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Proceedings Paper

Towards integrated continuous wave THz systems
Author(s): Thorsten Göbel; Dennis Stanze; Ute Troppenz; Jochen Kreissl; Bernd Sartorius; Martin Schell
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Paper Abstract

We present a photonic integrated circuit, which enables the full control of the THz signal in continuous wave photomixing THz systems via standard electronics. The device comprises two DFB-lasers and an optical phase modulator on a single chip. Due to a unique bidirectional operation technique, the chip provides the optical beat signal for both THz emitter and THz receiver and allows for manipulation of the THz phase via the optical phase modulator. To evaluate the performance of our solution, we realize a coherent cw THz system based on our photonic integrated circuit and compare it to discrete lasers and standard components. As the results show, both setups feature an identical signal-to-noise ratio, reaching 50 dB at a frequency of 1 THz for an integration time of 500 ms. This is the best reported performance of CW photomixing systems running at 1.5 μm optical wavelength.

Paper Details

Date Published: 27 March 2013
PDF: 6 pages
Proc. SPIE 8624, Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications VI, 86240L (27 March 2013); doi: 10.1117/12.2001521
Show Author Affiliations
Thorsten Göbel, Fraunhofer-Institut für Nachrichtentechnik Heinrich-Hertz-Institut (Germany)
Dennis Stanze, Fraunhofer-Institut für Nachrichtentechnik Heinrich-Hertz-Institut (Germany)
Ute Troppenz, Fraunhofer-Institut für Nachrichtentechnik Heinrich-Hertz-Institut (Germany)
Jochen Kreissl, Fraunhofer-Institut für Nachrichtentechnik Heinrich-Hertz-Institut (Germany)
Bernd Sartorius, Fraunhofer-Institut für Nachrichtentechnik Heinrich-Hertz-Institut (Germany)
Martin Schell, Fraunhofer-Institut für Nachrichtentechnik Heinrich-Hertz-Institut (Germany)


Published in SPIE Proceedings Vol. 8624:
Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications VI
Laurence P. Sadwick; Créidhe M. O'Sullivan, Editor(s)

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