Fiber optic rotation sensor utilizing unpolarized light

作者: George A. Pavlath , Herbert J. Shaw

DOI:

关键词:

摘要: Un detecteur rotatif a fibre optique, utilisant la detection du dephasage de Sagnac, comprend une simple mode (11) formant boucle (16). A fiber optic rotary detector, using of the Sagnac phase shift, comprises single forming loop Le utilise lumiere non polarisee pour produire un fonctionnement alternatif. The detector uses unpolarized light to produce an alternative operation. La produit des composantes d'onde incoherentes dont moyenne sur zero est effectuee dans le (20). Unpolarized produces incoherent wave components whose on average is calculated in Des dephasages induits maniere rotative entre coherentes se traduisent en vecteurs (54(a), 54(b)) egaux intensite et d'angles phases opposes sorte que les alternatives ces s'annulent. Induced shifts nonrotatably between coherent translate into vectors (54 (a), 54 (b)) equal intensity and opposite angles so that AC these cancel. independant facteurs l'environnement lorsque difference ondes propageant contre-courant au travers (16) multiple impair pi/2. independent environmental factors when waves propagating against current through odd pi / 2. Par consequent, dephaseur (17) polariser telle pi/2 obtenir point stable repos. Therefore, shifter for biasing such 2 as obtain operation at rest. De plus, moyens compensation (70, 78, 82) sont prevus assurer stabilite pendant rotation. In addition, means are provided ensure stability during

参考文章(6)
Ralph Alan Bergh, Herbert John Shaw, Herve C Lefevre, Fiber optic rotation sensor. ,(1982)
K. Böhm, P. Marten, K. Petermann, E. Weidel, R. Ulrich, Low-drift fibre gyro using a superluminescent diode Electronics Letters. ,vol. 17, pp. 352- 353 ,(1981) , 10.1049/EL:19810248
Shih-Chun Lin, Thomas G. Giallorenzi, Sensitivity analysis of the Sagnac-effect optical-fiber ring interferometer Applied Optics. ,vol. 18, pp. 915- 931 ,(1979) , 10.1364/AO.18.000915
W. Burns, Chin-Lin Chen, R. Moeller, Fiber-optic gyroscopes with broad-band sources Journal of Lightwave Technology. ,vol. 1, pp. 98- 105 ,(1983) , 10.1109/JLT.1983.1072090