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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 49, Iss. 24 — Aug. 20, 2010
  • pp: 4494–4497

Compact terahertz wave polarizing beam splitter

Jiu-Sheng Li, De-gang Xu, and Jian-quan Yao  »View Author Affiliations


Applied Optics, Vol. 49, Issue 24, pp. 4494-4497 (2010)
http://dx.doi.org/10.1364/AO.49.004494


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Abstract

We designed a compact terahertz (THz) wave polarizing beam splitter based on a periodic bilayer structure, which operates over a wide THz wavelength range. Within a short length (about 1 mm ), this polarizing beam splitter separates THz wave TE- and TM-polarized modes into orthogonal output waveguides. Results of simulations with the finite-element method show that 99.99% of the TE-polarized THz wave is deflected by the periodic bilayer structure (with 39.9 dB extinction ratio), whereas 99.58% of the TM-polarized THz wave propagates through the structure (with a 23.7 dB extinction ratio). Tolerance analysis reveals a large tolerance to fabrication errors.

© 2010 Optical Society of America

OCIS Codes
(230.5440) Optical devices : Polarization-selective devices
(260.3090) Physical optics : Infrared, far

ToC Category:
Optical Devices

History
Original Manuscript: March 4, 2010
Revised Manuscript: May 28, 2010
Manuscript Accepted: July 9, 2010
Published: August 11, 2010

Citation
Jiu-Sheng Li, De-gang Xu, and Jian-quan Yao, "Compact terahertz wave polarizing beam splitter," Appl. Opt. 49, 4494-4497 (2010)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-49-24-4494


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