU XINGHU, ZHOU JIAHAO, WANG JIAQI, BI WEIHONG, FU GUANGWEI
• Format: Patent
• Language: Chinese; English
• Published: 17.11.2023
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS; MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS; PHYSICS; TESTING

The utility model discloses an optical fiber torsion sensor based on a dumbbell-shaped structure. The optical fiber torsion sensor comprises an incident optical fiber, a non-circular symmetrical optical fiber and an emergent optical fiber, any end of the incident optical fiber is of a first spherical structure; the first spherical structure is connected with one end of the non-circular symmetrical optical fiber; any end of the emergent optical fiber is of a second spherical structure; the other end of the non-circular symmetrical optical fiber is connected with the second spherical structure, and the non-circular symmetrical optical fiber comprises a second fiber core arranged in the center of the non-circular symmetrical optical fiber, a third fiber core which is a certain distance away from the center of the non-circular symmetrical optical fiber, and a second wrapping layer on the outer layer. The optical fiber has the advantages that the structure is novel and compact, the sensitivity is high, the rotatio