Influence of strain and pressure to the effective refractive index of the fundamental mode of hollow-core photonic bandgap fibers

M. Pang, H. F. Xuan, J. Ju, Wei Jin

Research output: Journal article publicationJournal articleAcademic researchpeer-review

28 Citations (Scopus)

Abstract

We investigate the phase sensitivity of the fundamental mode of hollow-core photonic bandgap fibers to strain and acoustic pressure. A theoretical model is constructed to analyze the effect of axial strain and acoustic pressure on the effective refractive index of the fundamental mode. Simulation shows that, for the commercial HC-1550-02 fiber, the contribution of mode-index variation to the overall phase sensitivities to axial strain and acoustic pressure are respectively ∼-2% and ∼-17%. The calculated normalized phase-sensitivities of the HC-1550-02 fiber to strain and acoustic pressure are respectively 1 ε-1 and -331.6 dB re μPa-1 without considering mode-index variation, and 0.9797 ε-1 and -333.1 dB re μPa-1 when mode-index variation is included in the calculation. The latter matches better with the experimentally measured results.
Original languageEnglish
Pages (from-to)14041-14055
Number of pages15
JournalOptics Express
Volume18
Issue number13
DOIs
Publication statusPublished - 21 Jun 2010

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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