A comparison of the sensing characteristics of long period gratings written in three different types of fiber

This paper compares the environmental sensing behaviour of long period gratings written in three fibers with different refractive index profiles: step, W and a progressive three layered fiber. The measurands considered are temperature, refractive index, axial strain and bending, and the spectral behaviour of individual attenuation bands were observed and, where possible, compared to theoretical predictions. Significant differences in the behaviour of the three fiber types were found.

[1]  Alan D. Kersey,et al.  Analysis of the response of long period fiber gratings to external index of refraction , 1998 .

[2]  C. Askins,et al.  Interferometric method for concurrent measurement of thermo-optic and thermal expansion coefficients. , 1991, Applied optics.

[3]  Robert S. Windeler,et al.  External refractive index insensitive air-clad long period fibre grating , 1999 .

[4]  John E. Sipe,et al.  Long-period fiber gratings as band-rejection filters , 1995 .

[5]  Vikram Bhatia,et al.  Properties and sensing applications of long-period gratings , 1996 .

[6]  John M. Jewell,et al.  Thermooptic Coefficients of Some Standard Reference Material Glasses , 1991 .

[7]  A. Vengsarkar,et al.  Optical fiber long-period grating sensors. , 1996, Optics letters.

[8]  Ian Bennion,et al.  Detection of organic aromatic compounds in paraffin by a long-period fiber grating optical sensor with optimized sensitivity , 2001 .

[9]  M. Adams,et al.  Introduction to Optical Fibres , 1990 .

[10]  C. D. Su,et al.  Linewidth broadening of Er-doped superfluorescent fibre source using long-period grating , 1999 .

[11]  J. Cruz,et al.  Long Period Gratings Formed in Depressed Cladding Fibres , 1997, Bragg Gratings, Photosensitivity, and Poling in Glass Fibers and Waveguides: Applications and Fundamentals.

[12]  Se Yoon Kim,et al.  Temperature insensitive long-period fibre gratings , 1999 .

[13]  David J. Webb,et al.  Investigations of the spectral sensitivity of long period gratings fabricated in three-layered optical fiber , 2003 .

[14]  C Yeh,et al.  Computing the propagation characteristics of radially stratified fibers: an efficient method. , 1977, Applied optics.

[15]  S. Yin,et al.  A highly sensitive long period grating based tunable filter using a unique double-cladding layer structure , 2001 .

[16]  Won-Taek Han,et al.  Measurement method for profiling the residual stress and the strain-optic coefficient of an optical fiber. , 2002, Applied optics.

[17]  R. Claus,et al.  Temperature-insensitive and strain-insensitive long-period grating sensors for smart structures , 1997 .

[18]  V. Bhatia.  Applications of long-period gratings to single and multi-parameter sensing. , 1999, Optics express.

[19]  Charles Tsao,et al.  Optical Fibre Waveguide Analysis , 1992 .

[20]  Turan Erdogan,et al.  Cladding-mode resonances in short- and long-period fiber grating filters , 2000 .

[21]  Ian Bennion,et al.  Room-temperature operation of widely tunable loss filter , 2001 .

[22]  Mitsunobu Miyagi,et al.  An approximate formula for describing dispersion properties of optical dielectric slab and fiber waveguides , 1979 .