Broadband characterization of THz frequency high fill-factor substrate-based wire-grid polarizers with high extinction ratios

Recent simulation and experimental work has resulted in the realization of low-cost, substrate-based, THz wire-grid polarizers fabricated on crystalline-quartz substrates that exhibit both high extinction ratios and low insertion losses. The broad bandwidth performance of these high fill-factor wire...

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Bibliographic Details
Main Authors: Hendrix, R. M., Middendorf, John R., Cetnar, John S., Deibel, Jason A., Brown, Elliott R.
Format: Conference Proceeding
Language:English
Subjects:
Broadband communication
Electric fields
Extinction ratio
Optical polarization
Substrates
Time-domain analysis
Wires
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Summary:Recent simulation and experimental work has resulted in the realization of low-cost, substrate-based, THz wire-grid polarizers fabricated on crystalline-quartz substrates that exhibit both high extinction ratios and low insertion losses. The broad bandwidth performance of these high fill-factor wire-grid polarizers are characterized using terahertz time-domain spectroscopic techniques over a frequency range spanning from 0.25 to 2 THz. The polarizers exhibited extinction ratios as high as 50 dB at low frequencies and 30 dB at higher ones.
ISSN:2162-2027
DOI:10.1109/IRMMW-THz.2014.6956414