Opt Express. 2017 May 29;25(11):12216-12221. doi: 10.1364/OE.25.012216.

Analysis of phase sensitivity to longitudinal strain in microstructured optical fibers.

Optics express

Tadeusz Tenderenda, Lukasz Szostkiewicz, Tomasz Stanczyk, Beata Bienkowska, Daniel Kunicki, Michal Murawski, Pawel Mergo, Ryszard Piramidowicz, Tomasz Nasilowski

PMID: 28786580 DOI: 10.1364/OE.25.012216

Abstract

We investigate the influence of air holes on phase sensitivity in microstructured optical fibers to longitudinal strain. According to the numerical simulations performed, large air holes in close proximity to a fiber core introduce significant compression stress to the core, which results in an increase in the effective refractive index sensitivity to longitudinal strain. The theoretical investigation is verified by an experiment performed on four fibers drawn from the same preform and differentiated by air hole diameter. We show that introducing properly designed air holes can lead to a considerable increase in normalized effective refractive index sensitivity to axial strain from -0.21 ε

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• Journal Article