Wavelength-selective switch

G - Physics – 02 – B

Patent

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Details

G02B 26/08 (2006.01) G02B 5/18 (2006.01)

Patent

CA 2690084

An object of the present invention is to provide a wavelength-selective switch in which a position of an optical component hardly shifts when fixing the optical component. In order to achieve the object, the wavelength-selective switch according to the present invention is the wavelength-selective switch provided with a switch unit having a lens array, a first lens and a beam expander, and a branching unit having a second lens, a diffraction grating, a third lens and a mirror, in which the switch unit and the branching unit are accommodated in independent casings, and a confocal point of the light transmitted through the first lens and the light transmitted through the second lens are arranged on a connecting surface of the casing of the switch unit and the casing of the branching unit.

La présente invention concerne un commutateur de sélection de longueur d'onde qui empêche que la position d'un composant optique ne se décale facilement une fois fixée. Le commutateur de sélection de longueur d'onde comprend une section commutateur comportant un réseau de lentilles, une première lentille et un dilatateur de faisceau, et une section démultiplexage comportant une deuxième lentille, un réseau de diffraction, une troisième lentille et un miroir. Dans ce système, la section commutateur et la section démultiplexage sont contenues, respectivement, dans des logements indépendants et une confocale de la lumière traversant la première lentille et de la lumière traversant la deuxième lentille est agencée sur le plan de connexion du logement de la section commutateur et du logement de la section démultiplexage.

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