Transcription of Terahertz Waves for Communications and Sensing
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Terahertz Waves for Communications and Sensing
348 JOHNS HOPKINS APL TECHNICAL DIGEST, VOLUME 25, NUMBER 4 (2004)M. J. FITCH AND R. OSIANDERTT erahertz Waves for Communications and SensingMichael J. Fitch and Robert Osianderhe development of technology in the THz frequency band has seen rapid progress recently. Considered as an extension of the microwave and millimeter wave bands, the THz frequency offers greater Communications bandwidth than is available at microwave frequencies. The development of sources and detectors for this frequency range has been driven by other applications such as spectroscopy, imaging, and impulse ranging. Only recently modulators and fi lters have been added to enable the development of communi-cations applications. APL s contributions to date in THz research have been primarily in the areas of spectroscopy and imaging. This article gives an overview of THz technology for Communications and Sensing applications, with some discussion of the sources, detec-tors, and modulators needed for a practical THz Communications recently, the THz (1012 Hz) region of the elec-tromagnetic spectrum from about 100 GHz to 10 THz has been almost inaccessible because of the lack of effi -cient sources and detectors in this THz gap.
348 JOHNS HOPKINS APL TECHNICAL DIGEST, VOLUME 25, NUMBER 4 (2004) M. J. FITCH AND R. OSIANDER T Terahertz Waves for Communications and Sensing Michael J. Fitch and Robert Osiander
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