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Novel frequency-agile interrogating system for fiber Bragg grating sensors
- Source :
- SPIE Proceedings.
- Publication Year :
- 1993
- Publisher :
- SPIE, 1993.
-
Abstract
- We have demonstrated a new frequency-agile system for the interrogation of in-fibre Bragg grating sensors. The scheme involves frequency shift keying (FSK) of the RF drive to an acousto-optic tunable filter (AOTF) to track the wavelength shifts of a Bragg grating. Theoretical studies to derive the optimum frequency deviation for achieving maximum sensitivity are given, and experimental results are presented for temperature measurement. This technique is capable of rapid, random access and very wide tuning range, showing the potential for interrogating multiplexed arrays of Bragg-grating-based sensors
Details
- ISSN :
- 0277786X
- Database :
- OpenAIRE
- Journal :
- SPIE Proceedings
- Accession number :
- edsair.doi...........0f129f9d3b2e1d139f5a0a557e381016
- Full Text :
- https://doi.org/10.1117/12.165920