G - Physics
02
F
G02F 1/09 (2006.01) G02B 5/30 (2006.01) G02B 6/26 (2006.01)
Patent
CA 2341258
An optical isolator (10) having a constitution in which a Faraday rotator (3) is sandwiched by two polarizers (1, 2), which can be more easily produced at a reduced cost. An optical isolator is constituted so that it comprises the following constituent elements in the described order: a first reflection-type polarizer (1) made of a polymeric multilayer film; a Faraday rotator (3) capable of rotating the polarizing plane by 45 degrees; a tapered glass plate (4); and a second reflection-type polarizer (2) made of a polymeric multi- layer film.
L'invention concerne un isolateur (10) optique, constitué d'un rotateur (3) de Faraday pris entre deux polariseurs (1, 2), qu'il est plus facile de produire à coût réduit. L'isolateur optique de l'invention est constitué de manière à comprendre, dans l'ordre dans lequel ils apparaissent, les éléments constituants ci-après: un premier polariseur du type à réflexion (1) constitué d'un film polymère multicouche; un rotateur de Faraday (3) pouvant faire tourner le plan de polarisation de 45 degrés; une plaque de verre conique (4); et un second polariseur du type à réflexion (2) constitué d'un film polymère multicouche.
Kimura Masayuki
Masumoto Toshiaki
Takahashi Tatsuo
Minnesota Mining And Manufacturing Company
Smart & Biggar
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