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Comparative Terahertz Study of Rectangular Metal Waveguides With and Without a Ridge

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Abstract

We numerically and experimentally compared rectangular aluminum hollow-core waveguides with and without ridge regarding free-space coupling efficiency, dispersion, attenuation, and single-mode bandwidth for applications in terahertz technology. The ridge waveguide displays a wider single-mode bandwidth by a factor of 1.46 and reduced dispersion, but suffers from higher loss and attenuation due to increased field confinement. We numerically calculated the modes of both waveguide types and analyzed the electromagnetic properties which are in agreement with the measurement results.

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Acknowledgments

We acknowledge M. Stolze of the Photonik-Zentrum Kaiserslautern e.V. for the laser micro-machining of the waveguides.

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Authors and Affiliations

  1. Department of Electrical and Computer Engineering and Research Center OPTIMAS, University of Kaiserslautern, 67663, Kaiserslautern, Germany

    Marko Gerhard & Marco Rahm

  2. Department of Physics and Research Center OPTIMAS, University of Kaiserslautern, 67663, Kaiserslautern, Germany

    Rene Beigang

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  1. Marko Gerhard
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  2. Rene Beigang
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  3. Marco Rahm
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Correspondence to Marko Gerhard.

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Gerhard, M., Beigang, R. & Rahm, M. Comparative Terahertz Study of Rectangular Metal Waveguides With and Without a Ridge. J Infrared Milli Terahz Waves 36, 327–334 (2015). https://doi.org/10.1007/s10762-015-0145-9

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  • DOI: https://doi.org/10.1007/s10762-015-0145-9

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