Multifrequency on-off modulation and slow light characterization of the patterned black phosphorus metamaterial based on dual plasmon-induced transparency.
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引用次数: 0
Abstract
We present a monolayer patterned black phosphorus (BP) metamaterial for generating a tunable dual plasmon-induced transparency (PIT). We have derived the expression for the theoretical transmittance by introducing the coupled mode theory (CMT), and the calculated results of the expression highly overlap with the simulation results. The quarterly frequency synchronous switch with two different operating bands is designed by the carrier density and scattering rate on the dual PIT modulation effect. Two parameters were selected as important markers to show the performance of the optical switch: the modulation depth (MD) and the insertion loss (IL). The theoretical analysis of this structure shows that the higher modulation depth (5.45dB<MD<12.06dB) and lower insertion loss (0.60dB<IL<0.22dB) of these switches are of good application. In addition, we found the slow light properties of the structure were excellent with a group index of up to 219. This work provides a theoretical basis to prepare multifrequency optical switch and optical buffer devices.
我们提出了一种单层图案黑磷(BP)超材料,用于产生可调谐的双等离子体诱导透明(PIT)。引入耦合模理论(CMT)导出了理论透光率表达式,其计算结果与仿真结果高度重合。利用载波密度和散射率对双PIT调制效应的影响,设计了两种不同工作频带的季度频率同步开关。选择调制深度(MD)和插入损耗(IL)两个参数作为表征光开关性能的重要指标。对该结构的理论分析表明,该开关具有较高的调制深度(5.45d BI Ld B)和较低的插入损耗(0.60d BI Ld B),具有良好的应用前景。此外,我们发现该结构具有优异的慢光性能,基团指数高达219。为制备多频光开关和光缓冲器件提供了理论依据。
期刊介绍:
The Journal of the Optical Society of America A (JOSA A) is devoted to developments in any field of classical optics, image science, and vision. JOSA A includes original peer-reviewed papers on such topics as:
* Atmospheric optics
* Clinical vision
* Coherence and Statistical Optics
* Color
* Diffraction and gratings
* Image processing
* Machine vision
* Physiological optics
* Polarization
* Scattering
* Signal processing
* Thin films
* Visual optics
Also: j opt soc am a.