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In brief - Short sharp link

17 July 2012

Photographs of the fabricated UTC-PD and SBD detector layout

24 Gbit/s data transmission in 300 GHz band for future terahertz communications
Electron. Lett. -- 19 July 2012 -- Volume 48, Issue 15, p.953–954

H.-J. Song (1),  K. Ajito (1), Y. Muramoto (2), A. Wakatsuki (2), T. Nagatsuma (3) and N. Kukutsu (1)
(1) NTT Microsystem Integraton Laboratories, Atsugi-shi, Japan
(2) NTT Photonics Laboratories, Atsugi-shi, Japan
(3) Osaka University, Graduate School of Engineering Science, Toyonaka, Japan

Presented is 24 Gbit/s wireless data transmission at 300 GHz using a uni-travelling carrier photodiode (UTC-PD) emitter and Schottky barrier diode detector, which were designed and fabricated for larger bandwidth. Both the emitter and the detector were fabricated on the same epi-layer of the UTC-PD. At the link distance of around 50 cm, a bit error rate of less than 1 ×10-10 has been achieved with the transmitted power from the UTC-PD of less than 200 µW and effective antenna gains of 40 and 35 dBi in the emitter and detector sides, respectively.

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