Novel optical thyristors for free-space optical interconnects

被引：5
|
作者：
Lee, JH [1 ]
Choi, YW [1 ]
机构：
[1] Chung Ang Univ, Dept Elect Engn, Optoelect & Opt Commun Lab, Dongjak Ku, Seoul 156756, South Korea
来源：
OPTICAL ENGINEERING | 1999年 / 38卷 / 03期
关键词：
depleted optical thyristor; free-space optical interconnects; optical switching energy; bit rate; MQW; QWRS;
D O I：
10.1117/1.602283
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We propose and analyze novel fully depleted optical thyristors (DOTs) using multiple quantum wells (MQWs) and quarter-wavelength reflector stacks (QWRSs). MQWs are employed to enhance the absorption, while a QWRS is employed as a bottom mirror to enhance the emission efficiency as well as the optical sensitivity. In order to analyze the switching characteristics, we simulate S-shaped nonlinear current-voltage curves using a coupled junction model associated with the current-oriented method. Furthermore, emission characteristics are obtained by using the scattering-matrix method and the van Roosbroeck-Shockley relation. According to our analysis, the novel DOTs significantly improve the switching and light emission characteristics. Compared to a conventional DOT, the optical switching energy and the bit rate of the novel DOT using both MQWs and a QWRS are improved by a factor of 0.45 and 1.61, respectively, for a cascading operation. We also analyze the performances of free-space optical interconnects using the novel DOTs. (C) 1999 Society of Photo-Optical Instrumentation Engineers. [S0091-3286(99)01703-1].
引用
收藏
页码：531 / 536
页数：6
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