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Temperature-insensitive long period grating sensors in photonic crystal fibre

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3 Author(s)
Dobb, H. ; Photonics Res. Group, Aston Univ., Birmingham, UK ; Kalli, K. ; Webb, D.J.

A long period grating has been fabricated in endlessly single-mode photonic crystal fibre using a spatially-periodic electric arc discharge. The sensing characteristics of the grating have been studied and it was found to possess an insensitivity to temperature, a bend sensitivity of 3.7 nm · m and a strain sensitivity of -2.0 pm/με.

Published in:

Electronics Letters  (Volume:40 ,  Issue: 11 )