Title :
Mid-Infrared Optical Amplifier utilizing Traveling Plasmons in Si-based Photonic Crystal Cavities
Author :
Lin, Shiyun ; Wada, Kazumi
Author_Institution :
Dept. of Mater. Eng., Tokyo Univ., Tokyo
Abstract :
Designing of a novel mid-infrared optical amplifier utilizing direct interaction between traveling plasmons and optical wave is proposed. To achieve a higher gain coefficient we have employed two-dimensional (2D) photonic crystals to reduce a group velocity of light up to the traveling plasmon velocity in the amplifier. A 2D-FDTD simulation shows a group velocity of light to be mid 105 m/s in the photonic crystal cavity. A maximal gain coefficient of 78 dB can be achieved arisen from the proximate velocities of light and electrons. This compact tunable optical amplifier can play a vital role in the mid-infrared spectroscopy.
Keywords :
elemental semiconductors; finite difference time-domain analysis; infrared sources; integrated optics; photonic crystals; plasmons; silicon; 2D-FDTD simulation; Si; Si-based photonic crystal; gain coefficient; midinfrared optical amplifier; midinfrared spectroscopy; optical wave; photonic crystal cavities; traveling plasmons; tunable optical amplifier; two-dimensional photonic crystals; Biomedical optical imaging; Electrodes; Electron optics; Optical amplifiers; Optical resonators; Optical waveguides; Photonic crystals; Plasmons; Semiconductor optical amplifiers; Stimulated emission;
Conference_Titel :
Group IV Photonics, 2007 4th IEEE International Conference on
Conference_Location :
Tokyo
Print_ISBN :
978-1-4244-0934-1
DOI :
10.1109/GROUP4.2007.4347724
