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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 18, Iss. 21 — Oct. 11, 2010
  • pp: 21725–21731

A novel broadband coaxial probe to parallel plate dielectric waveguide transition at THz frequency

Longfang Ye, Ruimin Xu, Zhihui Wang, and Weigan Lin  »View Author Affiliations

Optics Express, Vol. 18, Issue 21, pp. 21725-21731 (2010)

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In this paper, transmission characteristics of the fundamental mode (TE10) of Parallel-Plate Dielectric Waveguide (PPDW) at 0.4-1.0 THz (1 THz = 1012 Hz) are studied. The investigation results show PPDW with virtually low attenuation and remarkable simple structure is a promising candidate as THz transmission medium. Then, a novel broadband coaxial probe to PPDW transition is designed. Although coaxial probe excitation has been used in microstrip lines and rectangular waveguides in microwave, millimeter-wave frequency domain, the present study shows that it is also an effective method to excite the PPDW at THz frequency. As the investigation results show, the return loss of coax-PPDW transition is better than 20 dB from 0.45 THz to 0.75 THz, and the insertion loss is as low as 0.18 dB, which will have wide potential application in the terahertz regime.

© 2010 OSA

OCIS Codes
(120.7000) Instrumentation, measurement, and metrology : Transmission
(130.2790) Integrated optics : Guided waves
(230.7370) Optical devices : Waveguides
(040.2235) Detectors : Far infrared or terahertz

ToC Category:
Integrated Optics

Original Manuscript: August 17, 2010
Revised Manuscript: September 23, 2010
Manuscript Accepted: September 23, 2010
Published: September 29, 2010

Longfang Ye, Ruimin Xu, Zhihui Wang, and Weigan Lin, "A novel broadband coaxial probe to parallel plate dielectric waveguide transition at THz frequency," Opt. Express 18, 21725-21731 (2010)

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