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Proceedings Paper

Waveguide and antenna coupled travelling-wave 1.55-μm photodetectors for optical (sub)millimeter-wave generation
Author(s): Andrei Malcoci; Andreas Stohr; Andres Sauerwald; Sven Schulz; Dieter Jager
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Paper Abstract

This paper will report on continuous (sub-)millimetre-wave (cw) generation by photomixing two laser signals at around 1.55μm in ultrafast InAlAs/InGaAs(P) travelling-wave photodetectors (TW-PD). At first TW-PD's are characterised up to 160GHz mm-wave frequency using conventional MMW equipment. Further, photonic THz transmitters with integrated planar slot and bow-tie antenna structures for quasi optical free space coupling will be presented. Resonant slot antenna coupled TW-PD exhibit sufficient power for replacing the 460GHz solid-state-LO of an SIS-based heterodyne receiver while the equivalent device with integrated bow-tie antenna operates in a very broadband frequency range between 20 and 620GHz. Next we report on waveguide coupled TW-PD's and show experimental results in a wide frequency range, up to 1THz. Finally, several low-cost strategies for enhancing the available power as well as the efficiency will be presented.

Paper Details

Date Published: 1 September 2004
PDF: 8 pages
Proc. SPIE 5466, Microwave and Terahertz Photonics, (1 September 2004); doi: 10.1117/12.548966
Show Author Affiliations
Andrei Malcoci, Univ. Duisburg-Essen (Germany)
Andreas Stohr, Univ. Duisburg-Essen (Germany)
Andres Sauerwald, Univ. Duisburg-Essen (Germany)
Sven Schulz, Univ. Duisburg-Essen (Germany)
Dieter Jager, Univ. Duisburg-Essen (Germany)

Published in SPIE Proceedings Vol. 5466:
Microwave and Terahertz Photonics
Andreas Stohr; Dieter Jager; Stavros Iezekiel, Editor(s)

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