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Proceedings Paper

The tension sensor of Photonic Crystal Fiber based on core-offset splicing and waist-enlarged fiber taper
Author(s): Guangwei Fu; Qifeng Li; Yunpu Li; Jiandong Yang; Xinghu Fu; Weihong Bi; Yanjun Li
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Paper Abstract

A tension sensor of Photonic Crystal Fiber(PCF) is presented based on core-offset splicing and waist-enlarged fiber taper. The tension response characteristics of the sensor are studied experimentally. To analyzing the modal interference, many samples with different PCF lengths between the two splicing areas, different core-offset distances and different waist-enlarged fiber taper diameters are fabricated and tested. When the tension range is 0 to 4000με, the results show that the spectrum is blue shift with the increasing of the axial tension. The sensitivity is-2.1 pm/με. The experimental results show that the tension sensitivity can be not influenced by the PCF lengths, the core-offset distances.The waist-enlarged fiber taper diameters and the tension sensor is very sensitive to axial tension and the relationship between the wavelength shift and tension is linearity. To determine the number of the interfering modes, the transmission spectra of these sensor is transformed by the fast fourier transform (FFT) method. There are several peaks in the spatial frequency spectra at these sensors. Only one cladding mode is dominantly excited, while the other cladding modes are weak. The spatial frequency is proportional to the differential mode group index. Compared with the traditional fiber sensor, this sensor has some advantages including the easily fabricated, simple structure and high sensitivity. It can be used in industrial production, building monitoring, aerospace and other fields.

Paper Details

Date Published: 25 October 2016
PDF: 10 pages
Proc. SPIE 10158, Optical Communication, Optical Fiber Sensors, and Optical Memories for Big Data Storage, 101581F (25 October 2016); doi: 10.1117/12.2247399
Show Author Affiliations
Guangwei Fu, Yanshan Univ. (China)
Qifeng Li, Yanshan Univ. (China)
Yunpu Li, Yanshan Univ. (China)
Jiandong Yang, Yanshan Univ. (China)
Xinghu Fu, Yanshan Univ. (China)
Weihong Bi, Yanshan Univ. (China)
Yanjun Li, Henan Univ. of Technology (China)

Published in SPIE Proceedings Vol. 10158:
Optical Communication, Optical Fiber Sensors, and Optical Memories for Big Data Storage

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