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- Title
Double-use linear polarization convertor using hybrid metamaterial based on VO<sub>2</sub> phase transition in the terahertz region.
- Authors
Zou, Huanling; Xiao, Zhongyin; Li, Wei; Li, Chuan
- Abstract
A number of polarization convertors based on metamaterials(MMs) have been investigated recently, but no one has proposed a high-efficiency linear polarization transformer both in transmission and reflection modes. Here, a bilayered MM embedded with vanadium dioxide (VO2) composed of a pair of sloping gold patches, bottom hybrid layer and a dielectric spacer is proposed as a double-use linear polarization convertor. It has been demonstrated numerically that this device has advantages of switching between transmission polarization conversion and reflection polarization conversion based on the phase transition of the VO2 film in the terahertz (THz) regime and the polarization conversion ratios (PCR) in both cases are higher than 90% in wide bands. The simulated linear polarization transmission/reflection coefficients and the surface current distributions give insight into the mechanism of the linear polarization conversions. Moreover, the physical mechanism of polarization sensitivity of the designed structure is investigated by the distributions of electric field. The proposed double-use linear polarization convertor shows great prospects in polarization imaging, and polarized light communications.
- Subjects
POLARIZATION (Nuclear physics); METAMATERIALS
- Publication
Applied Physics A: Materials Science & Processing, 2018, Vol 124, Issue 4, p1
- ISSN
0947-8396
- Publication type
Article
- DOI
10.1007/s00339-018-1740-0