Optical information processing device
文献类型：专利
| 作者 | ARIMOTO AKIRA; KAYANE NAOKI; OOISHI AKIO; NAKAMURA MICHIHARU; OSHIMA MASAHIRO |
| 发表日期 | 1984-07-26 |
| 专利号 | JP1984129948A |
| 著作权人 | HITACHI SEISAKUSHO KK |
| 国家 | 日本 |
| 文献子类 | 发明申请 |
| 其他题名 | Optical information processing device |
| 英文摘要 | PURPOSE:To maintain a noise of a reproducing time at a low level by photodetecting at least a part of semiconductor laser light, and positively feeding back an output of its photodetecting means to a control means of a semiconductor laser device. CONSTITUTION:A positive feedback circuit is constituted of a monitor photodetector 12, capacitors 7, 8 and a positive feedback amplifier 9. In this way, a semiconductor laser 1 is photodetected by the detector 12, only a high frequency variation portion of laser light is amplified from an output of this detector 12, and returned to a laser driving current, and by executing said operation, a high frequency oscillation is executed. As a result, the semiconductor laser 1 generates an oscillation of a vertical mode. The capacitors 7, 8 or a filter 14 fulfills a function of a filter circuit so that a component of a necessary band is not fed back positively. Accordingly, a frequency component which is much higher than a signal band is fed back positively, and a laser oscillation is converted to a multi-mode. |
| 公开日期 | 1984-07-26 |
| 申请日期 | 1983-01-14 |
| 状态 | 失效 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/59315]  |
| 专题 | 半导体激光器专利数据库 |
| 作者单位 | HITACHI SEISAKUSHO KK |
| 推荐引用方式 GB/T 7714 | ARIMOTO AKIRA,KAYANE NAOKI,OOISHI AKIO,et al. Optical information processing device. JP1984129948A. 1984-07-26. |
入库方式： OAI收割
来源：西安光学精密机械研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。