Open AccessAnalysis of phase sensitivity to longitudinal strain in microstructured optical fibers
Author(s) -
T. Tenderenda,
Łukasz Szostkiewicz,
Tomasz Stańczyk,
Beata Bienkowska,
Daniel Kunicki,
M. Murawski,
Paweł Mergo,
Ryszard Piramidowicz,
Tomasz Nasiłowski
Publication year - 2017
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.25.012216
Subject(s) - materials science , optics , refractive index , photonic crystal fiber , optical fiber , core (optical fiber) , sensitivity (control systems) , microstructured optical fiber , graded index fiber , phase (matter) , strain (injury) , fiber optic sensor , composite material , optoelectronics , physics , electronic engineering , quantum mechanics , engineering , medicine
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 -1 (for traditional single mode fiber) to -0.14 ε -1 .