Proposal of semiconductor directional-coupler-type all-optical switch with tapered-waveguide structures

被引：0
|
作者：
Takizawa, Toshiyuki [1 ]
Uchino, Akira [1 ]
Arai, Shigehisa [1 ]
机构：
[1] Tokyo Inst of Technology, Tokyo, Japan
来源：
Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes & Review Papers | 1997年 / 36卷 / 3 A期
关键词：
Computer simulation - Light extinction - Nonlinear equations - Refractive index - Semiconductor device models;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
We propose a semiconductor directional-coupler-type all-optical switch with tapered structures which is based on the nonlinear refractive index variation induced by photoexcited carriers. A recurrence equation describing the device is derived from `Marcatili's' coupling mode theory and studied by numerical simulations. It is shown that the introduction of tapered structures is effective for improving the extinction ratio. It is also found that this device can drive a signal light at a power about 17 dB higher than the control light power.
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页码：1060 / 1067
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