Effects of Resonator Loss on Output Characteristics of Ring Microresonator Filter

作     者：HUANG Chun-xiong WU Pei-xuan CHEN Hai-yan 

作者机构：College of Physics Science and Technology Yangtzeu University Jingzhou 434023 CHN 

出 版 物：《Semiconductor Photonics and Technology》 (半导体光子学与技术（英文版）)

年 卷 期：2006年第12卷第4期

页      面：257-261页

学科分类：070207[理学-光学] 07[理学] 0702[理学-物理学] 

基　　金：Key Project Foundation from Depart ment of Education of Hubei Province(D200512011) 

主　　题：Optical filter Frequency filter Ring microresonator Optical channel filter Optical waveguide filters Finesse 

摘      要：The ring microresonator filter considering resonator inner loss is analyzed theoretically, which has one input port and two output ports. Some universal relations for coupling of optical power between microresonator and dielectric waveguides are presented. The analytical expressions of filter bandwidth or the full width at half maximum(FWHM), free spectral range and finesse of resonator are derived. The characteristics of the ring microresonator filter are discussed numerically. It is demonstrated that the loss of the ring resonator reduces the peak value of transmission, widens the filter bandwidth, and reduces the finesse of the resonator filter.