| 发明名称 |
OPTICAL BRANCHING DEVICE |
| 摘要 |
PURPOSE:To make it possible to suitably control the optically branching ratio by providing at the branched portion of an optical fiber a beam splitter which is composed of such a dielectric multi-layer film has has its transmissivity and reflectivity varied in accordance with the level of the voltage applied. |
| 申请公布号 |
JPS5440645(A) |
申请公布日期 |
1979.03.30 |
| 申请号 |
JP19770106340 |
申请日期 |
1977.09.06 |
| 申请人 |
HITACHI LTD |
发明人 |
FUJITA HIROYUKI;MIYAKE KIYOHIDE;YAMAGUCHI KOUJI;SUZAKI YASUJI |
| 分类号 |
H04B10/29;G02B5/00;G02B6/28;G02B26/08;G02B27/10;H04B10/00;H04B10/27 |
主分类号 |
H04B10/29 |
| 代理机构 |
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代理人 |
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