Photo coupler
文献类型：专利
| 作者 | UEMATSU YUTAKA; UNNO YOUICHI; KOSEKI TAKESHI |
| 发表日期 | 1979-04-23 |
| 专利号 | JP1979051391A |
| 著作权人 | TOKYO SHIBAURA ELECTRIC CO |
| 国家 | 日本 |
| 文献子类 | 发明申请 |
| 其他题名 | Photo coupler |
| 英文摘要 | PURPOSE:To increase coupling efficiency by so constituting the coupler that the angle of inclination of the taper part of the optical fiber having the taper part is above 0.3 deg. and below 2 deg.. CONSTITUTION:A fiber having a taper part of high equivalent numerical aperture, e.g., NA=0.26, for example, an optical fiber comprising tapering the end 6 of an optical fiber 5 is disposed on the light emitting element 4 side, and an optical fiber 7 for signal transmission of lower NA than the numerical aperture NA of said optical fiber, e.g., Na=0.18 is coupled in the position of a certain length l Coupling of the light emitting element 4 and the fiber 5 is determined by a taper ratio R. Here, the angle of inclination of the taper above 0.3 deg. is enough and below 1 deg. is optimum but may be 2 deg. or under. |
| 公开日期 | 1979-04-23 |
| 申请日期 | 1977-09-30 |
| 状态 | 失效 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/62764]  |
| 专题 | 半导体激光器专利数据库 |
| 作者单位 | TOKYO SHIBAURA ELECTRIC CO |
| 推荐引用方式 GB/T 7714 | UEMATSU YUTAKA,UNNO YOUICHI,KOSEKI TAKESHI. Photo coupler. JP1979051391A. 1979-04-23. |
入库方式： OAI收割
来源：西安光学精密机械研究所
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