7 March 2014 Plasmonic gap mode nanocavities at telecommunication wavelengths
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Abstract
We analyze a plasmonic gap-mode Fabry-Perot nanocavity containing a metallic nanowire. The proper choice of the cladding layer brings about a decent confinement inside the active region for the fundamental and first-order plasmonic gap modes. We numerically extract the reflectivity of the fundamental and first-order mode and obtain the optical field inside the cavity. We also study the dependence of the reflectivity on the thickness of Ag reflectors and show that a decent reflectivity above 90 % is achievable. For such cavities with a cavity length approaching 1.5 μm, a quality factor near 150 and threshold gain lower than 1500 cm−1 are achievable.
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Pi-Ju Cheng, Chen-Ya Weng, Shu-Wei Chang, Tzy-Rong Lin, Chung-Hao Tien, "Plasmonic gap mode nanocavities at telecommunication wavelengths", Proc. SPIE 8980, Physics and Simulation of Optoelectronic Devices XXII, 89801Y (7 March 2014); doi: 10.1117/12.2038718; https://doi.org/10.1117/12.2038718
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