Photonic crystals for on-off switching of sub-terahertz electromagnetic waves

We present a sub-terahertz wave on-off switch based on a two-dimensional photonic crystal (PC). The PC consists of a triangular hole array in high density polyethylene (HDPE). The holes are infiltrated with the nematic liquid crystal 5CB. The transmission of sub-terahertz electromagnetic waves is co...

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Bibliographic Details
Published in2008 33rd International Conference on Infrared, Millimeter and Terahertz Waves pp. 1 - 2
Main Authors Hasek, T., Ghattan, Z., Wilk, R., Shahabadi, M., Koch, M.
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.09.2008
Subjects
Electric fields
Electromagnetic scattering
Liquid crystals
Optical switches
Photonic band gap
Photonic crystals
Switches
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Summary:We present a sub-terahertz wave on-off switch based on a two-dimensional photonic crystal (PC). The PC consists of a triangular hole array in high density polyethylene (HDPE). The holes are infiltrated with the nematic liquid crystal 5CB. The transmission of sub-terahertz electromagnetic waves is controlled by an electric field-induced rotation of the nematic axis of the 5CB molecules. The measured extinction ratio of the switch is 13.3 dB at 91GHz. Experimental results are in good agreement with simulations.
ISBN:1424421195
9781424421190
ISSN:2162-2027
DOI:10.1109/ICIMW.2008.4665419