Differential strain sensitivity of higher order cladding modes in weakly tilted fiber Bragg gratings

Chengkun Chen; Lingyun Xiong; Christophe Caucheteur; Patrice Mégret; Jacques Albert

doi:10.1117/12.686314

10 October 2006 Differential strain sensitivity of higher order cladding modes in weakly tilted fiber Bragg gratings

Chengkun Chen, Lingyun Xiong, Christophe Caucheteur, Patrice Mégret, Jacques Albert

Proceedings Volume 6379, Photonic Applications for Aerospace, Transportation, and Harsh Environments; 63790E (2006) https://doi.org/10.1117/12.686314
Event: Optics East 2006, 2006, Boston, Massachusetts, United States

Abstract

In this paper, we present the differential strain sensitivity characteristics of core and cladding modes in weakly TFBG. Both experiment and analysis results are presented, and they are well matched. The results show that there are three different strain sensitivity regions for cladding mode resonances: the short wavelength region, the ghost mode region and the nearly linear sensitivity change region between them. By monitoring the cladding modes with different strain sensitivities, and noting that the different cladding modes have similar temperature sensitivities, weakly TFBG are attractive candidates for more accurate temperature-independent strain sensors.

Citation Download Citation

Chengkun Chen, Lingyun Xiong, Christophe Caucheteur, Patrice Mégret, and Jacques Albert "Differential strain sensitivity of higher order cladding modes in weakly tilted fiber Bragg gratings", Proc. SPIE 6379, Photonic Applications for Aerospace, Transportation, and Harsh Environments, 63790E (10 October 2006); https://doi.org/10.1117/12.686314

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