Polarization-independent optical isolator
文献类型：专利
| 作者 | KAWAKAMI SHOJIRO; SHIRAISHI KAZUO; SHIMO MASASHI |
| 发表日期 | 2002-11-19 |
| 专利号 | CA2195086C |
| 著作权人 | SUMITOMO OSAKA CEMENT CO., LTD. |
| 国家 | 加拿大 |
| 文献子类 | 授权发明 |
| 其他题名 | Polarization-independent optical isolator |
| 英文摘要 | The present invention relates, to an optical isolator for interrupting reflection-returned light from going back in an optical system in the case of optical fiber communication, inputting and outputting of optical discs, etc. using semiconductor laser. It is an object of the present invention in connection with the polarization-independent optical isolator to make unnecessary a complicated and difficult step for optically connecting the lenses and the optical fibers so as to collimate the light emitted from the light- incident side optical fiber, enhance the efficiency in coupling the light with the light-emitting side optical fiber again and prevent the return light from being coupled with the light-incident side optical fiber again. A polarization-indepedent optical isolator according to the present invention comprises a light- incident side optical fiber having a diameter of a core expanded to give a mode field diameter at an end face being 20 to 50 µm, a light-emitting side optical fiber having a diameter of a core expanded to give a mode field diameter at an end face being 20 to 50 µm, and an optical isolator element provided. between the light- incident side optical fiber and the light-emitting side optical fiber, said optical isolator element comprising a first polarization beam splitter located at a side of the light-incident side optical fiber, a second polar- ization beam splitter located at a side of the light- emitting side optical fiber, and a Farady rotator provided between the first polarization beam splitter and the second polarization beam splitter, and at least said first polarization beam splitter being a wedge type polarization beam splitter. -35- |
| 公开日期 | 1997-02-27 |
| 申请日期 | 1996-07-10 |
| 状态 | 失效 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/36336]  |
| 专题 | 半导体激光器专利数据库 |
| 作者单位 | SUMITOMO OSAKA CEMENT CO., LTD. |
| 推荐引用方式 GB/T 7714 | KAWAKAMI SHOJIRO,SHIRAISHI KAZUO,SHIMO MASASHI. Polarization-independent optical isolator. CA2195086C. 2002-11-19. |
入库方式： OAI收割
来源：西安光学精密机械研究所
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