Abstract
We experimentally demonstrated a highly sensitive twist sensor system based on a 45° and an 81° tilted fibre grating (TFG). The 81°-TFG has a set of dual-peaks that are due to the birefringence induced by its extremely tilted structure. When the 81°-TFG subjected to twist, the coupling to the two peaks would interchange from each other, providing a mechanism to measure and monitor the twist. We have investigated the performance of the sensor system by three interrogation methods (spectral, power-measurement and voltage-measurement). The experimental results clearly show that the 81°-TFG and the 45°-TFG could be combined forming a full fibre twist sensor system capable of not just measuring the magnitude but also recognising the direction of the applied twist.
| Original language | English |
|---|---|
| Title of host publication | 21st International Conference on Optical Fiber Sensors |
| Editors | Wojtek J. Bock, Jacques Albert, Xiaoyi Bao |
| Place of Publication | Bellingham, WA (US) |
| Publisher | Society of Photo-Optical Instrumentation Engineers (SPIE) |
| Number of pages | 4 |
| ISBN (Print) | 978-0-8194-8246-4 |
| DOIs | |
| Publication status | Published - 17 May 2011 |
| Event | 21st International Conference on Optical Fiber Sensors - Ottawa, ON, Canada Duration: 15 May 2011 → 19 May 2011 http://www.ofs21.org/ |
Publication series
| Name | SPIE Proceedings |
|---|---|
| Publisher | SPIE |
| Volume | 7753 |
| ISSN (Print) | 0277-786X |
| ISSN (Electronic) | 2410-9045 |
Conference
| Conference | 21st International Conference on Optical Fiber Sensors |
|---|---|
| Abbreviated title | OFS21 |
| Country/Territory | Canada |
| City | Ottawa, ON |
| Period | 15/05/11 → 19/05/11 |
| Internet address |
Bibliographical note
Zhijun Yan, Adedotun Adebayo, Kaiming Zhou, Lin Zhang and David Webb, "All-fibre twist sensor system based on 45° and 81° tilted fibre gratings", Proc. SPIE 7753, 77538E (2011). 21st International Conference on Optical Fiber Sensors (OFS21), 15-19 May 2011, Ottawa (CA).Copyright 2011 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.
DOI: http://dx.doi.org/10.1117/12.884845
Keywords
- highly sensitive twist sensor system
- 45°
- 81°
- tilted fibre grating
- TFG
- tilted structure
- sensor system
- full fibre twist sensor system
- magnitude
- direction
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