Excitation of higher-order modes in optofluidic photonic crystal fiber.
Weber, Marius A
Frosz, Michael H
Russell, Philip St J
Euser, Tijmen G
The Optical Society
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Ruskuc, A., Koehler, P., Weber, M. A., Andres-Arroyo, A., Frosz, M. H., Russell, P. S. J., & Euser, T. G. (2018). Excitation of higher-order modes in optofluidic photonic crystal fiber.. Opt Express, 26 (23), 30245-30254. https://doi.org/10.1364/OE.26.030245
Higher-order modes up to LP33 are controllably excited in water-filled kagomé- and bandgap-style hollow-core photonic crystal fibers (HC-PCF). A spatial light modulator is used to create amplitude and phase distributions that closely match those of the fiber modes, resulting in typical launch efficiencies of 10-20% into the liquid-filled core. Modes, excited across the visible wavelength range, closely resemble those observed in air-filled kagomé HC-PCF and match numerical simulations. Mode indices are obtained by launching plane-waves at specific angles onto the fiber input-face and comparing the resulting intensity pattern to that of a particular mode. These results provide a framework for spatially-resolved sensing in HC-PCF microreactors and fiber-based optical manipulation.
T.G.E. acknowledges the support from the Winton Programme for the Physics of Sustainability and the Isaac Newton Trust. P.K. acknowledges the Cambridge NanoDTC (EPSRC Grant EP/L015978/1).
Engineering and Physical Sciences Research Council (EP/L015978/1)
External DOI: https://doi.org/10.1364/OE.26.030245
This record's URL: https://www.repository.cam.ac.uk/handle/1810/286681
Attribution 4.0 International
Licence URL: https://creativecommons.org/licenses/by/4.0/