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非互易光传输方向的主动调控

Active Control of Nonreciprocal Optical Transmission Direction

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摘要

为实现非互易光传输的主动控制,提出了一种基于石墨烯光子晶体和磁光半导体材料的结构,通过对磁光半导体外加磁场,打破时间反转对称,获得了非互易的磁Tamm态等离子体激元(MTPP)。通过分析不同条件下的透射谱,研究了结构参数、外加磁场,以及石墨烯化学势对MTPP的影响。结果表明,通过调控外加磁场和石墨烯化学势,可以实现单向光传输的主动控制以及正、反双向光传输的灵活转换。该结构及其调控方法在光二极管和光开关等应用领域具有潜在的应用价值。

Abstract

In order to realize the active control of nonreciprocal optical transmission, a structure based on graphene photonic crystals and magneto-optical semiconductor materials is proposed. By adding external magnetic field on the magneto-optical semiconductor, the time-reversal symmetry is broken which contributes to the obtainment of nonreciprocal magnetic Tamm plasmon polaritons (MTPP). The influences of structural parameters, external magnetic field and graphene chemical potential on the MTPP are studied by analyzing the transmission spectra under different conditions. The results show that the active control of the unidirectional wave and the flexible switch between one-way forward and one-way backward transmission can be realized by modulating the external magnetic field and graphene chemical potentials. This structure and its modulation method have promising applications in optical diodes and optical switches.

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中图分类号:O436

DOI:10.3788/aos201737.0726003

所属栏目:物理光学

基金项目:国家自然科学基金(11104200,11604240)

收稿日期:2017-02-22

修改稿日期:2017-03-27

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作者单位    点击查看

任 坤:天津大学精密仪器与光电子工程学院光电信息技术教育部重点实验室, 天津 300072
范景洋:天津大学精密仪器与光电子工程学院光电信息技术教育部重点实验室, 天津 300072
任晓斌:天津科技大学理学院, 天津 300222

联系人作者:任坤(renkun@tju.edu.cn)

备注:任 坤(1976-),女,博士,副教授,主要从事纳米光子学和非线性光学方面的研究。

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引用该论文

Ren Kun,Fan Jingyang,Ren Xiaobin. Active Control of Nonreciprocal Optical Transmission Direction[J]. Acta Optica Sinica, 2017, 37(7): 0726003

任 坤,范景洋,任晓斌. 非互易光传输方向的主动调控[J]. 光学学报, 2017, 37(7): 0726003

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