新型电光逻辑门的设计及计算机图形光谱(英文)  

New electro-optic logic gate design and computer graphics spectrum

作　　者：张洋[1] 刘海燕[2] 

机构地区：[1]北京信息职业技术学院,北京100055 [2]清华大学水利水电工程系,北京100010

出　　处：《红外与激光工程》2017年第1期243-248,共6页Infrared and Laser Engineering

基　　金：国家自然科学基金(10674041)

摘　　要：光逻辑门是未来全光网络中光信息处理的核心元件,它可以实现高速光包交换,全光地址识别,数据编码,奇偶校验,信号再生等功能。采用微环谐振器设计了一种新型的电光逻辑门,结构通过三个非对称微环组成,分析耦合区的传输矩阵方程得出加载电压信号的变化能够实现微环折射率的变化,利用光强的逻辑开关特性可以实现光门逻辑。计算机仿真验证了工作波长1 600 nm时,实现的高电平50.7 V定义为逻辑1,低电平0 V定义为逻辑0,通过光强变化得出了6位逻辑运算;整个系统的响应时间理论上得到了1.8 ps,运算速率可达近200 Gbit/s。逻辑的双稳态分析中得出:微环发生最大谐振值时对应的控制波长等于微环未发生形变前的谐振波长和偏移量之和;调制可以通过微环谐振波长实现控制。这一研究对于未来全光通信的实现具有一定的意义。An optical logic gate is the core of optical information processing in all future optical network elements, allowing for high-speed optical packet switching, all-optical address identification, data coding,parity, and signal regeneration. A micro-ring resonator was adopted to design a new electro-optical logic gate using three asymmetric micro-rings. The analysis of coupled transfer matrix equations showed that the change in the load voltage signal resulted in a change in the refractive index. Micro-rings using the logic-switching characteristic of light intensity can achieve an optical logic gate. The computer simulation verified that the working wavelength was 1 600 nm. The high-level load voltage 50.7 V was defined as logic 1, whereas the low-level load voltage was defined as logic 0. A voltage of 0 V was obtained by six light intensity change logic operations. The response time of the entire system is 1.8 ps theoretically, and the computation speed can reach approximately 200 Gbit/s. The bistable logic analysis revealed that the micro-ring is equal to the corresponding control micro-ring at maximum resonant wavelength. No deformation occurred in the resonant wavelength and the sum of the offset. Therefore, modulation can be achieved through micro-ring resonant wavelength control.

关 键 词：全光网络 光逻辑门 微环谐振器 耦合区 

分 类 号：O23[理学—运筹学与控制论]