Broadband spectroscopy of polymer waveguide and its sensing applications in the THz region
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Beijing Institute of Techonology, Beijing, China,Tsinghua National Laboratory for Information Science and Technology,State Key Laboratory on Integrated Optoelectronics,Department of Electronic Engineering,Tsinghua University,Beijing Key Laboratory for Terahertz Spectroscopy and Imaging,Key Laboratory of Terahertz Optoelectronics,Ministry of Education,Department of Physics,Capital Normal University,Beijing, China,Beijing Key Laboratory for Terahertz Spectroscopy and Imaging,Key Laboratory of Terahertz Optoelectronics,Ministry of Education,Department of Physics,Capital Normal University,Beijing, China,Tsinghua National Laboratory for Information Science and Technology,State Key Laboratory on Integrated Optoelectronics,Department of Electronic Engineering,Tsinghua University,Beijing Key Laboratory for Terahertz Spectroscopy and Imaging,Key Laboratory of Terahertz Optoelectronics,Ministry of Education,Department of Physics,Capital Normal University,Beijing, China

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    Abstract:

    A broadband spectroscopy of anti-resonant waveguides in the terahertz region was investigated. The broadband spectral transmission properties of a poly(methylmethacrylate) (PMMA) pipe waveguide, a PMMA self-supporting waveguide, and a SiO2 pipe waveguide were studied using terahertz time domain spectroscopy (THz-TDS). The existence of the anti-resonance phenomenon was demonstrated. Additionally, the PMMA self-supporting waveguide has been experimentally shown to realize transmission bandwidth of over 2 THz without dip frequencies. Also, based on the anti-resonance mechanism, the dielectric pipe waveguide was successfully used as a terahertz refractive index sensor for liquid sensing, which offers a possible method for materials detection.

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LIU Jing, XIAO Ming-Fei, SHEN Jing-Ling, ZHANG Bo, ZHANG Wei, ZHANG Cun-Lin. Broadband spectroscopy of polymer waveguide and its sensing applications in the THz region[J]. Journal of Infrared and Millimeter Waves,2016,35(5):525~529

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History
  • Received:January 07,2016
  • Revised:April 19,2016
  • Adopted:April 19,2016
  • Online: October 05,2016
  • Published:
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