Variable wavelength optical filter
文献类型：专利
| 作者 | SAKATA HAJIME; ONO TAKEO |
| 发表日期 | 1991-02-27 |
| 专利号 | JP1991045938A |
| 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 | Variable wavelength optical filter |
| 英文摘要 | PURPOSE:To tune a selected wavelength over a wide wavelength range by coupling a distribution feedback area whose refractive index is varied with an applied voltage optically with a light gain area whose light gain is controlled with an injected current quantity. CONSTITUTION:The distribution feedback area 11 whose refractive index is controlled with the applied voltage is coupled optically with the light gain area 12 whose light gain is controlled with the injected current quantity. Therefore, the refractive index of the distribution feedback area 11 is controlled with the applied voltage and the selected wavelength is also controlled correspondingly, so that variation in the light absorption quantity in the distribution feedback area 11 is compensated by the light gain area 12 which is coupled optically. Further, when an unnecessary current preventing means is provided, no current flows to the distribution feedback area 11, no heat is generated, and the tuning of the selected wavelength is controlled with only the applied voltage. Consequently, the selected wavelength is stabilized. |
| 公开日期 | 1991-02-27 |
| 申请日期 | 1989-07-14 |
| 状态 | 失效 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/50567]  |
| 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 | SAKATA HAJIME,ONO TAKEO. Variable wavelength optical filter. JP1991045938A. 1991-02-27. |
入库方式： OAI收割
来源：西安光学精密机械研究所
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