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

作     者：李大星 刘凯柱 余春龙 张括 刘跃钦 冯帅 Daxing Li;Kaizhu Liu;Chunlong Yu;Kuo Zhang;Yueqin Liu;Shuai Feng

作者机构：School of ScienceMinzu University of ChinaBeijing 100081China Optoelectronics Research CenterMinzu University of ChinaBeijing 100081China Engineering Research Center of Photonic Design SoftwareMinistry of EducationBeijing 100081China School of Optoelectronic Engineering and Instrumentation ScienceDalian University of TechnologyDalian 116024China 

出 版 物：《Chinese Physics B》 (中国物理B（英文版）)

年 卷 期：2024年第33卷第3期

页      面：453-458页

核心收录：

学科分类：080903[工学-微电子学与固体电子学] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 0804[工学-仪器科学与技术] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0702[理学-物理学] 

基　　金：Project supported by the National Natural Science Foundation of China(Grant Nos.12274478 and 61775244) the National Key Research and Development Program of China(Grant Nos.2021YFB2800604 and 2021YFB2800302) 

主　　题：photonic crystal all-optical diode Fano cavity unidirectional transmission 

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 *** 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,*** 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 *** corresponding response time is about 10 ps when the intensity of the pump light beam resonant at 637 nm is 3.97 W/μm2.