基于硅基Mach-Zehnder光开关的异或/同或门
首发时间:2014-12-26
摘要:光逻辑器件是实现高效数据交换与处理的关键器件。本文利用硅基载流子色散效应,采用级联基于pin电学结构的马赫曾德(Mach-Zehnder,MZ)光开关结构,同时实现电光逻辑异或/同或门(XOR/XNOR)。仿真结果表明:在外加高电平为0.825 V,低电平为0 V的方波信号作用下,pin电学结构产生有效折射率变化和吸收系数变化的最值分别为-5.17e-4和1.79/cm。电光逻辑异或/同或门的消光比大于23.4 dB,额外损耗小于1.18 dB,且传输速率可达100 Mbit/s。
关键词: 硅基光子学 异或/同或门 光开关 马赫曾德 载流子色散
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XOR/XNOR Logic Gate Using Silicon-Based Mach-Zehnder Switch
Abstract:Optical switches are key components for realizing efficient optical switching and computing. In this paper, an optical logic circuit performing the XOR and XNOR logical operations is proposed with cascaded Mach-Zehnder (MZ) switches which have embedded p-i-n junctions. The simulation results show the minimal effective index variation and the maximal absorption coefficient variation are -5.17e-4 and 1.79 /cm at an applied square-wave voltage with a high level of 0.825 V. The XOR and XNOR logic gate can operation with the speed of 100 Mbit/s and realize an extinction ratio exceeded 23.4 dB as well as an excess loss less than 1.18 dB.
Keywords: Silicon Photonics XOR/XNOR Switch Mach-Zehnder Carrier Dispersion
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