POLARIZATION-INDEPENDENT OPTICAL WAVE-GUIDE INTENSITY SWITCH WITH PARABOLIC QUANTUM-WELL

被引：26

作者：

TADA, K

NISHIMURA, S

ISHIKAWA, T

机构：

[1] Department of Electronic Engineering, University of Tokyo, Bunkyo-ku, Tokyo, 113

来源：

APPLIED PHYSICS LETTERS | 1991年 / 59卷 / 22期

关键词：

D O I：

10.1063/1.105857

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

In a parabolic quantum well, the shift in optical transition energy due to the quantum confined Stark effect is independent of the carrier effective mass. This fact enables us to realize polarization-independent optical waveguide intensity switches with high on/off ratio. An absorption-type switch with GaAs/Al0.3Ga0.7As equivalent parabolic quantum wells is fabricated with molecular beam epitaxy. Both transverse-electric and transverse-magnetic mode lights exhibit an on/off ratio of 27.6 dB at an applied voltage of 6.84 V at 850 nm wavelength. To our knowledge, this is the first polarization-independent optical waveguide intensity switch based on the electric-field-induced effect in the semiconductor quantum well.

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页码：2778 / 2780

页数：3

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