Chinese Optics Letters, 2013, 11 (11): 112401, Published Online: Nov. 6, 2013
Highly ef ficient narrow-band plasmonic waveguide filter based on cascaded slot cavities Download: 899次
Abstract
A novel plasmonic waveguide filter design based on three cascaded slot cavities is proposed. The cascaded nanocavities support a united resonant (UR) mode. Light is trapped in the middle nanocavity at telecommunication wavelength (1550 nm) when the UR mode exists. This phenomenon leads to the efficient transmittance and high Q factor of the plasmonic filter. The resonant wavelength and Q factor can be easily modulated by the cavity radii and the waveguide width.
Zongqiang Chen, Jing Chen, Yudong Li, Jun Qian, Jiwei Qi, Jingjun Xu, Qian Sun. Highly ef ficient narrow-band plasmonic waveguide filter based on cascaded slot cavities[J]. Chinese Optics Letters, 2013, 11(11): 112401.