Xi'an Institute of Optics and Precision Mechanics,CAS
| Tuneable optical filter | |
| 其他题名 | Tuneable optical filter |
| JEAN-PIERRE WEBER | |
| 1994-02-16 | |
| 专利权人 | TELEFONAKTIEBOLAGET LM ERICSSON |
| 公开日期 | 1994-02-16 |
| 授权国家 | 英国 |
| 专利类型 | 发明申请 |
| 摘要 | A tuneable optical filter for a wavelength multiplexing system comprises a substrate in which is formed a waveguide 22 and a plurality of tuneable reflection gratings on top of the waveguide. The grating normally block all channels in the incoming lightwave. The gratings are tuned so that their reflection bands do not coincide with the desired channel or channels thereby allowing the desired channel or channels to pass through the filter. The substrate may be a semiconductor and electrodes 24, 26, 28, 30 are provided to tune each grating. Alternatively the gratings are tuned using a heating element. |
| 其他摘要 | 用于波长多路复用系统的可调光滤波器包括基板，在该基板中形成波导22和在波导顶部的多个可调反射光栅。光栅通常会阻挡入射光波中的所有通道。调整光栅使得它们的反射带与所需的一个或多个通道不重合，从而允许所需的一个或多个通道通过滤波器。衬底可以是半导体，并且提供电极24,26,28,30以调谐每个光栅。或者，使用加热元件调整光栅。 |
| 主权项 | A tunable optical filter, comprising: a first semiconductor substrate having a first electrode means provided on a first surface thereof; a waveguide means formed in and laterally defined within the surface of said substrate for carrying light waves; a plurality of tunable reflection grating means provided on a second surface of said semiconductor substrate on top of said waveguide; an insulating substrate means provided on both sides of said waveguide; and a plurality of electrode means, wherein each of said tunable reflection gratings has an electrode for varying an effective index of refraction of a section of said waveguide below said grating. |
| 申请日期 | 1993-07-29 |
| 专利号 | GB2269679A |
| 专利状态 | 失效 |
| 申请号 | GB1993015730 |
| 公开（公告）号 | GB2269679A |
| IPC 分类号 | G02B | H01S5/00 | H01S5/50 | G02F | G02F1/01 | G02F1/025 | H01S5/12 | G02B6/12 | G02F1/035 |
| 专利代理人 | - |
| 代理机构 | - |
| 文献类型 | 专利 |
| 条目标识符 | http://ir.opt.ac.cn/handle/181661/64048 |
| 专题 | 半导体激光器专利数据库 |
| 作者单位 | TELEFONAKTIEBOLAGET LM ERICSSON |
| 推荐引用方式 GB/T 7714 | JEAN-PIERRE WEBER. Tuneable optical filter. GB2269679A[P]. 1994-02-16. |
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