An All-Optical Diode Based on Plasmonic Attenuation and Nonlinear Frequency Conversion
REN Ming-Liang, ZHONG Xiao-Lan, CHEN Bao-Qin, LI Zhi-Yuan**
Laboratory of Optical Physics, Institute of Physics, Chinese Academy of Sciences, P. O. Box 603, Beijing 100190
Abstract ：We present the design of an all-optical diode in a metal-dielectric structure where plasmonic attenuation and quasi-phase-matching are harnessed to greatly improve its performance. Due to the asymmetric design of the second-order nonlinear coefficient, different incident directions will ignite different plasmonic nonlinear processes, which compensate or accelerate plasmonic attenuation. As a result, a unidirectional output of plasmonic signal is achieved. This designed all-optical diode shows advantages of low power consumption, short sample length, high isolation contrast, wide acceptance of structural and initial conditions, and tunable unidirectionality, and becomes of practical interest.
收稿日期: 2013-05-24
出版日期: 2013-11-21
:
73.20.Mf
(Collective excitations (including excitons, polarons, plasmons and other charge-density excitations))
42.65.Ky
(Frequency conversion; harmonic generation, including higher-order harmonic generation)
42.70.Mp
(Nonlinear optical crystals)
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2013, Vol. 30 
