Power efficient nonlinear signal processing with Silicon nano-waveguides

项目工作分别于2016年1月1日（IHP Zimmermann, Gajda，合同于2017年12月31日结束）和2016年1月1日（TUB Petermann, Liebig/Ronniger，合同于2018年4月30日结束）开始。最初项目的第一个目标是研究波导p-i-n二极管的硅纳米波导技术，通过波导优化以及制造更复杂的波导结构来实现真正的连续波（CW）参数增益。第二个目标是研究在光信号再生领域的可能应用。然而，在整个项目过程中，p-i-n波导技术在光学非线性信号处理方面的潜力比我们最初预期的要大得多。在我们的工作中，我们意识到不仅硅的参数增益是重要的研究。我们还认为有机会使用双极化环路方案来实现与极化无关的四波混频。此外，我们制作了包含p-i-n结环形谐振器的波导结构，以提高在降低泵浦功率时的四波混频效率。鉴于到目前为止取得的大量成果，并考虑到我们技术的支持特性，我们希望请求将项目延长至2020年4月30日，以适当地涵盖原始主题和其他主题。项目的扩展将集中于(A)采用最初项目描述中建议的多级泵送方案实现参数增益。(B)将极化分集环路方案扩展到信号再生(C)低泵浦功率下低损耗环形谐振器的高转换效率现象研究。

The project work was started 01.01.2016 (IHP Zimmermann, Gajda, contract ends 31.12.2017) and 01.05.2016 (TUB Petermann, Liebig/Ronniger, contract ends 30.04.2018), respectively. The first goal of the initial project was to investigate silicon nano-waveguide technology with waveguide p-i-n diodes to achieve real continuous wave (CW) parametric gain by waveguide-optimization as well as the fabrication of more complex waveguide structures. The second goal was to investigate possible applications in the field of optical signal regeneration. However, over the course of the project it became clear that the potential of p-i-n waveguide technology for optical nonlinear signal processing is far bigger than we had expected in the first place. Throughout our work, we realized that not only parametric gain in silicon would be important to investigate. We also perceived the chance to use a dual-polarization loop scheme to achieve polarization independent four-wave-mixing. Furthermore, we fabricated waveguide structures including ring resonators with p-i-n junctions to improve four-wave-mixing efficiency at reduced pump power. In view of the plethora of results so far and considering the enabling character of our technology, we would like to request an extension of the project until 30th of April 2020 to properly cover the original as well as additional topics. The extension of the project will focus on(A) Achievement of parametric gain using the multi-stage-pumping scheme as suggested in the initial project description.(B) Extension of the polarization diversity loop scheme to signal regeneration(C) Study of high conversion efficiency phenomena in low-loss ring resonators at low pump powers.