Hetero-core chirped fiber Bragg grating for cladding mode recoupling-based high sensitive bending measurement

An Sun; Zhishen Wu

doi:10.1117/1.OE.51.11.115008

5 November 2012 Hetero-core chirped fiber Bragg grating for cladding mode recoupling-based high sensitive bending measurement

An Sun, Zhishen Wu

Author Affiliations +

Optical Engineering, Vol. 51, Issue 11, 115008 (November 2012). https://doi.org/10.1117/1.OE.51.11.115008

Abstract

In this paper, a simple and practical method based on multimode fiber (MMF)-single mode chirped fiber Bragg grating (CFBG) structures for highly sensitive bending measurement is proposed. By employing the wide wavelength resonance of CFBG, enhanced backward cladding modes can be achieved through the coupling and recoupling between MMF and CFBG. Experiential results indicate that cladding modes with a large wavelength range can be effectively excited through the proposed sensor structure, and a comparatively highly sensitive and cost-effective bending measurement can be achieved by detecting deflection-induced intensity change of recoupled cladding modes.

Citation Download Citation

An Sun and Zhishen Wu "Hetero-core chirped fiber Bragg grating for cladding mode recoupling-based high sensitive bending measurement," Optical Engineering 51(11), 115008 (5 November 2012). https://doi.org/10.1117/1.OE.51.11.115008

Published: 5 November 2012

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