Title: Wireless audio and burst communication link with directly modulated THz photoconductive antenna
Authors: Liu, TA
Lin, GR
Chang, YC
Pan, CL
Department of Photonics
Issue Date: 12-Dec-2005
Abstract: We demonstrate transmission of audio and burst signals through a prototype THz analog communication link employing laser-gated low-temperature-grown GaAs dipole antenna as THz emitter and receiver. The transmission distance is about 100 cm. By using a direct voltage modulation format, we successfully demodulated a burst signal with a rising time of 41 mu s. The corresponding modulating bandwidth achieved was 23 kHz in this first experiment. Noise analysis reveals a 10% power fluctuation in the received signal with on-off extinction ratio of greater than 1000. The transmission of a six-channel analog and burst audio signal with least distortion is also demonstrated. We further demonstrate the fidelity of the transmission of a melody through the THz link with and without any amplification.
URI: http://dx.doi.org/10.1364/OPEX.13.010416
ISSN: 1094-4087
DOI: 10.1364/OPEX.13.010416
Volume: 13
Issue: 25
Begin Page: 10416
End Page: 10423
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