High reliability type optical module
文献类型：专利
| 作者 | IMOTO KATSUYUKI; MAEDA MINORU |
| 发表日期 | 1987-08-19 |
| 专利号 | JP1987189749A |
| 著作权人 | HITACHI LTD |
| 国家 | 日本 |
| 文献子类 | 发明申请 |
| 其他题名 | High reliability type optical module |
| 英文摘要 | PURPOSE:To reduce the size and the cost of a high reliability type optical module by performing the deterioration detection of a semiconductor light emitting element and automatically driving to switch to a preliminary semiconductor light emitting element, and driving the element by one drive circuit. CONSTITUTION:When a semiconductor light emitting element 1-1 is deteriorated so that an input signal to a control circuit 7 becomes smaller than a value Vs, a signal for driving cooperation switches 8-1, 8-2 is generated at the output of the control circuit 7 to switch to connect a terminal a from 9-1 to 9-2 and a terminal B from 10-1 to 10-2, and second semiconductor light emitting element 2-1 is driven by the same drive circuit 6 when the emitting light intensity is reduced due to the deterioration of the initial element 1- The light emitted from one side of the element 1-2 is propagated in a waveguide 4-2 and 4-4 and fed in a direction of an arrow 5. The light emitted from the other side of the element 1-2 is photodetected by a photodetector 2-2, converted to an electric signal, and input to the control circuit 7. |
| 公开日期 | 1987-08-19 |
| 申请日期 | 1986-02-17 |
| 状态 | 失效 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/64370]  |
| 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 | IMOTO KATSUYUKI,MAEDA MINORU. High reliability type optical module. JP1987189749A. 1987-08-19. |
入库方式： OAI收割
来源：西安光学精密机械研究所
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