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 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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