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Proceedings Paper

Broadband polarization beam splitter based on subwavelength grating in Terahertz
Author(s): Yelan Zhang; Yuyang Cheng; Kun Zhang; Caiyu Li; Weijin Kong
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Paper Abstract

We design a broadband polarization beam splitter (PBS) operating in the terahertz (THz) communication band 0.1THz-1.2THz. The transmittance of the TM mode is larger than 95%, in the meanwhile, the extinction ratio can even reach 49dB. Considering the unavoidable deformation in grating fabrication, we also check the performance of the PBS based on trapeziform grating. Results show that increasing the duty cycle while the slope angle diminishing can effectively increase the TM mode transmittance and the extinction ratio, which can compensate the affection induced by the geometric deformation. This design may achieve some potential applications in THz manipulation system.

Paper Details

Date Published: 8 July 2019
PDF: 7 pages
Proc. SPIE 11064, Tenth International Conference on Thin Film Physics and Applications (TFPA 2019), 110640J (8 July 2019); doi: 10.1117/12.2535633
Show Author Affiliations
Yelan Zhang, Qingdao Univ. (China)
Yuyang Cheng, Qingdao Univ. (China)
Kun Zhang, Qingdao Univ. (China)
Caiyu Li, Qingdao Univ. (China)
Weijin Kong, Qingdao Univ. (China)
Shandong Society for Optical Engineering (China)

Published in SPIE Proceedings Vol. 11064:
Tenth International Conference on Thin Film Physics and Applications (TFPA 2019)
Junhao Chu; Jianda Shao, Editor(s)

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