Distributed feedback laser
文献类型：专利
| 作者 | KAMITE KIYOTSUGU |
| 发表日期 | 1989-07-31 |
| 专利号 | JP1989189979A |
| 著作权人 | FUJITSU LTD |
| 国家 | 日本 |
| 文献子类 | 发明申请 |
| 其他题名 | Distributed feedback laser |
| 英文摘要 | PURPOSE:To inhibit oscillations in a Fabry-Perot mode and a TM mode at the time of direct modulation with a relaxation oscillation by a method wherein the reflectivity on a first end face of a laser is made smaller than the resistivities on a second end face of the laser and is set within a prescribed range. CONSTITUTION:An n-type InP substrate 11, a p-type InP layer 12, an n-type InP layer 13, a p-type InGaAsP layer 14, an InGaAsP waveguide layer 15, an InGaAsP active layer 16 and a diffraction grating 17 formed in the substrate 11 are provided. The end face 22 of end faces 21 and 22 of a DFB(Distributed Feed Back) laser is a cleavage plane and a low reflectivity film 23 having a 0.1-4% reflectivity on the side of the end face 21 is formed on the other end face 2 Thereby, an oscillation in a Fabry-Perot mode and a TM mode at the time of direct modulation with a relaxation oscillation can be inhibited and at the same time, it can be prevented that an error floor is generated in the transmission characteristics of the laser. |
| 公开日期 | 1989-07-31 |
| 申请日期 | 1988-01-26 |
| 状态 | 失效 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/84809]  |
| 专题 | 半导体激光器专利数据库 |
| 作者单位 | FUJITSU LTD |
| 推荐引用方式 GB/T 7714 | KAMITE KIYOTSUGU. Distributed feedback laser. JP1989189979A. 1989-07-31. |
入库方式： OAI收割
来源：西安光学精密机械研究所
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