Procedure for measuring the wavelength of light reflected by one or more networks Bragg diffraction in the core of an optical fiber and its application to the measurement of deformation and / or temperature.

摘要

Procedure for measuring the wavelength of light reflected by one or more networks Bragg diffraction in the core of an optical fiber and its application to measure strain and / or temperature, consisting of a light source not monochromatic ( 10), an optical coupler (12), a filter (1) dependent on the wavelength, and a photodetector (2) and may be dependent filtering wavelength a Bragg grating long period (20 '' ) or Fabry-Perot tunable (1 '') filter, passing the reflected wavelength through the filter, so that the intensity received by the photodetector (2) depends on the wavelength, and thus can determine this function of intensity. **FIGURE**