IC type optical semiconductor unit
文献类型：专利
| 作者 | KITAMURA MITSUHIRO |
| 发表日期 | 1991-02-26 |
| 专利号 | JP1991044989A |
| 著作权人 | NEC CORP |
| 国家 | 日本 |
| 文献子类 | 发明申请 |
| 其他题名 | IC type optical semiconductor unit |
| 英文摘要 | PURPOSE:To obtain a highly stable and reliable IC type optical semiconductor unit for broadcasting reception at low cost by integrating optical components to form a receiver, receiving a beat signal produced by a signal light and station emission, and feeding back a part of the output to a laser control region. CONSTITUTION:This semiconductor unit is designed to comprise a waveguide passage 21 on a filter side and a waveguide passage 24 on a laser side and a light receiving element 25 so that the element 25 may be electrically connected with a control region 28 of a wavelength variable laser 23 by way of a control circuit 27. Under this structure, multi-channel signal light input from the left side of an optical filter 20 is selected by the filter 20 and jointed with the light of the laser 23 at a coupler 22 and its beat signal is detected by the element 25. The output of the element 25 is partially is fed back to a region 28 of the laser 23 by way of an amplification circuits 26 and the control circuit 27. This feedback mechanism enables stable reception constantly under the stable beat signal. |
| 公开日期 | 1991-02-26 |
| 申请日期 | 1989-07-12 |
| 状态 | 失效 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/64920]  |
| 专题 | 半导体激光器专利数据库 |
| 作者单位 | NEC CORP |
| 推荐引用方式 GB/T 7714 | KITAMURA MITSUHIRO. IC type optical semiconductor unit. JP1991044989A. 1991-02-26. |
入库方式： OAI收割
来源：西安光学精密机械研究所
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