Fabrication method of small-diameter hollow waveguides for terahertz waves

Shunsuke Sato, Takashi Katagiri, Yuji Matsuura

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)


To develop a thin and flexible hollow waveguide for terahertz (THz) waves that can be applied to endoscopic applications, a new (to our knowledge) fabrication method is proposed in which thin polymer tubing is first drawn and then a silver layer is formed on the outside of the tubing. By using this method, a thick dielectric layer, which was difficult to form by liquid-phase deposition, is easily obtained with high accuracy in the thickness. A transmission loss at 1.5 THz measured by a Fourier transform IR spectrometer was 3.0 dB for a 50 cm long, 1 mm inner-diameter waveguide. It is shown that the transmission losses are not affected by the bending of the waveguide when the bending radius is larger than around 10 cm.

Original languageEnglish
Pages (from-to)3006-3009
Number of pages4
JournalJournal of the Optical Society of America B: Optical Physics
Issue number11
Publication statusPublished - 2012 Nov 1

ASJC Scopus subject areas

  • Statistical and Nonlinear Physics
  • Atomic and Molecular Physics, and Optics


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