Highly nonlinear spiral shaped photonic crystal fiber in a Ga-Sb-S chalcogenide glass for nonlinear applications

Pooja Chauhan; Ajeet Kumar; Yogita Kalra; Than Singh Saini

doi:10.1117/12.2320901

4 September 2018 Highly nonlinear spiral shaped photonic crystal fiber in a Ga-Sb-S chalcogenide glass for nonlinear applications

Pooja Chauhan, Ajeet Kumar, Yogita Kalra, Than Singh Saini

Author Affiliations +

Proceedings Volume 10755, Photonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications XII; 1075510 (2018) https://doi.org/10.1117/12.2320901
Event: SPIE Optical Engineering + Applications, 2018, San Diego, California, United States

Abstract

We numerically report a design of a highly nonlinear spiral-shaped photonic crystal fiber (PCF) in Ga₈Sb₃₂S₆₀ chalcogenide glass for nonlinear applications in mid-infrared region. We have tailored the structural parameters to obtain all-normal and nearly zero flat-top dispersion profile. A flat-top dispersion curve is obtained with a negative dispersion value of -98.63 ps.nm^-1 km^-1. This structure possesses a very high nonlinear coefficient of 49190 W^-1 km ^-1 with effective mode area of the propagating fundamental mode as 0.833 μm2 at a pump wavelength of 1.9 μm. This highly nonlinear spiral-shaped PCF is suitable for the generation of an ultra-broadband supercontinuum spectrum in mid-IR domain. Various nonlinear applications of supercontinuum generation are pump-probe spectroscopy, nonlinear microscopy, metrology, frequency combs generation and optical coherence tomography.

Citation Download Citation

Pooja Chauhan, Ajeet Kumar, Yogita Kalra, and Than Singh Saini "Highly nonlinear spiral shaped photonic crystal fiber in a Ga-Sb-S chalcogenide glass for nonlinear applications", Proc. SPIE 10755, Photonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications XII, 1075510 (4 September 2018); https://doi.org/10.1117/12.2320901

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