Optical monitoring photodiode system
文献类型：专利
| 作者 | MILLER, RICHARD C.; SCHWARTZ, BERTRAM |
| 发表日期 | 1981-09-29 |
| 专利号 | US4292512 |
| 著作权人 | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 国家 | 美国 |
| 文献子类 | 授权发明 |
| 其他题名 | Optical monitoring photodiode system |
| 英文摘要 | The tracking problems of prior art optical monitoring (e.g., feedback stabilization) schemes are substantially alleviated by positioning a photodiode (PD 130) directly in the light path of the optical source (100) to be stabilized. The active (light-absorbing) layer (104) of the PD samples (absorbs) only a small portion of the light beam (140) emanating from the source and converts that portion to a photocurrent used in a feedback loop (120, 101) to control the excitation supplied to the source. The remaining, major portion (140') of the beam is transmitted unabsorbed through the PD active layer to utilization means (e.g., through an optical fiber 108 to a remote receiver). Advantageously, in one embodiment the PD is a double heterostructure (DH) in which the photocurrent is linearly related to the beam intensity. The use of discrete or integrated lens means (110, 110', 164, 166) to enhance coupling from the source to PD is described. In addition, tandem DH-PDs (150, 152) are also described which perform both detection, for demodulating encoded information at one optical frequency, and sampling, for feedback stabilization at another optical frequency. |
| 公开日期 | 1981-09-29 |
| 申请日期 | 1978-06-19 |
| 状态 | 失效 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/34701]  |
| 专题 | 半导体激光器专利数据库 |
| 作者单位 | BELL TELEPHONE LABORATORIES, INCORPORATED |
| 推荐引用方式 GB/T 7714 | MILLER, RICHARD C.,SCHWARTZ, BERTRAM. Optical monitoring photodiode system. US4292512. 1981-09-29. |
入库方式： OAI收割
来源：西安光学精密机械研究所
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