Passive Generation of the Multi-Wavelength Parabolic Pulses in Tapered Silicon Nanowires

Chao Mei; Jinhui Yuan; Feng Li; Xian Zhou; Qiang Wu; Binbin Yan; Kuiru Wang; Keping Long; Gerald Farrell; Chongxiu Yu

doi:10.1109/ACCESS.2020.2990083

IEEE Access (Jan 2020)

Passive Generation of the Multi-Wavelength Parabolic Pulses in Tapered Silicon Nanowires

Chao Mei,
Jinhui Yuan,
Feng Li,
Xian Zhou,
Qiang Wu,
Binbin Yan,
Kuiru Wang,
Keping Long,
Gerald Farrell,
Chongxiu Yu

Affiliations

Chao Mei: ORCiD; Research Center for Convergence Networks and Ubiquitous Services, University of Science & Technology Beijing, Beijing, China
Jinhui Yuan: Research Center for Convergence Networks and Ubiquitous Services, University of Science & Technology Beijing, Beijing, China
Feng Li: Department of Electronic 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: 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
Keping Long: Research Center for Convergence Networks and Ubiquitous Services, University of Science & Technology Beijing, Beijing, China
Gerald Farrell: Photonics Research Centre, Dublin Institute of Technology, Dublin 2, Ireland
Chongxiu Yu: State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing, China

DOI: https://doi.org/10.1109/ACCESS.2020.2990083
Journal volume & issue: Vol. 8
pp. 77631 – 77641

Abstract

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In this paper, passive generation of the multi-wavelength parabolic pulses (PPs) in tapered silicon nanowires (TSNs) is numerically investigated. The coupled inhomogeneous nonlinear Schrödinger equation (INLSE) is derived in the context of TSN to model the multi-wavelength PP generation. The TSN is designed based on the well-known self-similar theory that the group-velocity dispersion is decreased while the nonlinear coefficient is unchanged along the propagative direction. While the pump wavelengths for three input pulses are specially set with equal intervals of 18, 12, and 6 nm, the time-domain profiles are aligned at the same position. Simulation results show that except for wavelength interval, the waveguide length is also a critical factor that influences the quality of generated PP. Both of them reshape the pulse profile by the means of walk-off effect which depends on the cross-phase modulation between multiple pulses. By properly optimizing the input parameters of Gaussian pulses as well as the center wavelength interval and TSN length, we prove that the generation of two- even three-wavelength PPs with high-quality is feasible.

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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