ARROW@DIT

Title

A Simple Ultrasensitive Displacement Sensor Based on a High Bend Loss Single-Mode Fibre and a Ratiometric Measurement System

Authors

Pengfei Wang, Dublin Institute of TechnologyFollow
Gilberto Brambilla, University of Southampton
Yuliya Semenova, Dublin Institute of TechnologyFollow
Qiang Wu, Dublin Institute of TechnologyFollow
Gerald Farrell, Dublin Institute of TechnologyFollow

Document Type

Article

Rights

This item is available under a Creative Commons License for non-commercial use only

Disciplines

Electrical and electronic engineering, Communication engineering and systems

Publication Details

Journal of Optics, Vol.13, 7, 2011, article no. 075402.

DOI: 10.1088/2040-8978/13/7/075402

Abstract

An all-fibre displacement sensor with a simple configuration and capable of monitoring sub-50 nm displacements is proposed and investigated experimentally. The proposed fibre displacement sensor consists of a half-loop structure of bare high bend loss single-mode fibre 1060XP and a ratiometric power interrogation system. By measuring the change in transmission ratio in the ratiometric system, a change in displacement can be measured. The displacement sensor is sensitive to temperature and an experimental investigation of this sensitivity is presented. It is found that the peak shift response has a linear variation with temperature; therefore, temperature dependence can be mitigated by a suitable displacement correction process. The proposed macrobending fibre based displacement sensor benefits from simplicity and low cost and achieves a comparable resolution as compared with other conventional fibre optic sensors.

Recommended Citation

Wang, P., Brambilla, G., Semenova, Y., Wu, Q., Farrell, G.: A Simple Ultrasensitive Displacement Sensor Based on a High Bend Loss Single-Mode Fibre and a Ratiometric Measurement System. Journal of Optics, Vol.13, 7, 2011, article no. 075402. DOI: 10.1088/2040-8978/13/7/075402