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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 13, Iss. 25 — Dec. 12, 2005
  • pp: 10416–10423

Wireless audio and burst communication link with directly modulated THz photoconductive antenna

Tze-An Liu, Gong-Ru Lin, Yung-Cheng Chang, and Ci-Ling Pan  »View Author Affiliations

Optics Express, Vol. 13, Issue 25, pp. 10416-10423 (2005)

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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 μs. 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.

© 2005 Optical Society of America

OCIS Codes
(060.4080) Fiber optics and optical communications : Modulation
(060.4510) Fiber optics and optical communications : Optical communications
(260.3090) Physical optics : Infrared, far
(320.7080) Ultrafast optics : Ultrafast devices
(320.7160) Ultrafast optics : Ultrafast technology

ToC Category:
Research Papers

Tze-An Liu, Gong-Ru Lin, Yung-Cheng Chang, and Ci-Ling Pan, "Wireless audio and burst communication link with directly modulated THz photoconductive antenna," Opt. Express 13, 10416-10423 (2005)

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