Optical filter, interleaver, and optical communication system

H - Electricity – 04 – B

Patent

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Details

H04B 10/02 (2006.01) G02B 6/28 (2006.01) G02B 6/34 (2006.01) G02B 26/02 (2006.01) G02B 27/14 (2006.01) G02B 27/28 (2006.01)

Patent

CA 2471704

A first optical system (11) has a first beam splitter (211). The first beam splitter (211) bisects light reaching from a first optical path (P1) to output one of the divided light beams to a second optical path (P2) and the other to a third optical path (P3). A second optical system (21) comprising a second beam splitter (221), a first reflection mirror (223) and a second reflection mirror (222), subjects light, output to the second optical path (P2) by the first beam splitter (221) and reaching the second optical system (21), to phase change and intensity change having a wavelength dependency for outputting in a modified condition. Accordingly, an optical filter (200) can be provided that can realize characteristics excellent in isolation by using a very simple configuration.

L'invention concerne un premier système optique (11) comprenant un premier diviseur de faisceau (211). Le premier séparateur de faisceau (211) divise un rayonnement lumineux arrivant selon un premier chemin optique (P1) pour en diriger une partie vers un deuxième chemin optique (P2) et l'autre partie vers un troisième chemin optique (P3). Un second système optique (21) comprenant un second diviseur de faisceau (221), un premier miroir réfléchissant (223) et un second miroir réfléchissant (222), soumet le rayonnement lumineux, dirigé sur le deuxième chemin optique (P2) par le premier diviseur de faisceau (221) et atteignant le second système optique (21), à changer de phase et d'intensité possédant une dépendance de la longueur d'onde aux fins de sortie dans une condition modifiée. En conséquence, la présence d'un filtre optique (200) peut permette d'obtenir de très bonnes caractéristiques d'isolation au moyen d'une configuration très simple.

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