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Title: On-chip octave-spanning supercontinuum generation in hybrid slot waveguide by power-efficient dual pump
Authors: Zhou, KZ
Li, Q
Kang, Z 
Huang, JY
Wai, PKA 
Issue Date: May-2021
Source: Results in physics, May 2021, v. 24, 104195
Abstract: We propose an on-chip cascaded structure consisting of a microresonator and a slot waveguide to generate the high-performance supercontinuum harnessing the dual pump scenario. Utilizing a single CW pump with the power of only 0.1 W, the dissipative Kerr soliton with the full width at half maximum of 69.2 fs and the peak power of 103.3 W is generated and couples out the microresonator together with the CW pump to serve as a dual pump seed for the supercontinuum generation in the followed slot waveguide. The slot waveguide built upon a silicon-organic hybrid structure is carefully designed to possess remarkable nonlinearity and appropriate dispersion profile for smooth and broadband supercontinuum generation. We have numerically achieved the 1.56 octave-spanning supercontinuum spanning 1 similar to 3 mu m with the proposed dual pump scenario. The supercontinuum generated by the dual pump scenario shows flattened, broadband, and quasi-right-angled-trapezoid shape, along with good coherence. Compared with the single pump scenario of CW or soliton pulse only, the supercontinuum generated by the dual pump scenario possesses the much stronger spectrum, broader spanning, and medium coherence. Our work opens up a new path for on-chip and cost-effective supercontinuum generation with the high performance of intensity, bandwidth, and coherence.
Keywords: Supercontinuum
Frequency comb
Integrated optics
Publisher: Elsevier
Journal: Results in physics 
EISSN: 2211-3797
DOI: 10.1016/j.rinp.2021.104195
Rights: © 2021 The Authors. Published by Elsevier B.V.
This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/)
The following publication Zhou, K., Li, Q., Kang, Z., Huang, J., & Wai, P. K. A. (2021). On-chip octave-spanning supercontinuum generation in hybrid slot waveguide by power-efficient dual pump. Results in Physics, 24, 104195 is available at https://doi.org/10.1016/j.rinp.2021.104195
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