Optically Powered Video Camera Network

Conference: Kommunikationskabelnetze - 13. ITG-Fachtagung
12/12/2006 - 12/13/2006 at Köln, Germany

Proceedings: Kommunikationskabelnetze

Pages: 2Language: englishTyp: PDF

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Böttger, G.; Hübner, M.; Dreschmann, M.; Klamouris, C.; Paulsson, K.; Kueng, T.; Becker, J.; Freude, W.; Leuthold, J. (Institut für Hochfrequenztechnik und Quantenelektronik IHQ und Institut für Technik der Informationsverarbeitung ITIV, Universität Karlsruhe (TH), 76131 Karlsruhe)
Bett, A. W. (Fraunhofer-Institut Solare Energiesysteme ISE, 79110 Freiburg)

We implemented a sensor platform that uses a single optical fiber for receiving data from a remote camera unit and transmitting optically the power for operating its circuits. Communication and power channels use light of 1310 nm and 810 nm wavelengths, respectively. Ultra-compact couplers multiplex these wavelength channels into a standard 62.5 µm MMF silica fiber with a length of up to 1 km. Electrical power required to drive the remote camera electronics is generated on-site by means of a miniature photovoltaic cell with an active area of 1 mm2 and an opto-electrical conversion efficiency of 40 %.