Ultra-Broadband Photonic Signal-Processor

后续项目的核心目标仍然是设计和实现多功能超宽带光子信号处理器(UB-PSP)，实现波长转换、光相位共轭和光通道切换。由于到目前为止生产的处理器样品的线性串扰(XT)值出人意料地高，已经对潜在原因进行了广泛的调查。因此，第一个项目阶段的一些最后任务被推迟。我们将包括处理器引起的线性XT的扰动，作为我们计划在拟议的第二个项目阶段以升级方式执行的延迟任务的参数。UB-PSP将与传统的相干光发射器/接收器集成在单个电子/光子集成电路(EPIC)上。因此，实现了多功能光发送器/接收器，使得能够为未来的空分复用(SDM)网络提供突破性的灵活性和所需的集成密度。通过对标准单模光纤上多个OPC级的光传输系统的数值模拟，找出最佳的链路设计准则，使系统的性能和容量达到最优。在这里，将使用新的机器学习方法来识别放大器和光纤的真实边界条件下的组件的最佳布置和最佳参数值。将开发一个全面的数值模拟工具来研究在少模光纤通信系统中OPC的潜力。因此，需要研究空分复用系统有效的非线性均衡的新概念。为非线性波导的参数和设计优化开发和使用的数值方法将被机器学习的概念扩展，以确定最优的波导设计规范，这些设计规范在最先进的工艺中是无法实现的，但可能显示出优越的性能，作为对该领域未来研究项目的展望。

The core objective of the Follow-Up-Project is still the design and realization of a multifunctional Ultra-Broadband-Photonic Signal Processor (UB-PSP), enabling Wavelength Conversion, Optical Phase Conjugation, and Switching of optical channels. Due to the unexpected high values of linear Crosstalk (XT) of the processor samples produced to date, extensive investigations of potential reasons have been carried out. Thus, some of the final tasks of the first project phase got delayed. We will include perturbations by processor-induced linear XT as a parameter for the delayed tasks that we plan to carry out in an upgraded manner in the proposed 2nd project phase. The UB-PSP will be integrated with a conventional coherent optical transmitter/receiver on a single electronic/photonic integrated circuit (EPIC). Thus, a multifunctional optical transmitter/receiver is realized enabling groundbreaking flexibility and the required integration density for future Space-Division-Multiplex- (SDM-) networks. The numerical simulation methods for optical transmission systems with multiple OPC stages over Standard-Single-Mode-Fibers will be applied to find optimized link design rules for optimum performance and capacity. Here, novel methods of machine learning will be employed to identify optimum arrangements of the components and optimum parameter values, for realistic boundary conditions of amplifiers and fibers.A comprehensive numerical simulation tool will be developed to investigate the potential of OPC in communication systems over Few-Mode-Fibers. Thus, new concepts for an effective nonlinear equalization of Space-Division-Multiplexed systems shall be investigated.The numerical methods developed and used for parameter- and design-optimization of the nonlinear waveguide will be extended by concepts of machine-learning to identify optimum waveguide design specifications that are beyond realizability for state-of-the-art processes, but might show superior performance, as an outlookinto future research projects in the field.