Automated optical MDF system
文献类型：专利
| 作者 | KANAI, TSUNEO; HOSOKAWA, SHIGEFUMI; SASAKURA, KUNIHIKO; INAGAKI, SYUICHIROU; UMEMURA, SHIGERU; KIMURA, HIROBUMI; NAGAYAMA, AKIRA; MAKIHARA, MITSUHIRO; KAWACHI, MASAO |
| 发表日期 | 1997-03-26 |
| 专利号 | EP0494768B1 |
| 著作权人 | NIPPON TELEGRAPH AND TELEPHONE CORPORATION |
| 国家 | 欧洲专利局 |
| 文献子类 | 授权发明 |
| 其他题名 | Automated optical MDF system |
| 英文摘要 | In an optical MDF (main distributing frame) for interconnecting external subscriber optical lines (122) with office optical lines (131) through jumpering operation, a matrix waveguide (128, 129, 130) having a plurality of crosspoints coupled with external lines and office lines is used. The matrix waveguide has a groove (235 in Fig.4A) at each crosspoint so that said crosspoint is switched ON or OFF depending upon whether said groove is filled with matching oil or not, so that one of the external lines is connected to the selected office line. Said matching oil has the same refractive index as that of waveguides. Each crosspoint groove is coupled with a respective oil pool (236), which supplies matching oil which has essentially the same refractive index as that of a waveguide to said groove. Switching at a crosspoint is carried out in a manner that a light signal in a waveguide goes straight through the crosspoint when a groove is filled with matching oil, and the light signal changes its direction at the crosspoint through total internal reflection when the groove is empty. A jumpering operation to connect or disconnect a crosspoint is carried out by a robot (133), which fills or pulls out matching oil in the oil pool at the designated coordinates. Each external line is branched by using an optical directional coupler (237) for test purposes, and one of the branch lines subject to test is selected by using a similar lxN type matrix waveguide. |
| 公开日期 | 1997-03-26 |
| 申请日期 | 1992-01-08 |
| 状态 | 失效 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/36077]  |
| 专题 | 半导体激光器专利数据库 |
| 作者单位 | NIPPON TELEGRAPH AND TELEPHONE CORPORATION |
| 推荐引用方式 GB/T 7714 | KANAI, TSUNEO,HOSOKAWA, SHIGEFUMI,SASAKURA, KUNIHIKO,et al. Automated optical MDF system. EP0494768B1. 1997-03-26. |
入库方式： OAI收割
来源：西安光学精密机械研究所
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