北京邮电大学学报

  • EI核心期刊

北京邮电大学学报 ›› 2009, Vol. 32 ›› Issue (3): 127-130.doi: 10.13190/jbupt.200903.127.148

• 研究报告 • 上一篇    

SEED光开关的响应时间及扩散特性分析

曹永盛 尹霄丽 忻向军 余重秀 马健新   

  1. 北京邮电大学 电子工程学院 北京邮电大学 北京邮电大学
  • 收稿日期:2008-05-11 修回日期:2009-02-26 出版日期:2009-06-28 发布日期:2009-06-28
  • 通讯作者: 曹永盛

Analysis of SEED Optical Switch on Response Time and Diffusion Characteristic

CAO Yong-sheng Xiao-li YIN Xiang-jun XIN Chong-xiu YU   

  • Received:2008-05-11 Revised:2009-02-26 Online:2009-06-28 Published:2009-06-28
  • Contact: CAO Yong-sheng

摘要:

介绍了SEED的基本结构及工作原理,通过等效电阻-电容(RC)模型对其结构进行分析并利用理论分析和数学推导近似得出了SEED的电压-时间(V-T)特性表达式。利用MATLAB对SEED理论表达式进行了仿真和分析,比较了SEED在不同半径控制光入射下的开关性能,结果表明采用入射半径较小的控制光可以提高SEED的开关性能;对SEED在特定时间,不同半径入射光下的电压-半径(V-r)扩散性能进行了比较,发现只有在靠近控制光入射中心位置处,SEED才能保持其良好的开关特性。

关键词: QCSE, SEED, 光开关, V-T特性, 性能仿真

Abstract:

Self-Electroopic Effect Device’s (SEED’s) basic structure and operation principles are proposed, then equivalent Resistance-Capacitance (RC) model are applied for analysis. Theoretical analysis and mathematic computation are utilized to obtain SEED’s Voltage-Time (V-T) characteristic expressions. Theoretical expressions are verified by simulations, and the simulations compare SEED’s switch characteristics with different radiuses of input control beams, and demonstrate that SEED’s switch characteristic can be effectively improved with small input radius. Moreover, the simulations compare SEED’s Voltage-radius (V-r) diffusion characteristics with a fixed time and different input radiuses, then the results reveal that SEED can only keep its excellent switch performance near the input light beam’s center.

Key words: QCSE, SEED, Optical switch, V-T characteristics, Characteristics simulation