Ultralow power all-optical diode in photonic crystal heterostructures with broken spatial inversion symmetry

Cuicui Lu; Xiaoyong Hu; Yingbo Zhang; Zhiqiang Li; Xin'An Xu; Hong Yang; Qihuang Gong

doi:10.1063/1.3617433

Ultralow power all-optical diode in photonic crystal heterostructures with broken spatial inversion symmetry

Cuicui Lu, Xiaoyong Hu^*, Yingbo Zhang, Zhiqiang Li, Xin'An Xu, Hong Yang, Qihuang Gong

^*此作品的通讯作者

Peking University

科研成果: 期刊稿件 › 文章 › 同行评审

67 引用（Scopus）

摘要

We experimentally realize an all-optical diode in a photonic crystal heterostructure with broken spatial inversion symmetry. The physical mechanism is attributed to bandgaps only for certain wavevectors and the transition between different electromagnetic Bloch modes, without any nonlinearity and high power requirement. An ultralow photon intensity of 50 kW/cm² and an ultrahigh transmission contrast of over 10³ are reached simultaneously. Compared with previous reported all-optical diodes, the operating power is reduced by seven orders of magnitude, while the transmission contrast is enlarged by two orders of magnitude. This approach may open a way for the study of integrated photonic devices.

源语言	英语
文章编号	051107
期刊	Applied Physics Letters
卷	99
期	5
DOI	https://doi.org/10.1063/1.3617433
出版状态	已出版 - 1 8月 2011
已对外发布	是

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AU - Lu, Cuicui

AU - Hu, Xiaoyong

AU - Zhang, Yingbo

AU - Li, Zhiqiang

AU - Xu, Xin'An

AU - Yang, Hong

AU - Gong, Qihuang

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AB - We experimentally realize an all-optical diode in a photonic crystal heterostructure with broken spatial inversion symmetry. The physical mechanism is attributed to bandgaps only for certain wavevectors and the transition between different electromagnetic Bloch modes, without any nonlinearity and high power requirement. An ultralow photon intensity of 50 kW/cm2 and an ultrahigh transmission contrast of over 103 are reached simultaneously. Compared with previous reported all-optical diodes, the operating power is reduced by seven orders of magnitude, while the transmission contrast is enlarged by two orders of magnitude. This approach may open a way for the study of integrated photonic devices.

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Ultralow power all-optical diode in photonic crystal heterostructures with broken spatial inversion symmetry

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