论文信息 - Optical fiber bend sensor based on fiber Bragg grating in germano-silicate glass optical fiber with depressed-index structure

Optical fiber bend sensor based on fiber Bragg grating in germano-silicate glass optical fiber with depressed-index structure

An optical fiber bend sensor based on a fiber Bragg grating by using a germano-silicate glass optical fiber with depressed-index structure has been developed and its novel bend sensing characteristics was demonstrated. With the increase of bending, the transmission spectrum was linearly blue-shifted without change of optical transmission loss. Total blue-shift of the Bragg reflection wavelength upon bending in the radius of curvature from 20 m-1 to 133 m-1 was − 0.13 nm.

[1] I. Bennion,et al. Optical bend sensor based on measurement of resonance mode splitting of long-period fiber grating , 2000, IEEE Photonics Technology Letters.

[2] Heather Patrick,et al. Long period fibre gratings for structural bend sensing , 1998 .

[3] Dietrich Marcuse,et al. Field deformation and loss caused by curvature of optical fibers , 1976 .

[4] Won-Taek Han,et al. Single-mode optical fiber design with wide-band ultra low bending-loss for FTTH application. , 2008, Optics express.

[5] W. Han,et al. Enhanced Sensitivity of the FBG Temperature Sensor Based on the PbO-GeO$_{2}$ -SiO$_{2}$ Glass Optical Fiber , 2010, Journal of Lightwave Technology.

[6] Michael A. Davis,et al. Fiber grating sensors , 1997 .

[7] Heather Patrick,et al. Annealing of Bragg gratings in hydrogen‐loaded optical fiber , 1995 .

[8] Gia-Wei Chern,et al. Corrugated long-period fiber gratings as strain, torsion, and bending sensors , 2001 .

[9] K. Hill,et al. Photosensitivity in optical fiber waveguides: Application to reflection filter fabrication , 1978 .

[10] Tingyun Wang,et al. Temperature-Insensitivity Bending Sensor Based on Cladding-Mode Resonance of Special Optical Fiber , 2009 .