Xi'an Institute of Optics and Precision Mechanics,CAS
| Module of laser diode | |
| 其他题名 | Module of laser diode |
| ONODA YOSHITO; CHIKAMA TERUMI; GOTOU MASAMI | |
| 1985-12-03 | |
| 专利权人 | FUJITSU KK |
| 公开日期 | 1985-12-03 |
| 授权国家 | 日本 |
| 专利类型 | 发明申请 |
| 摘要 | PURPOSE:To miniaturize a laser diode module and reduce cost thereof by arranging the optical axis of a duble refracting lens so as to run parallel with the end surface of a laser diode and be made perpendicular to a junction surface and disposing an optical fiber at the position of image formation of ordinary rays of the double refracting lens. CONSTITUTION:The optical axis 4 of a double refracting lens 2 is arranged so as to run parallel with the end surface 1a of a laser diode and be made perpendicular to a junction surface 1b in the laser diode through a coupling system using one lens. An optical fiber 3 is disposed at the position of image formation of ordinary rays 7. When laser beams from the laser diode 1 are projected to the double refracting lens 2, the positions of image formation of ordinary rays 7 and extraordinary rays 8 change, and extraordinary rays 8 are difficult to be coupled with the optical fiber 3 in comparison with ordinary rays 7, thus improving an excinction ratio. When a constant-polarization fiber is used as the optical fiber, the extinction ratio after a projection from the fiber is further enhanced because the propagation of extraordinary rays can be prevented. Since a polarizer is not employed, a module can be miniaturized and cost thereof is reduced. |
| 其他摘要 | 目的：通过将双折射透镜的光轴布置成与激光二极管的端面平行并垂直于结表面并在光纤上设置光纤，使微型激光二极管模块小型化并降低成本。双折射透镜的普通光线图像形成的位置。组成：双折射镜头2的光轴4设置成与激光二极管的端面1a平行，并通过使用一个镜头的耦合系统垂直于激光二极管的连接面1b。光纤3配置在普通光线7的图像形成位置。当来自激光二极管1的激光束投射到双折射透镜2时，普通光线7和非常光线8的图像形成位置发生变化，与普通光线7相比，非常光线8难以与光纤3耦合，因此提高了消光比。当使用恒定偏振光纤作为光纤时，由于可以防止非常光线的传播，因此从光纤投射后的消光比进一步增强。由于不采用偏振器，因此可以使模块小型化并降低其成本。 |
| 主权项 | - |
| 申请日期 | 1984-05-18 |
| 专利号 | JP1985244088A |
| 专利状态 | 失效 |
| 申请号 | JP1984099957 |
| 公开（公告）号 | JP1985244088A |
| IPC 分类号 | G02B6/42 | H01S5/00 | H01S5/022 | H01S3/18 |
| 专利代理人 | - |
| 代理机构 | - |
| 文献类型 | 专利 |
| 条目标识符 | http://ir.opt.ac.cn/handle/181661/62923 |
| 专题 | 半导体激光器专利数据库 |
| 作者单位 | FUJITSU KK |
| 推荐引用方式 GB/T 7714 | ONODA YOSHITO,CHIKAMA TERUMI,GOTOU MASAMI. Module of laser diode. JP1985244088A[P]. 1985-12-03. |
| 条目包含的文件 | ||||||
| 文件名称/大小 | 文献类型 | 版本类型 | 开放类型 | 使用许可 | ||
| JP1985244088A.PDF（152KB） | 专利 | 开放获取 | CC BY-NC-SA | 请求全文 | ||
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