Optical threshold and comparison devices and methods
文献类型：专利
| 作者 | MARAZZI, LUCIA; MARTINELLI, MARIO; PAROLARI, PAOLA |
| 发表日期 | 2004-07-20 |
| 专利号 | US6766072 |
| 著作权人 | GOOGLE LLC |
| 国家 | 美国 |
| 文献子类 | 授权发明 |
| 其他题名 | Optical threshold and comparison devices and methods |
| 英文摘要 | An optical device for providing threshold and comparison functions. The device comprises first and second SOA's having respective first and second propagation paths along which the first and second optical signals, input as signals Pin1(lambda1) and Pin2(lambda2) travel in first and second forward directions. A feedback path is provided using couplers to interconnect the outputs of the SOA's. As a result, a portion of the optical signals output from each SOA is supplied backwards into the output of the other SOA as feedback optical control signals Pfeedback1(lambda1) and Pfeedback2(lambda). The feedback optical control signals modulate the gain of the forwards travelling optical signals by cross gain modulation (XGM). In contrast to prior art devices, the optical control signal is supplied backwards into the SOA's in a counter-propagating configuration. This allows much shorter feedback path lengths to be achieved in comparison to what is possible with prior art co-propagating configurations. Consequently, much higher bit rates can be achieved. The device may also be implemented in planar waveguide technology. |
| 公开日期 | 2004-07-20 |
| 申请日期 | 2001-07-27 |
| 状态 | 授权 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/45736]  |
| 专题 | 半导体激光器专利数据库 |
| 作者单位 | GOOGLE LLC |
| 推荐引用方式 GB/T 7714 | MARAZZI, LUCIA,MARTINELLI, MARIO,PAROLARI, PAOLA. Optical threshold and comparison devices and methods. US6766072. 2004-07-20. |
入库方式： OAI收割
来源：西安光学精密机械研究所
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