Patent ID: 8451453

Claim:
A dynamic sensor of physical quantities comprising: an optical waveguide including an amplifier medium; a pumping laser configured to provide a pumping light along an optical waveguide to optically pump the amplifier medium; at least one selective mirror linked to a first end of the optical waveguide; an interrogation laser linked to a second end of the optical waveguide configured to generate an incident wave at a predetermined first wavelength in the optical waveguide towards the at least one selective mirror; wherein the at least one selective mirror is configured to reflect a wave at the first wavelength to produce a reflective wave reflected by the at least one selective mirror toward the second end having a wavelength that equals to the first wavelength, wherein the reflective wave interferes with the incident wave between the at least one selective mirror and the second end and provoking a periodic saturation of a gain of the optical waveguide between the at least one selective mirror and the second end.