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Chinese Optics Letters

Chinese Optics Letters


  • Vol. 8, Iss. 11 — Nov. 1, 2010
  • pp: 1057–1060

Analysis of terahertz waveguide modes in continuous wavelet domain

Jianqiang Gu, Zhen Tian, Qirong Xing, Changlei Wang, Yanfeng Li, Feng Liu, Lu Chai, and Chingyue Wang  »View Author Affiliations

Chinese Optics Letters, Vol. 8, Issue 11, pp. 1057-1060 (2010)

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Conventional analytical methods in the wavelet domain are used to present an analysis of terahertz (THz) waveguide modes. To obtain THz radiation pulses passing through a waveguide, we build a simple experimental system with a 5-mm-long, 230-\mum-inner-diameter stainless steel waveguide. The single-mode guided signal from the experiments and the multi-mode signal of a similar THz waveguide reported in the literature are analyzed using the continuous wavelet transform (CWT). The results demonstrate that analyzing THz waveguide modes in the wavelet domain not only possesses all the functionality of the traditional THz time-domain spectroscopy (TDS) data processing but also has the ability to unscramble quantitatively and intuitively detailed information about the target samples, such as mode type, cut-off frequency, amplitude distinction, and group velocity.

© 2010 Chinese Optics Letters

OCIS Codes
(230.7370) Optical devices : Waveguides
(300.6495) Spectroscopy : Spectroscopy, teraherz

Jianqiang Gu, Zhen Tian, Qirong Xing, Changlei Wang, Yanfeng Li, Feng Liu, Lu Chai, and Chingyue Wang, "Analysis of terahertz waveguide modes in continuous wavelet domain," Chin. Opt. Lett. 8, 1057-1060 (2010)

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