J. Phys. IV France 129 (2005) 189-191
Initial research of dual wavelength fibre optic perimeter sensorM. Zyczkowski, M. Kondrat and W. Ciurapinski
Military University of Technology, Institute of Optoelectronics, Kaliski St. 2, 00-908 Warsaw, Poland
The dual wavelength fibre optic perimeter sensor bases on input signals measurements in an arrangement of fibre optic Michelson and Sagnac interferometers with a 3 3 coupler and two semiconductor lasers. For 3 km long sensor we obtained 20-50m resolution of determination of disturbance point.
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