Title :
Highly Sensitive LPFG-Based Bending Sensor in W-Type Optical Fiber
Author :
Taghipour, Ata ; Janabi-Sharifi, Farrokh Taghipour ; Rostami, Ali
Author_Institution :
Dept. of Mech. & Ind. Eng., Ryerson Univ., Toronto, ON, Canada
Abstract :
Simulation results reveal that bending sensitivity of LPFG-based bending sensor in ordinary single-clad optical fiber is almost 15nm/m-1, while this quantity for LPFG-based bending sensor in double-clad W-type optical fiber reaches to 21nm/m-1. This 40% enhancement of bending sensitivity is related to more difference between cladding modes´ effective refractive indices in W-type optical fiber rather than ordinary single-clad optical fiber.
Keywords :
bending; diffraction gratings; fibre optic sensors; optical fibre cladding; refractive index; sensitivity; W-Type optical fiber; bending sensitivity; cladding mode effective refractive indices; double-clad W-type optical fiber; highly sensitive LPFG-based bending sensor; long period fibre grating; ordinary single-clad optical fiber; Fiber gratings; Finite element analysis; Modal analysis; Optical fiber sensors; Optical fibers; Refractive index; Sensitivity; LPFG-based bending sensor; W-type optical fiber; bending sensitivity;
Conference_Titel :
Optomechatronic Technologies (ISOT), 2014 International Symposium on
DOI :
10.1109/ISOT.2014.75
