Investigations of the spectral sensitivity of long period gratings fabricated in three-layered optical fiber


Long period gratings (LPGs) were written into a progressive three-layered (PTL) monomode optical fiber. The spectral sensitivity was experimentally measured with respect to temperature and the surrounding refractive index, and compared with theoretical predictions. The behavior of the devices suggests that this type of fiber may be useful as a means of reducing the sensitivity of LPGs to the surrounding medium and for simultaneous temperature and refractive index sensing.

Uncontrolled Keywords: diffraction gratings, fibre optic sensors, optical fibre fabrication, refractive index measurement, sensitivity, temperature measurement, temperature sensors, indexing, long period fibre gratings fabrication, progressive three-layered monomode optical fiber, refractive index, refractive index sensing, simultaneous temperature sensing, spectral sensitivity, surrounding refractive index, temperature sensing, temperature sensitivity, three-layered optical fiber
Publication ISSN: 0733-8724
Last Modified: 23 Oct 2019 10:39
Date Deposited: 09 Dec 2010 11:01
Published Date: 2003-01
Authors: Allsop, Thomas D.P.
Webb, David J.
Bennion, Ian


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