Tunable polarization response of a planar asymmetric-spiral infrared antenna

We present measurements at 10.6 microm that demonstrate electronic tuning of the polarization response of asymmetric-spiral infrared antennas connected to Ni-NiO-Ni diodes. Continuous variation of the bias voltage applied to the diode results in a rotation of the principal axis of the polarization e...

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Bibliographic Details
Published inOptics letters Vol. 23; no. 24; p. 1912
Main Authors Boreman, G D, Fumeaux, C, Herrmann, W, Kneubühl, F K, Rothuizen, H
Format Journal Article
LanguageEnglish
Published United States 15.12.1998
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Summary:We present measurements at 10.6 microm that demonstrate electronic tuning of the polarization response of asymmetric-spiral infrared antennas connected to Ni-NiO-Ni diodes. Continuous variation of the bias voltage applied to the diode results in a rotation of the principal axis of the polarization ellipse of the spiral antenna. A 90 degrees tuning range is measured for a bias voltage that varies from -160 to +160 mV .This effect is caused by a small asymmetry of the deposited diode contact or by a variation of the detector capacitance with the applied bias voltage.
ISSN:0146-9592
DOI:10.1364/OL.23.001912