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题名

Dispersion-flattened concentric structure for microcomb bandwidth broadening in GaP-OI resonators

作者
发表日期
2023-03-01
DOI
发表期刊
ISSN
0740-3224
EISSN
1520-8540
卷号40期号:3页码:673-681
摘要

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.

相关链接[来源记录]
收录类别
SCI ; EI
语种
英语
学校署名
第一
资助项目
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]
WOS研究方向
Optics
WOS类目
Optics
WOS记录号
WOS:000955809900007
出版者
EI入藏号
20231513882794
EI主题词
Bandwidth ; Dispersion (waves) ; Waveguides
EI分类号
Waveguides:714.3 ; Information Theory and Signal Processing:716.1
ESI学科分类
PHYSICS
来源库
人工提交
全文链接https://opg.optica.org/josab/abstract.cfm?uri=josab-40-3-673
出版状态
正式出版
引用统计
被引频次[WOS]:5
成果类型期刊论文
条目标识符http://sustech.caswiz.com/handle/2SGJ60CL/503982
专题工学院_深港微电子学院
作者单位
School of Microelectronics, MOE Engineering Research Center of Integrated Circuits for Next Generation Communications, Southern University of Science and Technology, Shenzhen, Guangdong, 518000, China
第一作者单位深港微电子学院
第一作者的第一单位深港微电子学院
推荐引用方式
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.
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.
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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Geng et al_2023_Disp(4091KB)----限制开放--
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