Plasmonic gap mode nanocavities at telecommunication wavelengths

Pi-Ju Cheng; Chen-Ya Weng; Shu-Wei Chang; Tzy-Rong Lin; Chung-Hao Tien

doi:10.1117/12.2038718

7 March 2014 Plasmonic gap mode nanocavities at telecommunication wavelengths

Pi-Ju Cheng, Chen-Ya Weng, Shu-Wei Chang, Tzy-Rong Lin, Chung-Hao Tien

Proceedings Volume 8980, Physics and Simulation of Optoelectronic Devices XXII; 89801Y (2014) https://doi.org/10.1117/12.2038718
Event: SPIE OPTO, 2014, San Francisco, California, United States

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.

Citation Download Citation

Pi-Ju Cheng, Chen-Ya Weng, Shu-Wei Chang, Tzy-Rong Lin, and Chung-Hao Tien "Plasmonic gap mode nanocavities at telecommunication wavelengths", Proc. SPIE 8980, Physics and Simulation of Optoelectronic Devices XXII, 89801Y (7 March 2014); https://doi.org/10.1117/12.2038718

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