Title :
Silicon-based, ultra-thin, flexible optically tunable metamaterial-bandpass filter in the THz-regime
Author :
Hoeh, Michael A. ; Neu, Jens ; Schmitt, Klemens M. ; Rahm, Marco
Author_Institution :
Dept. of Electr. & Comput. Eng., OPTIMAS Univ. of Kaiserslautern, Kaiserslautern, Germany
Abstract :
We present a new fabrication technique for silicon-based optically tunable metamaterial membranes. The realized bandpass filter is only 25 μm thick, enabling quasi etalon-free performance. The maximal amplitude transmission of the filter was 80 %, and an amplitude modulation depth of 94 % was achieved at 0.65THz using a 500mW strong modulation laser.
Keywords :
amplitude modulation; band-pass filters; elemental semiconductors; optical fabrication; optical filters; optical metamaterials; optical modulation; silicon; submillimetre wave filters; terahertz metamaterials; Si; THz-regime; amplitude modulation laser; frequency 0.65 THz; maximal amplitude transmission; optical fabrication technique; optically tunable metamaterial membrane; power 500 mW; quasietalon-free performance; size 25 mum; ultrathin flexible optically tunable metamaterial-bandpass filter; Band-pass filters; Laser beams; Metamaterials; Optical device fabrication; Optical filters; Optical modulation; Silicon;
Conference_Titel :
Infrared, Millimeter, and Terahertz waves (IRMMW-THz), 2014 39th International Conference on
Conference_Location :
Tucson, AZ
DOI :
10.1109/IRMMW-THz.2014.6956161
