Optical filter element
文献类型：专利
| 作者 | NUMAI TAKAAKI |
| 发表日期 | 1988-10-20 |
| 专利号 | JP1988253335A |
| 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 | Optical filter element |
| 英文摘要 | PURPOSE:To obtain an optical filter element having tens of channels or more that can provide the variable tuning width of a large selective wavelength by optically connecting a distribution feedback area with a phase, shift structure and an active area serially, and making to the both end surfaces of the element into non-reflection structure and controlling a phase shifting amount. CONSTITUTION:The distribution feedback area with the phase shift structure is composed of a DBR area 200 and a phase control area 210. The phase shifting amount can be adjusted by pouring a current to the phase shifting area from the outside. Firstly, a lambda/4 shift diffraction grating is formed in the DBR area 200 of an n-InP substrate 110. Secondly, a 1st LPE growth leads a non-dope InGaAsP light guide layer 120, an n-InP buffer layer 130, a non-dope active layer 140 and a p-InP clad layer 150 to grow in that order. Thirdly, the InP clad layer 150 and the active layer 140 apart from the active area 100 are selectively removed, and during the 2nd LPE growth a p-InP clad layer 160 is fully formed. After that, an SiN film 170 is formed in order to keep the reflectance of the both ends of the element below 1%. Thus any wavelength can be selected. |
| 公开日期 | 1988-10-20 |
| 申请日期 | 1987-04-09 |
| 状态 | 失效 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/78147]  |
| 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 | NUMAI TAKAAKI. Optical filter element. JP1988253335A. 1988-10-20. |
入库方式： OAI收割
来源：西安光学精密机械研究所
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