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
)
Date of Publication: 27 Nov. 2003