標題: Vertical plasmonic resonance coupler
作者: Hsu, Yi-Jang
Lai, Yinchieh
光電工程學系
光電工程研究所
Department of Photonics
Institute of EO Enginerring
公開日期: 12-Jan-2015
摘要: Efficient wavelength-selective coupling of lights between subwavelength plasmonic waveguides and free space is theoretically investigated. The idea is based on a new type of vertical resonance coupling devices built on plasmonic metal/insulator/metal (MIM)waveguides. The device structure consists of a vertical grating coupler in a resonance cavity formed by two distributed Bragg reflectors (DBRs). With the metal loss included, maximum coupling efficiency around 50% can be obtained at the 1550 nm wavelength with a filtering 3dB bandwidth around 20 nm (7nm for the lossless case), demonstrating the feasibility of the idea for achieving high efficiency wavelength-selective vertical coupling through optical resonance. By utilizing this coupler, a plasmonic add-drop device is proposed and theoretically demonstrated. This kind of compact wavelength selective coupling devices shall have the potential to open up a new avenue of photonics circuitry at nanoscale. (C) 2015 Optical Society of America
URI: http://dx.doi.org/10.1364/OE.23.000292
http://hdl.handle.net/11536/124384
ISSN: 1094-4087
DOI: 10.1364/OE.23.000292
期刊: OPTICS EXPRESS
Volume: 23
Issue: 1
起始頁: 292
結束頁: 300
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