| 发明名称 |
ADJUSTING METHOD FOR COUPLING LENGTH IN DIRECTIONAL OPTICAL COUPLER |
| 摘要 |
PURPOSE:To adjust an useful coupling length of two line-like light guiding paths provided in proximity by mounting onto the side of one path a thin film of a material having a refractive index higher than those of said paths. |
| 申请公布号 |
JPS5253437(A) |
申请公布日期 |
1977.04.30 |
| 申请号 |
JP19750129086 |
申请日期 |
1975.10.27 |
| 申请人 |
NIPPON TELEGRAPH & TELEPHONE |
发明人 |
MIKAMI OSAMU;NODA JIYUICHI |
| 分类号 |
G02B6/122;H01P5/18 |
主分类号 |
G02B6/122 |
| 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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