Abstract
In this work, we present and demonstrate a novel sensor system for simultaneous measurement of strain and temperature through a unique combination of a long period grating (LPG) and a fibre laser based on a fibre Bragg grating (FBG). In order to achieve this, a new erbium doped fibre laser (EDFL) structure is created, showing an optical signal-to-noise ratio (OSNR) of 55 dB and a peak power measured on the OSA between -5 and 0 dBm. The strain and the temperature variation applied on the FBG and the LPG can be monitored through both the fibre laser wavelength shift and the change of the power level of a unique emission line, both showing a clear linear behaviour.
Original language | English |
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Title of host publication | 23rd International Conference on Optical Fibre Sensors |
Editors | José M. López-Higuera, Julian D. C. Jones, Manuel López-Amo, José L. Santos |
Place of Publication | Bellingham, WA |
Publisher | SPIE |
Pages | 1-4 |
Number of pages | 4 |
Volume | 9157 |
ISBN (Print) | 9781628411751 |
DOIs | |
Publication status | Published - 2014 |
Externally published | Yes |
Event | 23rd International Conference on Optical Fibre Sensors - Santander, Spain Duration: 2 Jun 2014 → 6 Jun 2014 |
Other
Other | 23rd International Conference on Optical Fibre Sensors |
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Country/Territory | Spain |
City | Santander |
Period | 2/06/14 → 6/06/14 |
Keywords
- Erbium lasers
- Fibre Bragg gratings
- Fibre lasers
- Long period gratings
- LPG coupling