个人信息Personal Information
教授
博士生导师
硕士生导师
主要任职:光电工程与仪器科学学院副院长
性别:男
毕业院校:中国科学院上海光学精密机械研究所
学位:博士
所在单位:光电工程与仪器科学学院
学科:光学工程. 测试计量技术及仪器. 通信与信息系统
联系方式:电话:0411-84706251
电子邮箱:xyhan@dlut.edu.cn
Influence of coupling conditions on the time delay characteristics of parallel-cascaded optical waveguide ring resonators
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论文类型:期刊论文
发表时间:2013-03-01
发表刊物:OPTIK
收录刊物:SCIE、EI
卷号:124
期号:5
页面范围:377-384
ISSN号:0030-4026
关键字:Microwave photonics; Optical beamforming network; True time delay line; Waveguide ring resonator
摘要:The influence of coupling conditions of parallel-cascaded waveguide ring resonators on the time delay application in the optically phased array antennas is analyzed. Two kinds of coupling conditions, over-coupling and restriction free are considered to achieve a certain target delay time by parallel-cascaded three ring resonators. The results show that the restriction free coupling condition is better than the over-coupling one to obtain a flat time delay response in the target delay bandwidth especially for the small target delay time, which is the advantage of ring-resonator-based tunable true time delay line. The influence of round-trip loss on the time delay response and the transmission amplitude response is also investigated, which indicates that ring resonators with low optical round-trip loss are preferred to achieve a high performance true time delay line. (C) 2012 Elsevier GmbH. All rights reserved.