Fibre laser torsion sensor system using an excessively tilted fibre grating and low-cost time domain demodulation

Mou, Chengbo, Zhou, Kaiming, Suo, Rui, Zhang, Lin and Bennion, Ian (2009). Fibre laser torsion sensor system using an excessively tilted fibre grating and low-cost time domain demodulation. IN: 20th international conference on optical fibre sensors. Jones, Julian D.C.; Culshaw, Brian; Ecke, Wolfgang; López-Higuera, José M. and Willsch, Reinhardt (eds) SPIE proceedings, 7503 . GBR: SPIE.

Abstract

In this paper, we report a simple fibre laser torsion sensor system using an intracavity tilted fibre grating as a torsion encoded loss filter. When the grating is subjected to twist, it induces loss to the cavity, thus affecting the laser oscillation build-up time. By measuring the build-up time, both twist direction and angle on the grating can be monitored. Using a low-cost photodiode and a two-channel digital oscilloscope, we have characterised the torsion sensing capability of this fibre laser system and obtained a torsion sensitivity of ~412µs/(rad/m) in the dynamic range from -150° to +150°.

Publication DOI: https://doi.org/10.1117/12.833595
Divisions: Engineering & Applied Sciences > Electrical, Electronic & Power Engineering
Engineering & Applied Sciences > Aston Institute of Photonics Technology
Additional Information: Chengbo Mou ; Kaiming Zhou ; Rui Suo ; Lin Zhang and Ian Bennion, "Fibre laser torsion sensor system using an excessively tilted fibre grating and low-cost time domain demodulation", Proc. SPIE 7503, 20th International Conference on Optical Fibre Sensors, 75033E (October 05, 2009); doi:10.1117/12.833595; http://dx.doi.org/10.1117/12.833595. Copyright 2009 Society of Photo-Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited. http://dx.doi.org/10.1117/12.833595
Event Title: 20th International Conference on Optical Fibre Sensors
Event Type: Other
Event Dates: 2009-10-05 - 2009-10-09
Uncontrolled Keywords: torsion sensor,fibre laser,tilted fibre grating,photonics,Computer Science Applications,Electrical and Electronic Engineering,Electronic, Optical and Magnetic Materials,Applied Mathematics,Condensed Matter Physics
Full Text Link:
Related URLs: http://www.scop ... tnerID=8YFLogxK (Scopus URL)
http://proceedi ... ticleid=1342493 (Publisher URL)
Published Date: 2009-10-05
Authors: Mou, Chengbo ( 0000-0001-6107-3439)
Zhou, Kaiming ( 0000-0002-6011-1912)
Suo, Rui
Zhang, Lin ( 0000-0002-1691-5577)
Bennion, Ian

Download

[img]

Version: Published Version

| Preview

Export / Share Citation


Statistics

Additional statistics for this record