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/µe.
Bibliographical noteThis paper is a postprint of a paper submitted to and accepted for publication in Electronics Letters and is subject to Institution of Engineering and Technology Copyright. The copy of record is available at IET Digital Library.
- 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