Title :
Tunable subwavelength terahertz plasmonic stub waveguide filters
Author :
Jin Tao ; Qi Jie Wang ; Bin Hu ; Xiao Yong He ; Ying Zhang
Author_Institution :
Div. of Microelectron., Nanyang Technol. Univ., Singapore, Singapore
Abstract :
Tunable subwavelength terahertz plasmonic stub waveguide filters based on indium antimonide are proposed and numerically investigated. The transmission line theory and the Finite Different Time Domain simulation results reveal that the single-stub waveguide structure can realize a stop-band filtering function and the central wavelength of the notch is linearly dependent on the stub length while nonlinearly dependent on the stub width. The central wavelength of the notch can be actively controlled by tuning the temperature. The proposed filters may have applications in THz highly-integrated plasmonic circuits.
Keywords :
finite difference time-domain analysis; notch filters; plasmonics; submillimetre wave filters; transmission line theory; waveguide filters; THz highly-integrated plasmonic circuit; finite different time domain simulation; indium antimonide; notch central wavelength; single-stub waveguide structure; stop-band filtering function; stub length; stub width; temperature tuning; transmission line theory; tunable subwavelength terahertz plasmonic stub waveguide filter; Optical filters; Optical waveguides; Periodic structures; Permittivity; Plasmons;
Conference_Titel :
Nanoelectronics Conference (INEC), 2013 IEEE 5th International
Conference_Location :
Singapore
Print_ISBN :
978-1-4673-4840-9
Electronic_ISBN :
2159-3523
DOI :
10.1109/INEC.2013.6466076