IMPROVEMENTS ON FIBER OPTIC LOOP GYROSCOPES AND MIRROR WITH DOUBLE PHASE CONJUGATION

摘要

P Gyroscope comprising a source (1) for the emission of a light beam, a loop (5) of optical fiber in which the light propagates in one direction and in the other, a mirror (9) with double phase conjugation arranged in said loop (5) so that light arrives on said mirror (5) on one side and on the other thereof, recombination means (4) for recombining the light which is propagated in the loop, detection means (2) for detecting the recombined signal, characterized in that the loop (5) comprises a single mode fiber (11) without polarization conservation and in that depolarization means (10) are arranged between said fiber (11) and the phase conjugation mirror (9), on either side thereof. /P