Optical isolation based on nonreciprocal phase shift induced by interband photonic transitions

被引：58
|
作者：
Yu, Zongfu [1 ]
Fan, Shanhui [1 ]
机构：
[1] Stanford Univ, Ginzton Lab, Stanford, CA 94305 USA
来源：
APPLIED PHYSICS LETTERS | 2009年 / 94卷 / 17期
基金：
美国国家科学基金会;
关键词：
coupled mode analysis; Mach-Zehnder interferometers; optical circulators; optical isolators; optical waveguide theory; silicon;
D O I：
10.1063/1.3127531
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Photonic transitions in waveguides can create nonreciprocal phase response for counterpropagating modes. Such effect can be used in Mach-Zehnder interferometers to form optical isolators and circulators. Performance of such device is analyzed using coupled mode theory given the experimentally available modulation in silicon. The proposed scheme can provide a broadband (>0.8 THz), high contrast ratio (>20 dB) optical isolation at telecommunication wavelength.
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页数：3
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