Title :
Optically powered remote optical field sensor system using an electroabsorption-modulator
Author :
Heinzelmann, R. ; Stohr, A. ; Groz, M. ; Kalinowski, D. ; Alder, T. ; Schmidt, M. ; Idger, D.
Author_Institution :
Gerhard-Mercator-Univ., Duisburg, Germany
Abstract :
A novel optical sensor system is presented, where the remote transceiver unit is based upon a high-speed electroabsorption (EA) waveguide modulator. The proposed sensor concept allows bi-directional operation, by using the EA-modulator not only as a modulator element to receive signals from the antenna but also as a detector element to transmit signals to the antenna. For optimum dynamic range and highest sensitivity the EA-modulator is biased. The voltage necessary for this is provided from an integrated fiber-coupled photovoltaic cell (PVC) array in order not to reduce the overall EMC of the sensor.
Keywords :
electro-optical modulation; electroabsorption; field strength measurement; microwave measurement; optical sensors; optical waveguide components; remote sensing by laser beam; transceivers; EMC; bi-directional operation; high-speed electroabsorption waveguide modulator; integrated fiber-coupled photovoltaic cell array; optically powered remote optical field sensor; transceiver unit; Bidirectional control; High speed optical techniques; Optical modulation; Optical sensors; Optical waveguides; Receiving antennas; Sensor arrays; Sensor systems; Transceivers; Transmitting antennas;
Conference_Titel :
Microwave Symposium Digest, 1998 IEEE MTT-S International
Conference_Location :
Baltimore, MD, USA
Print_ISBN :
0-7803-4471-5
DOI :
10.1109/MWSYM.1998.700595
