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

Seongmin Ju; Seongmook Jeong; Youngwoong Kim; Myoung-Jin Jang; Onyu Kim; Won-Taek Han

doi:10.1117/12.2026781

20 May 2013 Optical fiber bend sensor based on fiber Bragg grating in germano-silicate glass optical fiber with depressed-index structure

Seongmin Ju, Seongmook Jeong, Youngwoong Kim, Myoung-Jin Jang, Onyu Kim, Won-Taek Han

Author Affiliations +

Proceedings Volume 8794, Fifth European Workshop on Optical Fibre Sensors; 87942G (2013) https://doi.org/10.1117/12.2026781
Event: Fifth European Workshop on Optical Fibre Sensors, 2013, Krakow, Poland

Abstract

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.

Citation Download Citation

Seongmin Ju, Seongmook Jeong, Youngwoong Kim, Myoung-Jin Jang, Onyu Kim, and Won-Taek Han "Optical fiber bend sensor based on fiber Bragg grating in germano-silicate glass optical fiber with depressed-index structure", Proc. SPIE 8794, Fifth European Workshop on Optical Fibre Sensors, 87942G (20 May 2013); https://doi.org/10.1117/12.2026781

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