Modelling of photoelastic properties of quaternary (InGa)(AsP) semiconductor materials and its impact on PIC performance using atomistic first-principle techniques

使用原子第一原理技术模拟四元 (InGa)(AsP) 半导体材料的光弹性及其对 PIC 性能的影响

• 批准号: 530230-2018
• 负责人: Rubel, Oleg
• 金额: $ 1.82万
• 依托单位: McMaster University
• 依托单位国家: 加拿大
• 项目类别: Engage Grants Program
• 财政年份: 2018
• 资助国家: 加拿大
• 起止时间: 2018-01-01 至 2019-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=663867
• 关键词: Modelling; photoelastic; properties; quaternary; InGa

This proposal addresses a challenge related to control of optical properties of semiconducting materials for**devices used for data centers and long-haul telecommunication networks. Differences in the lattice parameter**between the waveguide material, the cladding layer and the substrate introduce an anisotropic epitaxial stress in**the film, which causes a dispersion of the signal (i.e., different components of a signal travel at different**velocities). This unwanted dispersion hinders the performance of interferometric devices such as switches for**telecommunication applications thereby posing a challenging technical problem. During product development,**if the stress can be accurately predicted then it can be either controlled, or compensated, or could even be made**use of for new device functions. On the other side, the uncontrolled stress could have detrimental effect on the**device performance and lower the production yield. The goal of this project is to provide ArtIC Photonics with**photoelastic material properties of the quaternary compound needed for quantitative modelling of the strain**effects in optical waveguides. The later will be achieved using atomistic first-principle material simulation**modelling. Material properties obtained as a result of our modelling efforts will be integrated into the device**simulation to examine the effects of the strain on device performance and compared with the experimental**measurements performed by the industrial partner (ArtIC Photonics).

该提案解决了与数据中心和长途电信网络所用**设备的半导体材料的光学特性控制有关的挑战。波导材料、包覆层和衬底之间的晶格参数**的差异在薄膜中引入了各向异性外延应力，这导致了信号的色散(即，信号的不同分量以不同的**速度传播)。这种不想要的色散阻碍了诸如用于**电信应用的开关之类的干涉设备的性能，从而提出了一个具有挑战性的技术问题。在产品开发过程中，**如果可以准确地预测应力，则可以对其进行控制或补偿，甚至可以**将其用于新的设备功能。另一方面，不受控制的应力可能会对**器件性能产生不利影响，并降低生产成品率。该项目的目标是为Artic Photonics提供四元化合物的**光弹材料特性，用于定量模拟光波导中的应变**效应。后者将使用原子第一原理材料模拟**模型来实现。通过我们的建模工作获得的材料属性将被集成到设备**模拟中，以检查应变对设备性能的影响，并与工业合作伙伴(Artic Photonics)执行的实验**测量进行比较。