High-efficiency ultra-fast all-optical photonic crystal diode based on the lateral-coupled nonlinear elliptical defect

doi:10.1088/1674-1056/ad0117

中国物理B ›› 2024, Vol. 33 ›› Issue (3): 34215-034215.doi: 10.1088/1674-1056/ad0117

High-efficiency ultra-fast all-optical photonic crystal diode based on the lateral-coupled nonlinear elliptical defect

Daxing Li(李大星)^1,2,3, Kaizhu Liu(刘凯柱)⁴, Chunlong Yu(余春龙)^1,2,3, Kuo Zhang(张括)^1,2,3, Yueqin Liu(刘跃钦)^1,2,3, and Shuai Feng(冯帅)^1,2,3,†

1 School of Science, Minzu University of China, Beijing 100081, China;
2 Optoelectronics Research Center, Minzu University of China, Beijing 100081, China;
3 Engineering Research Center of Photonic Design Software, Ministry of Education, Beijing 100081, China;
4 School of Optoelectronic Engineering and Instrumentation Science, Dalian University of Technology, Dalian 116024, China

收稿日期:2023-08-01 修回日期:2023-09-24 接受日期:2023-10-07 出版日期:2024-02-22 发布日期:2024-02-22
通讯作者: Shuai Feng E-mail:fengshuai75@163.com
基金资助:
Project supported by the National Natural Science Foundation of China (Grant Nos. 12274478 and 61775244) and the National Key Research and Development Program of China (Grant Nos. 2021YFB2800604 and 2021YFB2800302).

High-efficiency ultra-fast all-optical photonic crystal diode based on the lateral-coupled nonlinear elliptical defect

Daxing Li(李大星)^1,2,3, Kaizhu Liu(刘凯柱)⁴, Chunlong Yu(余春龙)^1,2,3, Kuo Zhang(张括)^1,2,3, Yueqin Liu(刘跃钦)^1,2,3, and Shuai Feng(冯帅)^1,2,3,†

1 School of Science, Minzu University of China, Beijing 100081, China;
2 Optoelectronics Research Center, Minzu University of China, Beijing 100081, China;
3 Engineering Research Center of Photonic Design Software, Ministry of Education, Beijing 100081, China;
4 School of Optoelectronic Engineering and Instrumentation Science, Dalian University of Technology, Dalian 116024, China

Received:2023-08-01 Revised:2023-09-24 Accepted:2023-10-07 Online:2024-02-22 Published:2024-02-22
Contact: Shuai Feng E-mail:fengshuai75@163.com
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos. 12274478 and 61775244) and the National Key Research and Development Program of China (Grant Nos. 2021YFB2800604 and 2021YFB2800302).

摘要/Abstract

摘要： An all-optical Fano-like diode featuring a nonlinear lateral elliptical micro-cavity and a reflecting column in the photonic crystal waveguide is proposed. The asymmetric micro-cavity is constructed by removing one rod and changing the shape of the lateral rod from a circle to an ellipse. A reflecting pillar is also introduced into the waveguide to construct an F-P cavity with the elliptical defect and enhance the asymmetric transmission for the incident light wave transmitting rightwards and leftwards, respectively. By designing the size of the ellipse and optimizing a reflecting rod at a suitable position, a maximum forward light transmittance of -1.14 dB and a minimum backward transmittance of -57.66 dB are achieved at the working wavelength of 1550.47 nm. The corresponding response time is about 10 ps when the intensity of the pump light beam resonant at 637 nm is 3.97 W/μm².

关键词: photonic crystal, all-optical diode, Fano cavity, unidirectional transmission

Abstract: An all-optical Fano-like diode featuring a nonlinear lateral elliptical micro-cavity and a reflecting column in the photonic crystal waveguide is proposed. The asymmetric micro-cavity is constructed by removing one rod and changing the shape of the lateral rod from a circle to an ellipse. A reflecting pillar is also introduced into the waveguide to construct an F-P cavity with the elliptical defect and enhance the asymmetric transmission for the incident light wave transmitting rightwards and leftwards, respectively. By designing the size of the ellipse and optimizing a reflecting rod at a suitable position, a maximum forward light transmittance of -1.14 dB and a minimum backward transmittance of -57.66 dB are achieved at the working wavelength of 1550.47 nm. The corresponding response time is about 10 ps when the intensity of the pump light beam resonant at 637 nm is 3.97 W/μm².

Key words: photonic crystal, all-optical diode, Fano cavity, unidirectional transmission

中图分类号: (Photonic bandgap materials)

42.70.Qs

42.25.Bs (Wave propagation, transmission and absorption) 78.67.Pt (Multilayers; superlattices; photonic structures; metamaterials)

Daxing Li(李大星), Kaizhu Liu(刘凯柱), Chunlong Yu(余春龙), Kuo Zhang(张括),Yueqin Liu(刘跃钦), and Shuai Feng(冯帅). High-efficiency ultra-fast all-optical photonic crystal diode based on the lateral-coupled nonlinear elliptical defect[J]. 中国物理B, 2024, 33(3): 34215-034215.

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High-efficiency ultra-fast all-optical photonic crystal diode based on the lateral-coupled nonlinear elliptical defect

High-efficiency ultra-fast all-optical photonic crystal diode based on the lateral-coupled nonlinear elliptical defect

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