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  4. A terahertz time-domain spectroscopy-based network analyzer
 
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2015
  • Zeitschriftenaufsatz

Titel

A terahertz time-domain spectroscopy-based network analyzer

Abstract
We present a terahertz time-domain spectroscopy-based setup based on photoconductive antennas and a femtosecond fiber laser for measuring the transmission S parameters of electronic devices. To this end, radiation is focused into horn antennas attached to the waveguide-coupled devices under test and coupled out of the device using a similar setup. The terahertz emitter is fiber-coupled in order to allow for flexible selection the measurement geometry. As test cases, the S-21 parameters of several H band (220-330 GHz) amplifiers are measured and show promising results. Also, the response of a W band amplifier is measured, marking the lower frequency boundary for this setup. In both cases, the measurements are compared to measurements retrieved using a commercially available vector network analyzer with frequency extenders, showing rather good agreement. Transmission measurements of "thru" waveguides used as a reference imply our system's ability to measure up to at least 2.5 THz, widely exceeding the bandwidth of currently available network analyzers.
Author(s)
Rämer, Jan-Martin
Fraunhofer-Institut fĂ¼r Physikalische Messtechnik IPM
Freymann, Georg von
Zeitschrift
Journal of Lightwave Technology
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DOI
10.1109/JLT.2015.2388954
Language
Englisch
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IPM
Tags
  • network analyzer

  • rectangular waveguide...

  • time-domain spectrosc...

  • terahertz spectroscop...

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