Self-mixing-based demodulation technique for dynamic fiber Bragg grating strain sensors

H.C. Seat, Y. Wang, W. Hu, T. Bosch, Xianfeng F. Chen, Lin Zhang

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

We report a novel demodulation scheme for the detection of small Bragg wavelength shifts in a fiber Bragg grating strain sensor by exploiting the optical feedback reflected from the grating structure back into a 1310 nm laser diode integrating a photodiode. The dynamic strain generated by a mechanical vibrator is applied transversely to the fiber Bragg grating and the desired longitudinal strain values inferred from the detected sawtooth-like optical feedback signals. Preliminary results demonstrate the feasibility of this demodulation technique for strain measurement which could be further extended to fiber Bragg grating-based sensors for the detection of different measurands in general.
Original languageEnglish
Title of host publicationProceedings of the IEEE : Instrumentation and Measurement Technology Conference, 2006. IMTC 2006
PublisherIEEE
Pages2060-2065
Number of pages6
ISBN (Print)0780393597
DOIs
Publication statusPublished - 24 Apr 2006

Bibliographical note

Instrumentation and Measurement Technology Conference, 2006 (IMTC 2006), 24-27 April 2006, Sorrento (IT).

Keywords

  • Fiber Bragg grating sensor
  • dynamic strain measurement
  • optical feedback interferometry
  • self-mixing

Fingerprint Dive into the research topics of 'Self-mixing-based demodulation technique for dynamic fiber Bragg grating strain sensors'. Together they form a unique fingerprint.

  • Cite this

    Seat, H. C., Wang, Y., Hu, W., Bosch, T., Chen, X. F., & Zhang, L. (2006). Self-mixing-based demodulation technique for dynamic fiber Bragg grating strain sensors. In Proceedings of the IEEE : Instrumentation and Measurement Technology Conference, 2006. IMTC 2006 (pp. 2060-2065). IEEE. https://doi.org/10.1109/IMTC.2006.328456