Optical clock system for computers
文献类型：专利
| 作者 | FAN, BUNSEN; OPRYSKO, MODEST M.; RAND, RICKY A. |
| 发表日期 | 1990-11-22 |
| 专利号 | EP0398038A2 |
| 著作权人 | INTERNATIONAL BUSINESS MACHINES CORPORATION |
| 国家 | 欧洲专利局 |
| 文献子类 | 发明申请 |
| 其他题名 | Optical clock system for computers |
| 英文摘要 | An optical clock system for high-performance computing systems uses unique methods of clock generation, delay timing, and electrical clock conversion to eliminate clock skew due to passive circuit elements. There is provided a direct optical connection to active devices in the computing system thereby eliminating the transmission of electrical clock signals through passive transmission elements. The optical clock system eliminates several stages of clock drivers and, as a result, is capable of reducing clock skew due to active circuit skew as well. In one embodiment, an optical pulse timing generator (10) produces ultrashort pulses which are equally divided by an 1-by-N splitter (16) into N optical fibers (18), where N depends on the number of clock signals required. Each fiber has a different length, resulting in different propagation times for the optical pulses. The light from each of the N fibers are again split into M fibers by N 1-by-M splitters (20), where M depends upon the number of distribution points for the clock. The NxM fibers are regrouped to form a bundle of N fibers, and these M fiber bundles are then coupled to each module (22) where the delayed optical signals are converted into the appropriate electrical clock signals. |
| 公开日期 | 1990-11-22 |
| 申请日期 | 1990-04-20 |
| 状态 | 失效 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/51889]  |
| 专题 | 半导体激光器专利数据库 |
| 作者单位 | INTERNATIONAL BUSINESS MACHINES CORPORATION |
| 推荐引用方式 GB/T 7714 | FAN, BUNSEN,OPRYSKO, MODEST M.,RAND, RICKY A.. Optical clock system for computers. EP0398038A2. 1990-11-22. |
入库方式： OAI收割
来源：西安光学精密机械研究所
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