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Proceedings Paper

Highly nonlinear spiral shaped photonic crystal fiber in a Ga-Sb-S chalcogenide glass for nonlinear applications
Author(s): Pooja Chauhan; Ajeet Kumar; Yogita Kalra; Than Singh Saini
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Paper 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.

Paper Details

Date Published: 4 September 2018
PDF: 6 pages
Proc. SPIE 10755, Photonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications XII, 1075510 (4 September 2018); doi: 10.1117/12.2320901
Show Author Affiliations
Pooja Chauhan, Delhi Technological Univ. (India)
Ajeet Kumar, Delhi Technological Univ. (India)
Yogita Kalra, Delhi Technological Univ. (India)
Than Singh Saini, Toyota Technological Institute (Japan)


Published in SPIE Proceedings Vol. 10755:
Photonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications XII
Shizhuo Yin; Ruyan Guo, Editor(s)

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