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Extended range interrogation of wavelength division multiplexed fibre Bragg grating sensors using arrayed waveguide grating

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3 Author(s)
Norman, D.C.C. ; Photonics Res. Group, Aston Univ., Birmingham, UK ; Webb, D.J. ; Pechstedt, R.D.

A technique for interrogating multiplexed fibre Bragg grating (FBG) sensors using an arrayed waveguide grating (AWG) is described. The approach considerably extends the sensing range from that achieved previously, while providing a strain resolution of 17nε/√Hz at 30 Hz.

Published in:

Electronics Letters  (Volume:39 ,  Issue: 24 )