Optical fiber polarization scrambler and operating parameter...

G - Physics – 02 – F

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G02F 1/01 (2006.01) G02B 6/10 (2006.01) G02B 6/34 (2006.01)

Patent

CA 2287377

An optical fiber polarization scrambler decreasing the degree of polarization (DOP) of light efficiently using at least two optical fiber birefringence modulators (10, 11) and an operating parameter input method for the same. Birefringence modulators are constructed with hollow cylindrical piezo devices (10, 11) and a strand of optical fiber (30) wound continuously on the outer walls of the piezo devices (10, 11). An angle between the birefringence modulators consisting of the optical fiber polarization scrambler is configured to compensate the effect of circular birefringence. A method for exactly configuring birefringence modulation frequency and birefringence modulation amplitude to achieve effective polarization scrambling for the optical fiber polarization scrambler is also provided.

Brouilleur de polarisation à fibre optique qui réduit efficacement le degré de polarisation de la lumière à l'aide d'au moins deux modulateurs (10, 11) de biréfringence à fibre optique, et procédé d'entrée de paramètres de fonctionnement pour ledit brouilleur. Les modulateurs de biréfringence sont constitués de dispositifs piézo-électriques cylindriques creux (10, 11) et d'une fibre optique (30) enroulée en continu sur les parois externes des dispositifs piézo-électriques (10, 11). Un angle entre les modulateurs de biréfringence constituant le brouilleur de polarisation à fibre optique est configuré pour compenser l'effet de la biréfringence circulaire. Un procédé destiné à configurer exactement la fréquence de modulation de biréfringence et l'amplitude de modulation de biréfringence de manière à obtenir un brouillage efficace de la polarisation pour le brouilleur de polarisation à fibre optique est également décrit.

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