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17 June 2021 Efficient and wide supercontinuum generation in dispersion engineered tellurite clad As2S3 core photonic crystal fiber within 1 mm of fiber length
Shah Md. Salimullah, Md. Shakhawath Hossain, Mohammad Faisal
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Abstract

We present broadband supercontinuum generation in dispersion engineered tellurite clad As2S3 core photonic crystal fiber. Finite element method (FEM) is adopted for different numerical analysis of the fiber. The design is so engineered that zero dispersion is obtained at 1550-nm wavelength. Very high nonlinearity is achieved in the proposed structure as 5.5  ×  104  W  −  1 km  −  1. For a 20 fs input pulse with 3-kW peak power, the fiber presents a wideband supercontinuum spectrum spanning a huge bandwidth of 11,454 nm using just 1-mm length of fiber. This might play a vital role in ultra-broadband signal amplification, biomedical imaging, biophotonics, and spectroscopy.

© 2021 Society of Photo-Optical Instrumentation Engineers (SPIE) 0091-3286/2021/$28.00 © 2021 SPIE
Shah Md. Salimullah, Md. Shakhawath Hossain, and Mohammad Faisal "Efficient and wide supercontinuum generation in dispersion engineered tellurite clad As2S3 core photonic crystal fiber within 1 mm of fiber length," Optical Engineering 60(6), 066110 (17 June 2021). https://doi.org/10.1117/1.OE.60.6.066110
Received: 21 October 2020; Accepted: 26 May 2021; Published: 17 June 2021
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Cited by 2 scholarly publications.
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KEYWORDS
Dispersion

Supercontinuum generation

Refractive index

Glasses

Optical engineering

Chalcogenides

Biomedical optics

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