Mid-Infrared Supercontinuum and Frequency Comb Generations by Different Optical Modes in a Multimode Chalcogenide Strip Waveguide

Yujun Cheng; Jinhui Yuan; Chao Mei; Feng Li; Xian Zhou; Qiang Wu; Binbin Yan; Kuiru Wang; Chongxiu Yu; Keping Long; P. K. A. Wai

doi:10.1109/ACCESS.2020.3036282

IEEE Access (Jan 2020)

Mid-Infrared Supercontinuum and Frequency Comb Generations by Different Optical Modes in a Multimode Chalcogenide Strip Waveguide

Yujun Cheng,
Jinhui Yuan,
Chao Mei,
Feng Li,
Xian Zhou,
Qiang Wu,
Binbin Yan,
Kuiru Wang,
Chongxiu Yu,
Keping Long,
P. K. A. Wai

Affiliations

Yujun Cheng: ORCiD; State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing, China
Jinhui Yuan: ORCiD; State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing, China
Chao Mei: ORCiD; Research Center for Convergence Networks and Ubiquitous Services, University of Science & Technology Beijing, Beijing, China
Feng Li: ORCiD; Department of Electronics and Information Engineering, Photonics Research Centre, The Hong Kong Polytechnic University, Hong Kong
Xian Zhou: ORCiD; Research Center for Convergence Networks and Ubiquitous Services, University of Science & Technology Beijing, Beijing, China
Qiang Wu: ORCiD; Department of Physics and Electrical Engineering, Northumbria University, Newcastle upon Tyne, U.K.
Binbin Yan: ORCiD; State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing, China
Kuiru Wang: State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing, China
Chongxiu Yu: State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing, China
Keping Long: ORCiD; Research Center for Convergence Networks and Ubiquitous Services, University of Science & Technology Beijing, Beijing, China
P. K. A. Wai: ORCiD; Department of Electronics and Information Engineering, Photonics Research Centre, The Hong Kong Polytechnic University, Hong Kong

DOI: https://doi.org/10.1109/ACCESS.2020.3036282
Journal volume & issue: Vol. 8
pp. 202022 – 202031

Abstract

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Supercontinuum (SC) with broad bandwidth and high coherence is crucial in the SC-based frequency comb source generation. In this paper, we numerically investigate the mid-infrared (MIR) SC generations with the three optical modes (TE00, TE10, and TE20) in a multimode chalcogenide (As2Se3) strip waveguide. The waveguide structure is carefully engineered to ensure that the pump pulses are propagated in the normal dispersion regions of the considered three optical modes. Highly coherent and octave-spanning MIR SCs are generated when the optimized pump pulse with 80-fs pulse duration, 3-kW peak power, and 3-μm center wavelength is used. Moreover, the nonlinear dynamics of the SC generation are numerically analyzed. Finally, the SC-based frequency combs are numerically demonstrated when a pulse train with a repetition rate of 50 MHz is used as the pump source and launched into the multimode As2Se3-based strip waveguide. It is believed that the generated MIR SC and SC-based frequency comb sources have important applications in biophotonics, metrology, and sensing.

Published in IEEE Access

ISSN: 2169-3536 (Online)
Publisher: IEEE
Country of publisher: United States
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering
Website: https://ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=6287639

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