| Laser diode transmitter with a protection device | |
| DÖMER, JOSEF, DIPL.-ING. | |
| 1988-12-28 | |
| 著作权人 | SIEMENS AKTIENGESELLSCHAFT |
| 专利号 | EP0296427A1 |
| 国家 | 欧洲专利局 |
| 文献子类 | 发明申请 |
| 其他题名 | Laser diode transmitter with a protection device |
| 英文摘要 | In order to protect against a hazard to personnel in the event of fracture of optical fibres carrying laser light, a laser safety switch is normally provided which is controlled by the opposite direction of the transmission path and, in the absence of a signal in the opposite direction, also switches the laser off in the transmission direction. In the case of directional operation there is no return channel. For this case, it is proposed that a monitoring photodiode be optically coupled to the pigtail of the laser diode, via an optical junction. The output current from the monitoring photodiode is compared with a reference current and, if the light power exceeds a predetermined limit, a controlled switch is operated and hence interrupts the supply currents for the laser diode. |
| 公开日期 | 1988-12-28 |
| 申请日期 | 1988-06-10 |
| 状态 | 失效 |
| 内容类型 | 专利 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/59571]  |
| 专题 | 半导体激光器专利数据库 |
| 作者单位 | SIEMENS AKTIENGESELLSCHAFT |
| 推荐引用方式 GB/T 7714 | DÖMER, JOSEF, DIPL.-ING.. Laser diode transmitter with a protection device. EP0296427A1. 1988-12-28. |
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