结合非线性效应和线性干涉效应设计的全光半加器  

Design of all-optical half-adder based on nonlinear effect and linear interference effect

作　　者：杨建业 吴蓉[1] 张皓辰 YANG Jian-ye;WU Rong;ZHANG Hao-chen(School of Electronic and Information Engineering,Lanzhou Jiaotong University,Lanzhou 730070,China)

机构地区：[1]兰州交通大学电子与信息工程学院,甘肃兰州730070

出　　处：《中国光学（中英文）》2023年第5期1186-1194,共9页Chinese Optics

基　　金：甘肃省自然科学基金(No.21JR7RA289)。

摘　　要：结合光子晶体非线性效应和线性干涉效应设计了一种全光半加器。将光源平均分成两部分,对半加器的与门和异或门分开设计。利用非线性效应实现高对比度的与门;利用线性干涉效应实现异或逻辑,从而使器件整体响应速度更快。在这种设计结构下,器件对信号光源功率只有阈值要求,当信号功率大于51.4 mW/μm^(2)时输出稳定,抗干扰能力强。所设计的半加器进位输出端口对比度为20.69 dB,输出端口对比度为20.13 dB。数据传输速率为0.75 Tbits/s,占用面积623μm2。An all-optical half-adder is designed by combining the nonlinear effect and linear interference effect of photonic crystals.By dividing the light source into two parts equally,the half adder AND gate and XOR gate are designed separately.The nonlinear effect is used to realize the AND gate with high contrast,and the linear interference effect is used to realize the XOR logic,so that the overall response speed of the device is improved.In this design structure,the device only has threshold requirements for the signal light source power.When the signal power is greater than 51.4 mW/μm^(2),it has stable output and strong anti-interference ability.The designed contrast of the half adder carry output port is 20.69 dB,and the output port contrast is 20.13 dB.The data transfer rate is 0.75 Tbits/s and the occupied area is 623μm2.

关 键 词：全光半加器 环形谐振腔 微腔 光逻辑 线性干涉效应 

分 类 号：TN256[电子电信—物理电子学]