| 摘要 |
<p>The invention relates to a device for measuring the mechanical deformations of a section that are corrected for variations in the local temperature and for measuring these variations in the local temperature near said measurement device, together with an associated method, the device comprising at least one fibre-optic sensor having two Bragg gratings (2, 3), the sensor being subjected to the mechanical deformations of the section and being sensitive to the variations in local temperature, the first Bragg grating (2) being parallel to the longitudinal axis of the section, characterized in that the second Bragg grating (3) is in a cross configuration with respect to the first Bragg grating (2) and in that the optical fibre portions on which the two Bragg gratings (2, 3) are inscribed are superposed at a distance apart that is as short as possible, without there being any mechanical interference between said optical fibre portions or, in the limit, a stress-free contact.</p> |
