基于光子晶体WM腔和纳米线波导的电光调制与模分复用集成器件  

Electro-optic modulation and mode division multiplexing integrated device based on photonic crystal WM cavity and nanowire waveguide

作　　者：李琦[1] 陈鹤鸣 LI Qi;CHEN Heming(College of Electronic and Optical Engineering,Nanjing University of Posts and Telecommunications,Nanjing 210023,China;Bell Honors School,Nanjing University of Posts and Telecommunications,Nanjing 210023,China)

机构地区：[1]南京邮电大学电子与光学工程学院,南京210023 [2]南京邮电大学贝尔英才学院,南京210023

出　　处：《光通信技术》2022年第6期10-17,共8页Optical Communication Technology

基　　金：国家自然科学基金项目(No.61571237)资助;江苏省自然科学基金项目(No.BK20151509)资助。

摘　　要：为了提高通信速率,扩展信道容量,提出了一种采用宽度调制(WM)谐振腔和纳米线波导将电光调制模块和模分复用器模块进行耦合的集成器件,详细介绍了电光调制器模块和模分复用器模块的原理、结构设计和性能,并采用Lumerical软件对该集成器件进行了仿真和容差分析。仿真结果表明:该集成器件在工作波长为1550 nm时可以先进行电光调制,再进行TE0模与TE1模复用;2种模式的插入损耗分别为0.186 d B和0.18 d B,消光比分别为29.6 d B和24.5 d B,信道串扰分别为-49.57 d B和-49.12 d B,调制深度均为0.999。In order to improve the communication rate and expand the channel capacity,an integrated device using width modulation(WM) resonator and nanowire waveguide is proposed to couple the electro-optical modulation module and the mode division multiplexer module.The principle,structure design and performance of the electro-optical modulation module and the mode division multiplexer module are introduced in detail.The Lumerical software is used for simulation and tolerance analysis.The simulation results show that when the working wavelength of the integrated device is 1550 nm,the electro-optical modulation can be performed first,and then the TE0mode and TE1mode can be multiplexed.The insertion loss of the two modes is 0.186 dB and0.18 dB respectively,the extinction ratio is 29.6 dB and 24.5 dB respectively,the channel crosstalk is-49.57 dB and-49.12 dB respectively,and the modulation depth is 0.999.

关 键 词：宽度调制 电光调制 模分复用 光子晶体 纳米线波导 

分 类 号：TN256[电子电信—物理电子学]