Presentation + Paper
17 May 2022 Grating-assisted narrowband cladding mode excitation in photonic crystal fibers for surface refractometry
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Abstract
We report on highly reflective fiber Bragg gratings in photonic crystal fibers (PCF) that excite two types of cladding mode resonances. We consider two hexagonal lattice PCF structures with a similar air-filling fraction (0.4) but different lattice pitch values (2.5 and 3.6 μm). We demonstrate both experimentally and numerically that the lattice parameters of the microstructure influence the spectral location of the resonances and the spectral span that they occupy. For the PCF with the lattice pitch of 2.5 μm, we demonstrate its application for surface plasmon-enhanced refractometry of waterbased solutions with potential for biosensing applications.
Conference Presentation
© (2022) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Olga Rusyakina, Tigran Baghdasaryan, Karima Chah, Pawel Mergo, Krzysztof Poturaj, Hugo Thienpont, Christophe Caucheteur, Francis Berghmans, and Thomas Geernaert "Grating-assisted narrowband cladding mode excitation in photonic crystal fibers for surface refractometry", Proc. SPIE 12139, Optical Sensing and Detection VII, 121390Y (17 May 2022); https://doi.org/10.1117/12.2621143
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KEYWORDS
Cladding

Fiber Bragg gratings

Refractometry

Polarization

Photonic crystal fibers

Refractive index

Sensors

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