Compensating for chromatic dispersion in optical fibers

Details Compensating for chromatic dispersion in optical fibers Compensating for chromatic dispersion in optical fibers

G - Physics

02

B

G02B 6/42 (2006.01) G02B 6/34 (2006.01)

Patent

CA 2491739

An optical chromatic dispersion compensator (60) betters optical communication system performance. The dispersion compensator (60) includes a collimating means (61) that receives a spatially diverging beam of light from an end of an optical fiber (30). The collimating means (61) converts the spatially diverging beam into a mainly collimated beam that is emitted therefrom. An optical phaser (62) receives the mainly collimated beam from the collimating means (61) through an entrance window (63), and angularly disperses the beam in a banded pattern that is emitted from the optical phaser (61). A light- returning means (66) receives the angularly dispersed light and reflects it back through the optical phaser (62) to exit the optical phaser near the entrance window (63) thereof.

L'invention concerne un compensateur optique de dispersion chromatique (60), qui améliore la performance d'un système de communication optique. Le compensateur de dispersion (60) comprend un moyen de collimation (61), qui reçoit un faisceau de lumière spatialement divergent d'une extrémité d'une fibre optique (30). Le moyen de collimation (61) convertit le faisceau spatialement divergent en un faisceau principalement collimaté émis dudit moyen. Un dispositif optique de mise en phase (62) reçoit le faisceau principalement collimaté du moyen de collimation (61), à travers une fenêtre d'entrée (63), et disperse obliquement, dans une configuration en bandes, le faisceau émis du dispositif optique de mise en phase (62). Un moyen de réflexion de la lumière (66) reçoit la lumière dispersée obliquement et la réfléchit à travers le dispositif optique de mise en phase (62) pour quitter ce dernier à proximité de sa fenêtre d'entrée (63).

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