A 2×3 Photonic Switch in SiGe for 1.55μm Operation  

1·55μmSi Ge 2×3光开关(英文)

作　　者：陈志文[1] 李宝军[1] Chaudhari B S Chua S j 

机构地区：[1]中山大学光电材料与技术国家重点实验室,广州510275 [2]International Institute of Information Technology, Pune 411057, India [3]Center for Optoelectronics, Department of Electrical and Computer Engineering, National University of Singapore, Singapore 119260, Singapore [4]Institute of Materials Research and Engineering, Singapore 117602, Singapore

出　　处：《Journal of Semiconductors》2006年第3期494-498,共5页半导体学报（英文版）

基　　金：国家自然科学基金(批准号:90401008) ;教育部科学技术研究重点项目(批准号:104144) ;高等学校博士学科点专项科研基金(批准号:20040558009);广州市科技计划(批准号:2004Z3-D2051)资助项目~~

摘　　要：A silicon-based photonic switch is proposed and simulated based on the multimode interference （MMI） principle and the free-carrier plasma dispersion effect in silicon-germanium. The proposed switch, designed for 1.55μm window operation,is useful for DWDM optical networks. The switch consists of two input single-mode ridge waveguide ports,a MMI section, and three output single-mode ridge waveguide ports. In the MMI section, two index-modulation regions are placed to divert input optical signals from the two input ports to each of the three output ports. Switching characteristics are demonstrated theoretically by a beam propagation method for 1.55μm operation. The simulated results show that the insertion loss of the switch is less than 1.43dB, and the crosstalk is between - 18 and - 32.8dB.利用多模干涉效应和自由载流子等离子体色散效应设计和模拟了基于1·55μm波长的2×3Si Ge光开关.该光开关由两个单模输入端口、一个多模干涉区和三个单模输出端口构成.在多模干涉区,设有两个折射率调制区,可以利用来把从两个输入端口输入的光信号分别从三个输出端口输出.束传播法分析结果表明,该光开关的传输损耗小于1·43dB,串扰在-18 ^-32·8dB之间.

关 键 词：integrated optics photonic switch multimode interference 

分 类 号：TN256[电子电信—物理电子学]