Title

Impact of metal nano-grating phase-shift on plasmonic MSM photodetectors

Document Type

Conference Proceeding

Faculty

Faculty of Health, Engineering and Science

School

School of Engineering

Comments

Originally published as Das, N., Karar, A., Tan, C. L., Alameh, K., & Lee, Y. T. (2010). Impact of metal nano-grating phase-shift on plasmonic MSM photodetectors. Paper presented at the 7th International Symposium on High-capacity Optical Networks and Enabling Technologies,19-21 Dec. 2010. Original article available here.

Abstract

In this paper, finite difference time-domain (FDTD) method is used to simulate the light absorption enhancement in a plasmonic metal-semiconductor-metal photodetector (MSM-PD) structure employing a metal nano-grating with phase-shifts. The metal fingers of the MSM-PDs are etched with appropriate depths to maximize light absorption through plasmonic effects into a subwavelength aperture. Simulation results show that the nano-grating phase-shift red-shifts the wavelength at which the light absorption enhancement maximum, and that the combined effects of the nano-grating groove shape and the nano-grating phase-shift, degrade the light absorption enhancement by up to 50%.

DOI

10.1109/HONET.2010.5715752

 

Link to publisher version (DOI)

10.1109/HONET.2010.5715752