Monolithically Integrated Nonreciprocal Garnet Devices on Semiconductor Platforms

该提案的目标涉及研究和教育目标，这将使磁光石榴石集成在非互易器件中，以实现源集成光子和光电集成电路（PIC/OEIC）。石榴石是这种器件的明显材料，由于其品质因数（旋转/损耗）比任何其他磁光材料高几个数量级，但石榴石与半导体平台的集成长期以来一直被认为是不可能的。 智力优势：使用最近开发的工艺，石榴石器件将在Si，InP和GaAs上实现，用于近红外（1.3和1.55 μ m）和红外（~ 2 μ m）波长。研究将集中在掺杂石榴石波导隔离器，石榴石光子晶体（PC）循环器，石榴石芯隔离器（与石榴石包层的倏逝波耦合），和准相位匹配旋转器。 这些器件将是同类器件中第一个单片集成的，因此它们有望改变光子学领域。 更广泛的影响。该项目将推进发现和理解，同时通过K-12外展促进研究生培训的教学，培训和学习，包括关注代表性不足的群体。此外，该项目真正实现了光子学中的“缺失环节”，使第一代光源将与光子集成电路和光电集成电路集成在一起。

The objectives of this proposal involve research and education goals that will allow the integration of magneto-optical garnet in non-reciprocal devices to enable source-integrated photonic and optoelectronic integrated circuits (PICs/OEICs). Garnet is the obvious material for such devices, due to its figure-of-merit (rotation/loss) which is several orders of magnitude higher than any other magneto-optcical material, but the integration of garnet with semiconductor platforms has long been thought impossible. Intellectual Merit: Using a recently developed process, garnet devices will be realized here on Si, InP and GaAs for use in the near infrared (1.3 and 1.55um) and infrared (~2um) wavelengths. The research will focus on doped garnet waveguide isolators, garnet photonic crystal (PC) circulators, semiconductor-core isolators (with garnet claddings for evanescent coupling), and quasi-phase matched rotators. These devices will be the first of their kind to be monolithically integrated, and they therefore promise to transform the field of photonics. Broader Impact. This project will advance discovery and understanding while promoting teaching, training, and learning from graduate student training through K-12 outreach, including a focus on under-represented groups. In addition, this project truly enables the "missing link" in photonics such that the first generation light sources will be integrated with photonic integrated circuits and opto-electronic integrated circuits near the completion of this project.