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首页> 外文期刊>Optics Letters >Refractive index dependence of the coupling characteristics between long-range surface-plasmon-polariton and dielectric waveguide modes
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Refractive index dependence of the coupling characteristics between long-range surface-plasmon-polariton and dielectric waveguide modes

机译:远距离表面等离子体激元与介电波导模之间耦合特性的折射率依赖性

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摘要

The coupling characteristics of a hybrid coupler comprised of a long-range surface-plasmon-polariton (LRSPP) waveguide and a dielectric waveguide is analyzed with different detecting layers. Calculation results show that the coupling strength between the LRSPP mode and the dielectric-waveguide mode is rather sensitive to the refractive index of the detecting layer. This is promising to realize an integrated refractive index senor with high resolution better than 4 X 10~(-7) refractive index units or a modulator with rather low driving power and insert loss.
机译:用不同的检测层分析了由远距离表面等离子体激元(LRSPP)波导和介质波导组成的混合耦合器的耦合特性。计算结果表明,LRSPP模式和介质波导模式之间的耦合强度对检测层的折射率相当敏感。这有望实现具有比4 X 10〜(-7)折射率单位更好的高分辨率的集成折射率传感器或具有相当低的驱动功率和插入损耗的调制器。

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