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A passive wavelength demodulation system for guided-wave Bragg grating sensors

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3 Author(s)
Melle, S.M. ; Inst. for Aerosp. Studies, Toronto Univ., Ont., Canada ; Liu, K. ; Measures, R.M.

A novel, passive, and self-referencing wavelength detection system (WDS) that measures the wavelength of the narrowband back-reflected spectrum of guided-wave Bragg gratings is described. This letter also reports on the use of such a detection system with fiber-optic Bragg gratings used as absolute strain sensors. The wavelength detection system demonstrated a 1% strain resolution of the total strain measurement range.<>

Published in:

Photonics Technology Letters, IEEE  (Volume:4 ,  Issue: 5 )