An Inline Core-Cladding Intermodal Interferometer Using a Photonic Crystal Fiber

Author

Bock, Wojtek J. ; Eftimov, Tinko A. ; Mikulic, Predrag ; Chen, Jiahua

Author_Institution

Photonics Res. Center, Univ. du Quebec en Outaouais, Outaouais, QC, Canada

Volume

27

Issue

17

fYear

2009

Firstpage

3933

Lastpage

3939

Abstract

We propose a simple all-fiber structure based on intermodal interference between a core and a cladding mode of an endlessly single-mode photonic crystal fiber (PCF) section sandwiched between a lead-in and lead-out SMF-28 fiber. We have measured the intermodal dispersion and the polarization-dependent loss (PDL) of the structure. The sensitivities to strain, pressure, and temperature and external refractive index are studied. The interferometer is compared to an interferometer based on LP₀₁-LP₀₂ SMF-28 fiber and to a PCF-based tapered LPG.

Keywords

Mach-Zehnder interferometers; fibre optic sensors; holey fibres; optical fibre cladding; optical fibre dispersion; optical fibre losses; optical fibre polarisation; optical materials; photonic crystals; pressure sensors; refractive index; LP₀₁-LP₀₂ SMF-28 fiber; Mach-Zender interferometer; external refractive index; fiber-optic strain sensor; inline core-cladding intermodal interferometer; intermodal dispersion; lead-in SMF-28 fiber; lead-out SMF-28 fiber; polarization-dependent loss; pressure sensor; single-mode photonic crystal fiber; Fiber-optic strain and pressure sensors; Mach-Zender interferometers; intermodal interference; photonic crystal fibers; polarization-dependent loss (PDL);

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/JLT.2009.2021282

Filename

4838941