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Title: Mid-infrared spectral compression of soliton pulse in an adiabatically suspended silicon waveguide taper
Authors: Cheng, YJ
Yuan, JH 
Mei, C
Li, F 
Yan, BB
Zhou, X
Wu, Q
Wang, KR
Sang, XZ
Long, KP
Keywords: Spectral compression
Suspended silicon waveguide taper
Issue Date: 2019
Publisher: Institute of Electrical and Electronics Engineers
Source: IEEE photonics journal, Aug. 2019, v. 11, no. 4, 4500911, p. 1-12 How to cite?
Journal: IEEE photonics journal 
Abstract: Spectral compression (SPC) can be used for generating narrow bandwidth and wavelength-tunable light sources, which have important applications in optical communication system, spectroscopy, and nonlinear microscopy. In this paper, we numerically demonstrate the high-degree SPC of the chirp-free femtosecond pulse at wavelength 2.4 mu m in a 6-cm long adiabatically suspended silicon waveguide taper. The silicon waveguide taper is designed with a dispersion-increasing profile along the propagation distance z. Simulation results show that the SPC factor can be up to 10.9, along with the brightness-enhanced factor of 8.0 and negligible sidelobe. The impacts of the higher order dispersion, higher order nonlinearity, losses (including linear and nonlinear loss), and variation of Kerr nonlinear coefficient along z on the SPC are also investigated. It is found that variation of Kerr nonlinear coefficient gamma(z) and linear loss are the dominant perturbation to the degradation of the SPC performance.
EISSN: 1943-0655
DOI: 10.1109/JPHOT.2019.2927392
Rights: This work is licensed under a Creative Commons Attribution 3.0 License. For more information, see
The following publication Y. Cheng et al., "Mid-Infrared Spectral Compression of Soliton Pulse in an Adiabatically Suspended Silicon Waveguide Taper," in IEEE Photonics Journal, vol. 11, no. 4, pp. 1-11, Aug. 2019, Art no. 4500911 is available at
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