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Article

Observation of Ultrashort Laser Pulse Evolution in a Silicon Photonic Crystal Waveguide

1
Department of Physics, College of Liberal Arts and Sciences, National University of Defense Technology, Changsha 410073, China
2
School of Physics and Optoelectronic Engineering, Xidian University, Xi’an 710071, China
3
College of Information and Communication, National University of Defense Technology, Changsha 410073, China
*
Author to whom correspondence should be addressed.
Academic Editors: Minhao Pu and Jing Xu
Micromachines 2021, 12(8), 911; https://doi.org/10.3390/mi12080911
Received: 19 June 2021 / Revised: 23 July 2021 / Accepted: 28 July 2021 / Published: 30 July 2021
(This article belongs to the Special Issue Photonic Chips for Optical Communications)
Using the sum frequency generation cross-correlation frequency-resolved optical gating (SFG-XFROG) measurement setup, we observed the soliton evolution of low energy pulse in an Si photonic crystal waveguide, and it exhibited the pulse broadening, blue shift, and evident pulse acceleration. The soliton evolution was also investigated by nonlinear Schrödinger equation (NLSE) modelling simulation, and the simulated results agreed well with the experimental measurements. The effects of waveguide length on the pulse evolution were analyzed; the results showed that the pulse width changed periodically with increasing waveguide length. The results further the understanding of the ultra-fast nonlinear dynamics of solitons in silicon waveguides, and are helpful to soliton-based functional elements on CMOS-compatible platforms. View Full-Text
Keywords: photonic crystal waveguide; pulse acceleration; blue shift photonic crystal waveguide; pulse acceleration; blue shift
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MDPI and ACS Style

Wang, X.; Liao, J.; Pan, J.; Yang, H.; Li, X. Observation of Ultrashort Laser Pulse Evolution in a Silicon Photonic Crystal Waveguide. Micromachines 2021, 12, 911. https://doi.org/10.3390/mi12080911

AMA Style

Wang X, Liao J, Pan J, Yang H, Li X. Observation of Ultrashort Laser Pulse Evolution in a Silicon Photonic Crystal Waveguide. Micromachines. 2021; 12(8):911. https://doi.org/10.3390/mi12080911

Chicago/Turabian Style

Wang, Xiaochun, Jiali Liao, Jinghan Pan, Heng Yang, and Xiujian Li. 2021. "Observation of Ultrashort Laser Pulse Evolution in a Silicon Photonic Crystal Waveguide" Micromachines 12, no. 8: 911. https://doi.org/10.3390/mi12080911

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