Structured optical fibre sensor integrating a tunable vernier effect laser emission device
AssigneeCommissariat A L'energie Atomique Et Aux Energies Alternatives
InventorsKarim Hassan, Quentin Wilmart
Life of this patent
Estimating the term…
Abstract
The invention is concerned with a structured optical fibre sensor, comprising a light source (1), a detection system (2) and a Bragg grating optical fibre (3) connected to said source and said system. The light source is a wavelength-tunable laser emission device (1) comprising a cavity (CA) delimited by a first and a second Sagnac mirror (M1, M2). The cavity comprises an amplifying medium (AM) and a tunable spectral filter using the Vernier effect (F), said filter (F) comprising at least three resonant rings (R1, R2, RN−1, RN) arranged in cascade, each resonant ring integrating a wavelength-tunable reflectivity loop mirror (MBR).
Claims7
A structured optical fibre sensor, comprising a light source, a detection system and a Bragg grating optical fibre connected to said source and said detection system, wherein the light source is a wavelength tunable laser emission device which comprises:
- a first and a second Sagnac mirror;
- a cavity delimited by the first and second Sagnac mirror, the cavity comprising an amplifying medium and a tunable spectral filter using the Vernier effect, said filter comprising at least three resonant rings arranged in cascade, each resonant ring incorporating a wavelength-tunable reflectivity loop mirror.
Dependencies are inferred from the claim text.