Universal switching of plasmonic signals using optical resonator modes[J]. LSA, 2017,6(2).
McPolin, C. P. T. et al. Universal switching of plasmonic signals using optical resonator modes. Light: Science & Applications, 6, e16237 (2017).
Universal switching of plasmonic signals using optical resonator modes[J]. LSA, 2017,6(2). DOI: 10.1038/lsa.2016.237.
McPolin, C. P. T. et al. Universal switching of plasmonic signals using optical resonator modes. Light: Science & Applications, 6, e16237 (2017). DOI: 10.1038/lsa.2016.237.
Universal switching of plasmonic signals using optical resonator modes
a novel mechanism for switching and modulating plasmonic signals based on a Fano interference process
which arises from the coupling between a narrow-band optical Fabry–Pérot cavity and a surface plasmon polariton (SPP) source. The SPP wave emitted from the cavity is actively modulated in the vicinity of the cavity resonances by altering the cavity Q-factor and/or resonant frequencies. We experimentally demonstrate dynamic SPP modulation both by mechanical control of the cavity length and all-optically by harnessing the ultrafast nonlinearity of the Au mirrors that form the cavity. An electro-optical modulation scheme is also proposed and numerically illustrated. Dynamic operation of the switch via mechanical means yields a modulation in the SPP coupling efficiency of ~80%
while the all-optical control provides an ultrafast modulation with an efficiency of 30% at a rate of ~0.6 THz. The experimental observations are supported by both analytical and numerical calculations of the mechanical
all-optical and electro-optical modulation methods.
关键词
Keywords
Fano resonancesoptical signal processingplasmonicsultrafast switching
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