Author :
Abramski, Krzysztof M. ; Trzaska, Hubert
Author_Institution :
Inst. of Telecommun. & Acoust., Tech. Univ. Wroclaw, Poland
Abstract :
The development of the photonic sensors for electromagnetic field measurements is presented. The first applications were limited to telemetry only. An advantage of photonic sensors is the preserved spectral and phase information. An improvement in the sensors´ sensitivity is illustrated with a Mach-Zehnder interferometer and internal FM modulation of a laser with heterodyne detection. A concept of the sensor with a Fabry-Perot filter as a wideband frequency discriminator is introduced.
Keywords :
Fabry-Perot resonators; Mach-Zehnder interferometers; electro-optical modulation; electromagnetic fields; field strength measurement; frequency modulation; measurement by laser beam; optical filters; optical sensors; sensitivity; EM field measurements; EMC; FM photonic sensors; Fabry-Perot filter; Mach-Zehnder interferometer; electromagnetic field measurements; heterodyne detection; laser modulation; sensitivity; telemetry; wideband frequency discriminator; Acoustic sensors; Antenna measurements; Dipole antennas; Electrostatic measurements; Frequency; Magnetic field measurement; Optical scattering; Optical sensors; Optical transmitters; Optoelectronic and photonic sensors;
Conference_Titel :
Electromagnetic Compatibility, 2002 3rd International Symposium on
Print_ISBN :
0-7803-7277-8
DOI :
10.1109/ELMAGC.2002.1177409
