Semiconductor laser driving method
文献类型：专利
| 作者 | HOSHI HIROAKI |
| 发表日期 | 1991-01-25 |
| 专利号 | JP1991017839A |
| 著作权人 | CANON INC |
| 国家 | 日本 |
| 文献子类 | 发明申请 |
| 其他题名 | Semiconductor laser driving method |
| 英文摘要 | PURPOSE:To obtain plural optical output levels and to realize a low noise corresponding to the levels by controlling the amplitude of a high frequency current to be injected to a semiconductor laser independently from a bias current, and modulating amplitude or bias so as to obtain desired optical output by considering the current-output characteristic of the laser. CONSTITUTION:The output of a photodiode 2 for monitoring is monitored by arranging at the rear side of the semiconductor laser 1 that is a light source, and a modulation signal level-modulated corresponding to information from an input terminal 3 is inputted to a processing circuit 4. At such a case, an output signal from the circuit 4 is outputted to an amplifier 5, a high frequency voltage source 9, and a comparator 8, and the output of the amplifier 5 is applied on the laser 1 via an inductance circuit not shown in figure, and also, the output of the voltage source 9 is applied on the laser 1 via a coupling capacitor not shown in figure, and the output current of the diode 2 is supplied to the comparator 8 via a current-voltage converter 7 after its high frequency component being cut off with a low-pass filter 6, then, is compared with a signal from the circuit 4. Thus, automatic power control can be performed. |
| 公开日期 | 1991-01-25 |
| 申请日期 | 1989-06-15 |
| 状态 | 失效 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/59635]  |
| 专题 | 半导体激光器专利数据库 |
| 作者单位 | CANON INC |
| 推荐引用方式 GB/T 7714 | HOSHI HIROAKI. Semiconductor laser driving method. JP1991017839A. 1991-01-25. |
入库方式： OAI收割
来源：西安光学精密机械研究所
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