Coverage of coherent output states in parallel-coupled dual-racetrack microresonators  

作　　者：江伟 周亚亭 

机构地区：[1]College of Engineering and Applied Sciences & National Laboratory of Solid State Microstructures,Nanjing University [2]Department of Electrical and Computer Engineering,Rutgers University [3]Institute for Advanced Materials,Devices,and Nanotechnology,Rutgers University [4]School of Mathematics and Physics & Chemical Engineering,Changzhou Institute of Technology

出　　处：《Chinese Optics Letters》2016年第10期89-92,共4页中国光学快报（英文版）

基　　金：supported in part by the Jiangsu Province Natural Science Foundation of China(No.BK20141168);the Jiangsu Overseas Research & Training Program for University Prominent Young & Middle-aged Teachers and Presidents

摘　　要：Parallel-coupled dual-racetrack silicon microresonators can potentially be used for quadrature amplitude modu- lation. We analyze the evolution of the coverage of coherent output states of devices with varying device param- eters. As the coupling constant increases, the coverage of coherent states initially improves then degrades, which is unexpected based on a prior preference for overcoupling. Increasing the quality factor generally improves the coverage. The influence of the refractive index modulation is found to saturate after reaching a certain level. Analytic formulas are developed to provide insight into the coverage evolution. These results are fairly robust against a small asymmetry of device parameters.Parallel-coupled dual-racetrack silicon microresonators can potentially be used for quadrature amplitude modu- lation. We analyze the evolution of the coverage of coherent output states of devices with varying device param- eters. As the coupling constant increases, the coverage of coherent states initially improves then degrades, which is unexpected based on a prior preference for overcoupling. Increasing the quality factor generally improves the coverage. The influence of the refractive index modulation is found to saturate after reaching a certain level. Analytic formulas are developed to provide insight into the coverage evolution. These results are fairly robust against a small asymmetry of device parameters.

关 键 词：Modulation Resonators 

分 类 号：TN751.2[电子电信—电路与系统]