Semiconductor optical amplification device
文献类型：专利
| 作者 | FUJIWARA MASAHIKO |
| 发表日期 | 1992-04-20 |
| 专利号 | JP1992118637A |
| 著作权人 | 日本電気株式会社 |
| 国家 | 日本 |
| 文献子类 | 发明申请 |
| 其他题名 | Semiconductor optical amplification device |
| 英文摘要 | PURPOSE:To stabilize the gain by applying a low-frequency pilot signal to an electrode which is close to an input side together with a DC bias, and extracting and controlling the pilot signal component of an optical amplifier output to a constant value. CONSTITUTION:An input light signal 19a which is sent by an optical fiber 1a is coupled with the optical amplifier 20. Further, the small-amplitude, low-frequency pilot signal from an oscillator 2a and the DC current from a DC power source 2b are added by a driving circuit 2c and applied to the electrode 15a. Part of the light output 19b is fed back to a p-side electrode 15b through an optical branch 3, a photodetector 4, an amplifier 5, a rectifying circuit 6, a low-pass filter 7, a differential amplifier 8, and an optical amplifier driving circuit 9. This feedback circuit controls the driving current outputted by the circuit 9 so that the output of the amplifier 8 becomes zero, thereby controlling the gain of the amplifier 20 to a constant value. |
| 公开日期 | 1992-04-20 |
| 申请日期 | 1990-09-07 |
| 状态 | 失效 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/50643]  |
| 专题 | 半导体激光器专利数据库 |
| 作者单位 | 日本電気株式会社 |
| 推荐引用方式 GB/T 7714 | FUJIWARA MASAHIKO. Semiconductor optical amplification device. JP1992118637A. 1992-04-20. |
入库方式： OAI收割
来源：西安光学精密机械研究所
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