Enhancement of light absorption by Au L/S grating for thin SOI photodetector

Author

Satoh, Hiroaki ; Inokawa, Hiroshi

Author_Institution

Res. Inst. of Electron. Eng., Shizuoka Univ., Hamamatsu, Japan

fYear

2008

fDate

15-16 June 2008

Firstpage

1

Lastpage

2

Abstract

This paper proposes a silicon-on-insulator (SOI) photodetector with gold (Au) line and space. (L/S) grating, which enhances light absorption via optical near-field by surface plasmon (SP) around the grating. Behavior of the enhanced light absorption for various grating widths, adjustment of the peak absorption wavelength, and dependence on the polarization of the incident light are discussed based on the electromagnetic simulations.

Keywords

diffraction gratings; finite difference time-domain analysis; gold; light polarisation; photodetectors; silicon-on-insulator; surface plasmons; Au; electromagnetic simulations; finite difference-time domain method; incident light polarization; light absorption; line-space grating; optical near-field absorption; silicon-on-insulator; surface plasmon; thin semiconductor SOI photodetector; Electromagnetic scattering; Electromagnetic wave absorption; Electromagnetic wave polarization; Gold; Gratings; Optical polarization; Optical surface waves; Photodetectors; Plasmons; Silicon on insulator technology;

fLanguage

English

Publisher

ieee

Conference_Titel

Silicon Nanoelectronics Workshop, 2008. SNW 2008. IEEE

Conference_Location

Honolulu, HI

Print_ISBN

978-1-4244-2071-1

Type

conf

DOI

10.1109/SNW.2008.5418468

Filename

5418468