Semiconductor laser driving equipment
文献类型：专利
| 作者 | HOSHI HIROAKI; YAMADA ETSUO |
| 发表日期 | 1990-08-13 |
| 专利号 | JP1990203580A |
| 著作权人 | キヤノン株式会社 |
| 国家 | 日本 |
| 文献子类 | 发明申请 |
| 其他题名 | Semiconductor laser driving equipment |
| 英文摘要 | PURPOSE:To realize highly stable and reliable laser driving with low cost by installing a means to apply positive feedback to semiconductor laser output light, thereby stabilizing the output at a specified value, and reducing noise. CONSTITUTION:From a terminal 3, a signal being modulated according to the information is inputted into a processing circuit 4. At the time of regeneration, a DC signal voltage from the processing circuit 4 is applied to a comparator 9, a laser driving amplifier 5 and a comparator 14 for high frequency oscillation positive feedback use, and the optical output of a laser 1 is turned into a regenerated optical power. A voltage corresponding with the output of a voltage- current converter 6 when the value of laser output is normal, and a reference voltage from the processing circuit 4 are inputted into a comparator 9 and compared with each other. An error signal is delivered to an amplifier 5 so as to cancel the low frequency fluctuation of the laser output. At this time, positive feedback in the frequency domain is applied to the laser 1, and oscillation is enabled in high frequency region. Thereby, a desired output value is stably obtained based on the reference signal, noise is reduced, and high reliable laser driving is enabled with low cost. |
| 公开日期 | 1990-08-13 |
| 申请日期 | 1989-02-02 |
| 状态 | 失效 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/59615]  |
| 专题 | 半导体激光器专利数据库 |
| 作者单位 | キヤノン株式会社 |
| 推荐引用方式 GB/T 7714 | HOSHI HIROAKI,YAMADA ETSUO. Semiconductor laser driving equipment. JP1990203580A. 1990-08-13. |
入库方式： OAI收割
来源：西安光学精密机械研究所
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