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Journal of Lightwave Technology

Journal of Lightwave Technology

| A JOINT IEEE/OSA PUBLICATION

  • Vol. 18, Iss. 8 — Aug. 1, 2000
  • pp: 1101–

Fiber Bragg Grating Interrogation and Multiplexing with a 3 3 Coupler and a Scanning Filter

Gregg A. Johnson, Michael D. Todd, Bryan L. Althouse, and C. C. Chang

Journal of Lightwave Technology, Vol. 18, Issue 8, pp. 1101- (2000)


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Abstract

We present a new technique for fiber Bragg grating (FBG) sensor interrogation and multiplexing. The technique combines a scanning bandpass filter used to multiplex by wavelength multiple gratings in a single fiber,and an unbalanced Mach-Zehnder fiber interferometer made with a 3 3 coupler to detect strain-induced wavelength shifts. A demonstration system interrogates four gratings in a single fiber at a sampling rate up to 20 kHz, with a noise floor measured at less than 10 n/Hz above 0.1 Hz.

[IEEE ]

Citation
Gregg A. Johnson, Michael D. Todd, Bryan L. Althouse, and C. C. Chang, "Fiber Bragg Grating Interrogation and Multiplexing with a 3 3 Coupler and a Scanning Filter," J. Lightwave Technol. 18, 1101- (2000)
http://www.opticsinfobase.org/jlt/abstract.cfm?URI=jlt-18-8-1101

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