Dispersion of double-slot in optical microring resonators buffer

作     者：Chuan WANG Xiaoying LIU Peng ZHOU Peng LI Jia DU 

作者机构：School of Optical and Electronic Information Huazhong University of Science and Technology Wuhan 430074 China 

出 版 物：《Frontiers of Optoelectronics》 (光电子前沿（英文版）)

年 卷 期：2016年第9卷第1期

页      面：106-111页

核心收录：

学科分类：080904[工学-电磁场与微波技术] 081702[工学-化学工艺] 0808[工学-电气工程] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 0817[工学-化学工程与技术] 0805[工学-材料科学与工程（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：国家自然科学基金 国家863计划 

主　　题：microring optical buffer double-slot waveguide 

摘      要：In the optical packet switching network, optical buffer is an important device. Microring resonator optical buffers provide good delay performance and flexibility in design. By cascading multiple microring resonators, higher delay-bandwidth product is obtained, but the requirements of high integration and low dispersion are hard to satisfy simultaneously. Double-slot waveguide was proposed to construct highly integrated racetrack microring resonators in this study. Based on dispersion analysis of the thickness of each layer of a waveguide, the structure ofwaveguide was optimized to reach flat and low dispersion. Average dispersions of straight and 3 μm bend waveguides were 5.1 ps/（nm·km） and 4.4 ps/（nm· km）, respectively. Besides, the additional loss from coupling was greatly reduced when applying proper relative displacement between straight and bend waveguides. Theoretical and design basis provided in this paper will help to develop multi-microring optical buffers in the future.