Title :
Measurement of bending curvature using bandpass filters based on phase-shifted long-period fiber gratings
Author :
Young-Geun Han ; Won-Taek Han ; Un-Chul Paek ; Youngjoo Chung
Author_Institution :
Dept. of Inf. & Commun., Kwangju Inst. of Sci. & Technol., South Korea
Abstract :
We will discuss fabrication of phase-shifted long-period fiber gratings and the spectral evolution with UV post-exposure and different initial coupling strength. Application of second saturated and phase-shifted LPFGs to bending curvature sensing will be presented.
Keywords :
band-pass filters; bending; curvature measurement; diffraction gratings; fibre optic sensors; optical fibre filters; UV post-exposure; bandpass filter; bending curvature measurement; coupling strength; fabrication method; fiber optic sensor; phase-shifted long-period fiber grating; second saturated grating; spectral evolution; Band pass filters; Capacitive sensors; Couplings; Fiber gratings; Optical device fabrication; Optical fiber communication; Phase measurement; Refractive index; Resonance; Temperature sensors;
Conference_Titel :
Optical Fiber Sensors Conference Technical Digest, 2002. Ofs 2002, 15th
Conference_Location :
Portland, OR, USA
Print_ISBN :
0-7803-7289-1
DOI :
10.1109/OFS.2002.1000522
