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

Pengfei Wang, Yuliya Semenova, Qiang Wu, Gerald Farrell

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

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.

Original languageEnglish
Title of host publication20th International Conference on Optical Fibre Sensors
DOIs
Publication statusPublished - 2009
Event20th International Conference on Optical Fibre Sensors - Edinburgh, United Kingdom
Duration: 5 Oct 20099 Oct 2009

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume7503
ISSN (Print)0277-786X

Conference

Conference20th International Conference on Optical Fibre Sensors
Country/TerritoryUnited Kingdom
CityEdinburgh
Period5/10/099/10/09

Keywords

  • Displacement sensor
  • Macrobending loss
  • Ratiometric
  • Singlemode fiber

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