VERTICAL MULTIPLE-QUANTUM-WELL DIRECTIONAL-COUPLER SWITCH WITH LOW SWITCHING VOLTAGE

被引：3
|
作者：
YAMAGUCHI, T [1 ]
TADA, K [1 ]
ISHIKAWA, T [1 ]
机构：
[1] FURUKAWA ELECT,OPTOTECHNOL LAB,ICHIHARA,CHIBA 290,JAPAN
来源：
IEEE PHOTONICS TECHNOLOGY LETTERS | 1992年 / 4卷 / 07期
关键词：
D O I：
10.1109/68.145251
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A novel device structure of the vertical directional-coupler optical switch with multiple quantum well (MQW's) is proposed and fabricated. All the clad, guide, and separation layers are superlattices of Al0.3Ga0.7As and GaAs. This leads to a better control of the complete coupling length. The main feature of the proposed structure is that the refractive index modulation due to the quantum confined Stark effect (QCSE) is applied only to the undoped central region of the separation layer. It is found that this leads to reduction of the switching voltage. In an actual sample 138-mu-m long, a switching voltage of 5 V has been obtained.
引用
收藏
页码：723 / 725
页数：3
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