Module of laser diode
文献类型：专利
| 作者 | ONODA YOSHITO; CHIKAMA TERUMI; GOTOU MASAMI |
| 发表日期 | 1985-12-03 |
| 专利号 | JP1985244088A |
| 著作权人 | FUJITSU KK |
| 国家 | 日本 |
| 文献子类 | 发明申请 |
| 其他题名 | Module of laser diode |
| 英文摘要 | 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. |
| 公开日期 | 1985-12-03 |
| 申请日期 | 1984-05-18 |
| 状态 | 失效 |
| 源URL | [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. 1985-12-03. |
入库方式： OAI收割
来源：西安光学精密机械研究所
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