Laser diode driving circuit
文献类型：专利
| 作者 | BAUMGARTNER, STEVEN JOHN; HEDIN, DANIEL SCOTT; SILJENBERG, DAVID WARREN |
| 发表日期 | 2002-05-21 |
| 专利号 | US6392215 |
| 著作权人 | INTERNATIONAL BUSINESS MACHINES CORPORATION |
| 国家 | 美国 |
| 文献子类 | 授权发明 |
| 其他题名 | Laser diode driving circuit |
| 英文摘要 | An improved laser diode driving circuit is disclosed which includes a current source, an operational amplifier, a light sensing device, a current mirror, and a constant current source. The current source is coupled to the laser diode for biasing the laser diode. The operational amplifier has an output coupled to the current source for driving the current source. The operational amplifier includes a first and a second input. The first input is coupled to a reference voltage. The second input receives a feedback signal. The light sensing device is coupled to a first supply voltage for detecting a portion of an optical power output from the laser. The light sensing device generates a monitor current proportional to the detected optical power output. The current mirror is coupled to the light sensing device and the second input of the operational amplifier. The current mirror receives the monitor current and generates a mirror current which is substantially equal to the monitor current. The constant current source is coupled to the second input of the operational amplifier for outputting a reference current. The reference current and the mirror current are then utilized to generate the feedback signal. |
| 公开日期 | 2002-05-21 |
| 申请日期 | 1999-09-20 |
| 状态 | 失效 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/71560]  |
| 专题 | 半导体激光器专利数据库 |
| 作者单位 | INTERNATIONAL BUSINESS MACHINES CORPORATION |
| 推荐引用方式 GB/T 7714 | BAUMGARTNER, STEVEN JOHN,HEDIN, DANIEL SCOTT,SILJENBERG, DAVID WARREN. Laser diode driving circuit. US6392215. 2002-05-21. |
入库方式： OAI收割
来源：西安光学精密机械研究所
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