Bend and index insensitive long period grating in progressive three layered optical fibre

Abstract

A long period fibre grating written in a progressive three-layered optical fibre is shown to exhibit an attenuation band that has a very low bending sensitivity (5.1×10 –2 nm m) compared to normal step-index fibre, and is also insensitive to changes in the refractive index of the surrounding medium. Applications to sensing and telecommunications are discussed.

Uncontrolled Keywords: long period fibre grating, progressive three-layered optical fibre, attenuation band, bending sensitivity, refractive index
Published Date: 2003-03
Authors: Allsop, Thomas D.P.
Webb, David J.
Bennion, Ian

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