Method for inspecting an optical fiber
文献类型：专利
| 作者 | YOSHIDA NORIYUKI; TAKAHASHI KENICHI |
| 发表日期 | 1990-01-09 |
| 专利号 | CA1264235C |
| 著作权人 | SUMITOMO ELECTRIC INDUSTRIES, LTD. |
| 国家 | 加拿大 |
| 文献子类 | 授权发明 |
| 其他题名 | Method for inspecting an optical fiber |
| 英文摘要 | ABSTRACT OF THE DISCLOSURE By the present invention, internal defects within infrared optical fibers are inspected during the course of fabrication. The optical fiber is drawn from a fiber fabrication apparatus to a winding device through an integration sphere having an inlet opening, an outlet opening, an inner diffuse reflection surface and a photodetector. The method includes impinging a light beam emitted from a strong light source obliquely at the side surface of the optical fiber. By such impingement a portion of the obliquely-impinged light beam becomes a propagating light internally within the core of the fiber. The power existing in the integration sphere is measured by means of the photodetector. The positions and extents of defects are estimated by the time and amount of change of output power of the photodetector. The output power of the photodetector is heightened to a higher level when a defect exists within the optical fiber when it is in the integration sphere. The output power is lowered to a lower level when the defect within the optical fiber when the optical fiber is between the outlet of the integration sphere and the light source. The position and extent of the defects are thus estimated by the change of the output power of the photodetector. |
| 公开日期 | 1990-01-09 |
| 申请日期 | 1985-12-16 |
| 状态 | 失效 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/34402]  |
| 专题 | 半导体激光器专利数据库 |
| 作者单位 | SUMITOMO ELECTRIC INDUSTRIES, LTD. |
| 推荐引用方式 GB/T 7714 | YOSHIDA NORIYUKI,TAKAHASHI KENICHI. Method for inspecting an optical fiber. CA1264235C. 1990-01-09. |
入库方式： OAI收割
来源：西安光学精密机械研究所
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