Title :
Temperature-insensitive long period grating sensors in photonic crystal fibre
Author :
Dobb, H. ; Kalli, K. ; Webb, D.J.
Author_Institution :
Photonics Res. Group, Aston Univ., Birmingham, UK
fDate :
5/27/2004 12:00:00 AM
Abstract :
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.
Keywords :
diffraction gratings; fibre optic sensors; optical fibre fabrication; photonic crystals; bend sensitivity; periodic electric arc discharge; photonic crystal fibre; sensing characteristics; strain sensitivity; temperature insensitive long period grating sensors;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20040433
