27 August 2010 Photonic generation of continuous terahertz waves and its application to sensing and communications
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Abstract
We show that phohtonic technologies developed for conventional fiber-optic communications have potential for use in contemporary terahertz-wave applications, such as remote sensing and wireless communications. Advanced unitravelling photodiodes (UTC-PDs) can produce output power of 0.5 mW at 350 GHz and 10 μW at 1 THz. Using the UTC-PD and other optical devices, we demonstrate a time-continuous terahertz-wave signal generator that can tune the output signal over a wide frequency range with very narrow spectral linewidth and gas-sensing with the terahertz-wave source. We also show some preliminary results for terahertz-wave wireless communications using photonic technologies.
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Ho-Jin Song, Naofumi Shimizu, Yuichi Kado, Tadao Nagatsuma, "Photonic generation of continuous terahertz waves and its application to sensing and communications", Proc. SPIE 7763, Terahertz Emitters, Receivers, and Applications, 776307 (27 August 2010); doi: 10.1117/12.861731; https://doi.org/10.1117/12.861731
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