| 发明名称 | Controllable opto-electronic time stretcher, an electro-optical analog to digital converter having non-uniform sampling using the same, and related methods of operation | ||
| 摘要 | A controllable opto-electronic time stretcher comprising a first wave guide and a second waveguide coupled to the first waveguide along a coupling portion; wherein at least one of the first and second waveguides in the coupling portion has a controllable refractive index. | ||
| 申请公布号 | US9438263(B1) | 申请公布日期 | 2016.09.06 |
| 申请号 | US201514702195 | 申请日期 | 2015.05.01 |
| 申请人 | HRL Laboratories, LLC | 发明人 | Ng Willie W.;Ahmed Mohiuddin;Rockwood Troy |
| 分类号 | H03M1/00;H03M1/12;G02F1/01 | 主分类号 | H03M1/00 |
| 代理机构 | Ladas & Parry | 代理人 | Ladas & Parry |
| 主权项 | 1. A method of sampling an analog signal having a predetermined spectrum, the method comprising: when said analog signal corresponds to a K sparse vector of N coefficients, with K<<N, using one or more opto-electronic devices, spreading in time said analog signal according to a predetermined pseudo-random pattern into a pseudo-randomly time-spread signal; on a predetermined time period, taking M samples by sampling the pseudo-randomly time-spread signal at a predetermined rate, said predetermined rate being lower than the Nyquist rate, where M≧K.log(N/K); associating the M samples to the time at which they would have been taken if said analog signal had been spread uniformly during said time period by a spread factor equal to the mean of the pseudo-randomly spread factor on said time period; and determining iteratively the closest output signal that would have allowed extracting the M samples at their associated times. | ||
| 地址 | Malibu CA US | ||