High Fill-Factor Substrate-Based Wire-Grid Polarizers With High Extinction Ratios
Document Type
Article
Publication Date
5-1-2014
Identifier/URL
40254597 (Pure); 84900506887 (QABO)
Abstract
Low-cost, substrate-based, millimeter-wave-to-THz wire-grid polarizers have been fabricated on crystalline-quartz substrates using planar processing techniques. The polarizers achieve high extinction ratios (at least 60 dB) with a single layer, while maintaining low insertion loss (a few decibels) by taking advantage of previously under-utilized “spoof” surface-plasmon effects. Full-wave finite-element simulations done with High Frequency Structure Simulator and experiments both show that metal fill-factors upwards of 90% greatly improve polarizer extinction ratio. The extinction ratio of high fill-factor polarizers exceeds that of a commercial free-standing wire grid by up to 20 dB at normal incidence.
Repository Citation
Zhang, W.,
Brown, E. R.,
Viveros, L.,
Burris, K. P.,
& Neal Stewart, C.
(2014). High Fill-Factor Substrate-Based Wire-Grid Polarizers With High Extinction Ratios. IEEE Transactions on Terahertz Science and Technology, 4 (3), 376-382.
https://corescholar.libraries.wright.edu/physics/1199
DOI
10.1109/TTHZ.2014.2313959
