A macrobending fiber based micro-displacement sensor utilizing whispering-gallery modes

Pengfei Wang; Yuliya Semenova; Qiang Wu; Gerald Farrell

doi:10.1117/12.835397

5 October 2009 A macrobending fiber based micro-displacement sensor utilizing whispering-gallery modes

Pengfei Wang, Yuliya Semenova, Qiang Wu, Gerald Farrell

Proceedings Volume 7503, 20th International Conference on Optical Fibre Sensors; 75033O (2009) https://doi.org/10.1117/12.835397
Event: 20th International Conference on Optical Fibre Sensors, 2009, Edinburgh, United Kingdom

Abstract

An all-fiber micron displacement sensor with a simple configuration is proposed and investigated experimentally. The proposed fiber displacement sensor consists of a half-loop structure of bare high-bend loss singlemode fiber-1060XP, employing the well-known whispering gallery mode (WGM) effect. A ratiometric power measurement system for interrogating the proposed sensor is also presented. By measuring the change in ratio of bend loss in the ratiometric system, a change in displacement can be measured assuming the ratiometric system is calibrated. The proposed macrobending fiber based displacement sensor achieves a higher resolution (less than 100 nm of displacement) than other conventional fiber-optic sensors and also benefits from simplicity.

Citation Download Citation

Pengfei Wang, Yuliya Semenova, Qiang Wu, and Gerald Farrell "A macrobending fiber based micro-displacement sensor utilizing whispering-gallery modes", Proc. SPIE 7503, 20th International Conference on Optical Fibre Sensors, 75033O (5 October 2009); https://doi.org/10.1117/12.835397

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