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At present fiber-optic sensors allow to measure different physical quantities with a high accuracy and a wide range. These are temperature, pressure, electric and magnetic fields, voltage and currant, acoustic and hydroacoustic fields, linear and angular displacements, radiation and others. In some cases the sensitive element of the fiber-optic sensor can not be enough small. As a result the spatial resolution is insufficient for physical quantities spatial distributions measurements . Using of the computerized tomography methods allows to cope with this problem. The fiber optic totnographie sensor (FOTS) realizes integral transformation of distribution function. With a rectilinear fiber configuration it is the Radon transform of distribution function well known in integral geometry and tomography. The measurement process consists of integral projections (unprocessed data) recording and image reconstruction. FOTS has a sensitive optical part ( for example fiber-optic interferometer), a scanning device, an interface unit and computer for system control and data processing. In comparison with X-ray, ultrasonic, optical tomographs fiberoptic tomographic sensors have no defects caused by diffraction and refraction effects. This fact makes possible to investigate extended physical fields.
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