Improvements to the optical fiber gyroscopes a loop and a mirror has a double phase conjugate

摘要

Gyroscope comprising a source (1) for the emission of a light beam, a loop (5) of the optical fiber in which the light is propagated in a direction and in the other, a mirror (9) with a double phase conjugate located in the loop (5) so that the beam impinges on the said mirror (5) of one and the other side of that - ci, recombination means (4) for recombining the light is propagated in the loop, the detection means (2) in order to detect the recombined signal, characterized in that the loop (5) comprises a monomode fiber (11) without the conservation of polarization, and in that the depolarization means (10) are disposed between said fiber (11) and the phase conjugation mirror (9), on either side of that -.