Optical transmission device and method for driving laser diode
文献类型：专利
| 作者 | HANEDA, MAKOTO; HANAWA, HIROAKI |
| 发表日期 | 2001-02-27 |
| 专利号 | US6195370 |
| 著作权人 | HITACHI, LTD. |
| 国家 | 美国 |
| 文献子类 | 授权发明 |
| 其他题名 | Optical transmission device and method for driving laser diode |
| 英文摘要 | An optical transmission device obtains driving control data corresponding to a temperature detected by a temperature detection circuit (112) from memory means (173), controls a driving current to be supplied to a laser diode (100) based on the driving control data, and measures a driving current to be actually supplied to the laser diode whose emission power is held constant by an automatic optical output control circuit (115, 113). Further, when the difference between the measured driving current and a driving current determined by the driving control data corresponding to the detected temperature at that time exceeds an allowable range, the optical transmission device updates the driving control data. Upon determination of the deterioration of the laser diode, the progress of the deterioration of the laser diode is determined based on the difference between a driving current defined by driving control data corresponding to a newly measured temperature and an actual driving current formed by automatic optical output control. Therefore, a distinction between whether an increase in driving current due to the automatic optical output control results from the deterioration of the laser diode and whether it results from a variation in ambient temperature is reliably made. |
| 公开日期 | 2001-02-27 |
| 申请日期 | 1997-09-16 |
| 状态 | 失效 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/34571]  |
| 专题 | 半导体激光器专利数据库 |
| 作者单位 | HITACHI, LTD. |
| 推荐引用方式 GB/T 7714 | HANEDA, MAKOTO,HANAWA, HIROAKI. Optical transmission device and method for driving laser diode. US6195370. 2001-02-27. |
入库方式： OAI收割
来源：西安光学精密机械研究所
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