Monitoring and/or control of optical amplifiers
文献类型：专利
| 作者 | HALEMANE, THIRUMALA R.; JOHNSON, BARTLEY C.; JOPSON, ROBERT M. |
| 发表日期 | 1990-04-17 |
| 专利号 | US4918396 |
| 著作权人 | BELL TELEPHONE LABORATORIES, INCORPORATED, 600 MOUNTAIN AVENUE, MURRAY HILL, NEW JERSEY 07974-2070, A CORP. OF NEW YORK |
| 国家 | 美国 |
| 文献子类 | 授权发明 |
| 其他题名 | Monitoring and/or control of optical amplifiers |
| 英文摘要 | Briefly, in this invention, the output optical power of an optical amplifier is determined by detecting and measuring the electrical signal induced on the bias lead of the optical amplifier when an optical data stream with additional amplitude modulation passes through the optical amplifier. This additional amplitude modulation can consist of a base band signal, a pilot tone and/or a sub-carrier which is amplitude modulated, frequency modulated or phase modulated. The modulation depth and bandwidth of the additional amplitude modulation should be kept small enough that the data stream is not excessively affected. The induced electrical signal provides a measurement of the optical power at the output facet of the optical amplifier. Control of the output power of the optical amplifier is effected by controlling the bias current applied to the bias lead of the optical amplifier. Thus, the output power of an optical amplifier can be monitored and telemetry signals can be received without interception of the data stream. The additional amplitude modulation of the data stream can be effected at the transmitter or by modulation of the bias current of an optical amplifier for transmission downstream. With this invention, no optical power is lost when the output power generated by an optical amplifier is monitored and modulation of the data stream can be effected without the use of additional optical components. |
| 公开日期 | 1990-04-17 |
| 申请日期 | 1989-04-05 |
| 状态 | 失效 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/34553]  |
| 专题 | 半导体激光器专利数据库 |
| 作者单位 | BELL TELEPHONE LABORATORIES, INCORPORATED, 600 MOUNTAIN AVENUE, MURRAY HILL, NEW JERSEY 07974-2070, A CORP. OF NEW YORK |
| 推荐引用方式 GB/T 7714 | HALEMANE, THIRUMALA R.,JOHNSON, BARTLEY C.,JOPSON, ROBERT M.. Monitoring and/or control of optical amplifiers. US4918396. 1990-04-17. |
入库方式： OAI收割
来源：西安光学精密机械研究所
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