Title | Dispersion-flattened concentric structure for microcomb bandwidth broadening in GaP-OI resonators |
Author | |
Publication Years | 2023-03-01
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DOI | |
Source Title | |
ISSN | 0740-3224
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EISSN | 1520-8540
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Volume | 40Issue:3Pages:673-681 |
Abstract | We propose and theoretically investigate the coupled concentric ring resonators on a thickness-constrained GaP on insulator (GaP-OI) integrated photonic platform. Achieving anomalous dispersion is fulfilled by mode hybridization in the coupled structure on a 200 nm thick GaP-OI resonator which originally only exhibits normal dispersion for the fundamental mode. The anomalous dispersion profile for the anti-symmetric mode is flattened and broadened in favor of Kerr frequency comb generation by optimizing the waveguide width and the coupling gap size synergistically. We show the flexibility of this design methodology by simultaneously flattening the dispersion profile while anchoring the dispersion peak location at 1550 nm. The optimized design has a flat anomalous dispersion span of 460 nm with a small peak of 160 ps/km/nm, 1.69 times lower than a traditional rectangular waveguide. The engineered dispersion profile enables a broadband Kerr frequency comb generation that has a 3 dB bandwidth of 67 nm and a 20 dB bandwidth of over 250 nm at both 1550 and 1650 nm pump wavelengths. The proposed design proves useful to achieve broad and flat anomalous dispersion on thickness-constrained materials, paving the way towards low-loss GaP-OI frequency comb resonators. |
URL | [Source Record] |
Indexed By | |
Language | English
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SUSTech Authorship | First
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Funding Project | Basic and Applied Basic Research Foundation of Guangdong Province["2021B1515120074","2023A1515012141"]
; Open Project Program of Wuhan National Laboratory for Optoelectronics[2021WNLOKF001]
; National Natural Science Foundation of China[62205137]
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WOS Research Area | Optics
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WOS Subject | Optics
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WOS Accession No | WOS:000955809900007
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Publisher | |
ESI Research Field | PHYSICS
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Data Source | 人工提交
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PDF url | https://opg.optica.org/josab/abstract.cfm?uri=josab-40-3-673 |
Publication Status | 正式出版
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Citation statistics |
Cited Times [WOS]:0
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Document Type | Journal Article |
Identifier | http://kc.sustech.edu.cn/handle/2SGJ60CL/503982 |
Department | SUSTech Institute of Microelectronics |
Affiliation | School of Microelectronics, MOE Engineering Research Center of Integrated Circuits for Next Generation Communications, Southern University of Science and Technology, Shenzhen, Guangdong, 518000, China |
First Author Affilication | SUSTech Institute of Microelectronics |
First Author's First Affilication | SUSTech Institute of Microelectronics |
Recommended Citation GB/T 7714 |
Zhaoting Geng,Houling Ji,Zhuoyu Yu,et al. Dispersion-flattened concentric structure for microcomb bandwidth broadening in GaP-OI resonators[J]. Journal of Optical Society of America B,2023,40(3):673-681.
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APA |
Zhaoting Geng.,Houling Ji.,Zhuoyu Yu.,Weiren Cheng.,Pengzhuo Wu.,...&Qiancheng Zhao.(2023).Dispersion-flattened concentric structure for microcomb bandwidth broadening in GaP-OI resonators.Journal of Optical Society of America B,40(3),673-681.
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MLA |
Zhaoting Geng,et al."Dispersion-flattened concentric structure for microcomb bandwidth broadening in GaP-OI resonators".Journal of Optical Society of America B 40.3(2023):673-681.
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Files in This Item: | ||||||
File Name/Size | DocType | Version | Access | License | ||
Geng et al_2023_Disp(4091KB) | Restricted Access | -- |
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