G - Physics – 02 – B
Patent
G - Physics
02
B
G02B 5/18 (2006.01) G02B 6/124 (2006.01) G02B 6/34 (2006.01) G02F 1/295 (2006.01) H04J 14/02 (2006.01) G02B 6/12 (2006.01)
Patent
CA 2230580
A multiplexer/demultiplexer (10) for routing different wavelength signals between a common pathway (12) for conveying a plurality of the signals, and individual pathways (14a-14b) for separately conveying the signals, includes a reflective diffraction grating (16) with reduced polarization sensitivity for dispersing the signals. The grating (16) includes facets (20) that are oriented for reducing efficiency variations within a transmission bandwidth and that are shaped for reducing differences between the diffraction efficiencies in two orthogonal directions of polarization.
La présente invention a trait à un multiplexeur-démultiplexeur (10) permettant de distribuer des signaux de longueurs d'ondes différentes entre une voie d'accès commune (12) permettant de transmettre plusieurs signaux et des voies d'accès individuelles (14a-14b) permettant de transmettre les signaux séparément. Ledit multiplexeur-démultiplexeur (10) comprend un réseau de diffraction réfléchissant (16) à sensibilité réduite à la polarisation qui disperse les signaux. Ledit réseau (16) est muni de facettes (20) orientées de manière à réduire les écarts de rendement à l'intérieur d'une largeur de bande de transmission, et dont la forme permet de réduire les différences entre les rendements de diffraction dans deux directions orthogonales de polarisation.
Corning Incorporated
Gowling Lafleur Henderson Llp
LandOfFree
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