Generalized fiber Fourier optics.
Generalized fiber Fourier optics.
复制标题
广义光纤傅里叶光学。
作者：
G. Cincotti
对执行离散傅里叶变换（DFT）的光学方案进行了双重推广：提出了新的无源平面结构，其中2x23db耦合器被M × M混合电路取代，减少了所需连接和移相器的数量。此外，还描述了离散分数阶傅立叶变换（DFrFT）的平面实现，其中包括波导光栅路由器（WGR）配置和适当修改的平板耦合器。
A twofold generalization of the optical schemes that perform the discrete Fourier transform (DFT) is given: new passive planar architectures are presented where the 2 × 2 3 dB couplers are replaced by M × M hybrids, reducing the number of required connections and phase shifters. Furthermore, the planar implementation of the discrete fractional Fourier transform (DFrFT) is also described, with a waveguide grating router (WGR) configuration and a properly modified slab coupler.