レ-ザ光直接周波数変調方法
文献类型：专利
| 作者 | 江村 克己; 山口 昌幸; 峰村 孝一 |
| 发表日期 | 1994-04-06 |
| 专利号 | JP1994026276B2 |
| 著作权人 | NIPPON ELECTRIC CO |
| 国家 | 日本 |
| 文献子类 | 授权发明 |
| 其他题名 | レ-ザ光直接周波数変調方法 |
| 英文摘要 | PURPOSE:To change currents injected into a modulating region, and to modulate frequency efficiently by using a semiconductor laser element with a laser region, in which a diffraction grating is formed along an active layer, and an optical guide layer optically coupled with the active layer as a light source. CONSTITUTION:A laser region 22 is biassed at a fixed value larger than an oscillating threshold, and a signal from a signal generator 13 is transmitted over a modulating region 23 through a modulating circuit 12, thus modulating frequency. The efficiency of frequency modulation in the modulating region 23 is improved, and there is no dependency of modulation frequency in modulation characteristics. A NRZ random signal of 100Mb/s is generated in the signal generator 13, and transmitted over the modulating region 23 through the modulating circuit 12, thus conducting binary FM modulation. Optical frequency is discriminated and detected directly by passing output beams to be modulated 24 from an integrated type semiconductor laser element 21 through a Fabry-Perot-etalon at that time, and an output waveform is observed. A modulation waveform is regenerated approximately accurately in the waveform acquired, and there is no waveform strain due to frequency modulation in the modulating region 23. Accordingly, laser-light direct frequency modulation in which there is no waveform deterioration in modulation lights can be conducted. |
| 公开日期 | 1994-04-06 |
| 申请日期 | 1985-01-14 |
| 状态 | 失效 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/34769]  |
| 专题 | 半导体激光器专利数据库 |
| 作者单位 | NIPPON ELECTRIC CO |
| 推荐引用方式 GB/T 7714 | 江村 克己,山口 昌幸,峰村 孝一. レ-ザ光直接周波数変調方法. JP1994026276B2. 1994-04-06. |
入库方式： OAI收割
来源：西安光学精密机械研究所
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