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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 1 — Jan. 3, 2011
  • pp: 162–167

Application of metal-clad antiresonant reflecting hollow waveguides to tunable terahertz notch filter

Ja-Yu Lu, Hao-Zai Chen, Chih-Hsien Lai, Hung-Chun Chang, Borwen You, Tze-An Liu, and Jin-Long Peng  »View Author Affiliations

Optics Express, Vol. 19, Issue 1, pp. 162-167 (2011)

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A novel tunable terahertz notch filter is demonstrated using antiresonant reflecting hollow waveguides with movable metal layers outside dielectric claddings. Based on the Fabry-Pérot resonance of the dielectric cladding, multiple deep notches are observed in a broad THz transmission spectrum. Continuous shift of notch frequencies is for the first time experimentally observed by lateral translation of metal layers from dielectric claddings. The measured maximum frequency-tuning-range approached 60GHz, equaling to 50% of the bandwidth of every passband, and a 20dB rejection notch-depth with a linewidth as narrow as 6GHz at frequency of around 0.2THz was also achieved. Numerical simulations match the measurements and verify the spectral-tuning mechanism.

© 2010 OSA

OCIS Codes
(050.2230) Diffraction and gratings : Fabry-Perot
(230.7390) Optical devices : Waveguides, planar
(300.6495) Spectroscopy : Spectroscopy, teraherz
(230.7408) Optical devices : Wavelength filtering devices

ToC Category:
Optical Devices

Original Manuscript: October 26, 2010
Revised Manuscript: December 9, 2010
Manuscript Accepted: December 10, 2010
Published: December 22, 2010

Ja-Yu Lu, Hao-Zai Chen, Chih-Hsien Lai, Hung-Chun Chang, Borwen You, Tze-An Liu, and Jin-Long Peng, "Application of metal-clad antiresonant reflecting hollow waveguides to tunable terahertz notch filter," Opt. Express 19, 162-167 (2011)

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