光子学报, 2016, 45 (5): 0523002, 网络出版: 2016-06-06
波长选择性平行耦合微环谐振四端口光路由
Wavelength-routed Four-port Optical Router Based on Parallel-coupled Microring Resonators
摘要
利用四个平行耦合单环谐振器作为基本路由单元, 数值模拟了一种可路由三种信道波长的四端口光路由器.为了实现单模传输、低传输损耗以及微环波导和信道波导的相位匹配, 优化了基本路由单元的结构参量.给出了路由器的器件架构和设计方法, 计算了链路光谱、插入损耗、串扰等路由特性.在选定的三个信道波长(1 550、1 551.6、1 553.2 nm)下, 器件沿不同路径的插入损耗范围为0.02~0.6 dB, 器件串扰的范围为-23.41~-37.71 dB.与具有相同波导参量的基于交叉耦合双环谐振器的四端口光路由器相比, 该四端口光路由器在串扰和波长选择性方面略显不足, 但其使用的微环数量由8个降低为4个, 插入损耗由1.62 dB降低为0.02 dB.
Abstract
By adopting four parallel-coupling one microring resonator as basic routing elements, a kind of four-port optical router is proposed, which can passively route three channel wavelengths. The structural parameters of the routing element were optimized for single-mode transmission, low optical loss and phase-match between microring waveguide and channel waveguide. The device architecture as well as design scheme of the router was presented, and routing characteristic including spectrum characteristic, insertion loss and crosstalk were calculated. Under the selected three channel wavelengths of 1 550, 1 551.6 and 1 553.2 nm, the insertion losses along all routing paths are within 0.02~0.6 dB, and the crosstalk ranges from -23.41 to -37.71 dB. Compared with the previously reported four-port optical router using cross-coupling two microring resonator and the same waveguide parameters, the proposed router reveals slightly higher crosstalk and inferior spectral selectivity, but it does show smaller insertion loss (decreasing from 1.62 dB to 0.02 dB) and uses less rings (decreasing from 8 to 4).
李翠婷, 郑文雪, 郑传涛, 张大明, 王一丁, 马春生. 波长选择性平行耦合微环谐振四端口光路由[J]. 光子学报, 2016, 45(5): 0523002. LI Cui-ting, ZHENG Wen-xue, ZHENG Chuan-tao, ZHANG Da-ming, WANG Yi-ding, MA Chun-sheng. Wavelength-routed Four-port Optical Router Based on Parallel-coupled Microring Resonators[J]. ACTA PHOTONICA SINICA, 2016, 45(5): 0523002.