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

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4 Author(s)
Wojtek J. Bock ; Photonics Res. Center, Univ. du Quebec en Outaouais, Outaouais, QC, Canada ; Tinko A. Eftimov ; Predrag Mikulic ; Jiahua Chen

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.

Published in:

Journal of Lightwave Technology  (Volume:27 ,  Issue: 17 )