Title :
A novel nano-scale polarizer based on surface plasmon
Author :
Zhou Kuo ; Yang Junbo ; Yang Jiankun ; Li Xiujian ; Jia Hui ; Xu Suzhi ; Xu Jia
Author_Institution :
Coll. of Sci., Nat. Univ. of Defense Technol., Changsha, China
Abstract :
A novel nanoscale polarizer based on surface plasmon polaritons is proposed by adding a silver nanoribbon to a traditional waveguide directional coupler. The novel polarizer can realize the polarization output of the TE mode with the characteristics of high extinction ratio and extremely compact dimension. The influences of the polarizer parameters including the length of coupling region, the width of silver nanoribbon, wavelength and the angle of the output light on the TE mode and TM mode coupling efficiency are discussed. Simulation results indicate that the extinction ratio of TE mode can reach 15 dB at the wavelength of 1550nm.
Keywords :
light polarisation; nanophotonics; nanoribbons; optical directional couplers; optical polarisers; optical waveguides; polaritons; silver; surface plasmons; Ag; TE mode coupling efficiency; TM mode coupling efficiency; coupling region; extinction ratio; nanoscale polarizer; output light angle; output light wavelength; polarization output; polarizer parameters; silver nanoribbon width; surface plasmon polaritons; waveguide directional coupler; wavelength 1550 nm; Couplings; Directional couplers; Optical coupling; Optical polarization; Optical surface waves; Optical waveguides; Plasmons; Polarizer; directional coupler; finite-difference time-domain; surface plasmon polaritons;
Conference_Titel :
Signal Processing, Communication and Computing (ICSPCC), 2013 IEEE International Conference on
Conference_Location :
KunMing
DOI :
10.1109/ICSPCC.2013.6664062
