发明名称 Optical coupling apparatus for coupling light into a waveguide.
摘要 <p>A photocoupler having a polarization converting device (3L) for converting a laser light emitted from a laser source (1) to a polarized light (6B) having an electric vector oriented in a direction of a tangent of a circle having its center on an optical axis of the photocoupler and the phase of which is shifted by pi at the boundary of a disclination line passing the center of the circle and the wave front of the converted laser light (6B) is spherical and a coupler (5) for exciting a waveguided light (7) which propagates from the center (0) thereof radially wherein said coupler (5) is positioned so that the input coupling efficiency becomes maximum. <IMAGE></p>
申请公布号 EP0449193(A1) 申请公布日期 1991.10.02
申请号 EP19910104743 申请日期 1991.03.26
申请人 MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. 发明人 NISHIWAKI, SEIJI;UCHIDA, SINJI;ASADA, JUNICHI
分类号 G02B6/34;G02B6/42;G11B7/12 主分类号 G02B6/34
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