Wavelength variable filter
文献类型：专利
| 作者 | ONO TAKEO; SAKATA HAJIME |
| 专利号 | JP1991267924A |
| 著作权人 | キヤノン株式会社 |
| 国家 | 日本 |
| 文献子类 | 发明申请 |
| 其他题名 | Wavelength variable filter |
| 英文摘要 | PURPOSE:To allow the increase in the change width of selective wavelengths by utilization of QCSE and the free change of the selective wavelength region and to facilitate designing by providing plural kinds of wells having different base energy levels in the multiple quantum well structure of a waveguide layer. CONSTITUTION:The waveguide layer consists of the multiple quantum well structure and a grating 6 is formed on this multiple quantum well structure. This waveguide layer is provided with at least two electrodes which are sandwiched by semiconductors of a p type and n type into a pin structure and are so formed as to be reverse biased. Further, this layer has plural kinds of the wells having the base energy levels varying in the multiple quantum well structure. For example, at least one well of the multiple quantum well structure layer 4 is deepened to lower the base level energy so as to generate the recombination of carriers mainly with this well at the time of current implantation. The waveguide region where a gain is sufficiently obtd. is made longer in this way and is mated with the wavelength region where the change in the refractive index by the Stark effect (QCSE) to confine the quantum in the other well of the circumference is made larger. |
| 公开日期 | 1991-11-28 |
| 申请日期 | 1990-03-19 |
| 状态 | 失效 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/43972]  |
| 专题 | 半导体激光器专利数据库 |
| 作者单位 | キヤノン株式会社 |
| 推荐引用方式 GB/T 7714 | ONO TAKEO,SAKATA HAJIME. Wavelength variable filter. JP1991267924A. |
入库方式： OAI收割
来源：西安光学精密机械研究所
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