Monolithic optoelectronic integrated circuits, OEICs are seen as key enabling technologies to minimal power loss criteria. Monolithic OEICs combine, on the same die, cutting-edge optical devices and high speed III-V electronics able to generate terahertz signal targeting beyond-5G networks. Computationally efficient compact models compatible with existing software tool and design flow are essential for timely and cost-effective OEIC achievement. The analog nature of photonic devices wholly justifies the use of methodologies alike the ones employed in electronic design automation, through implementation of accurate (and SPICE-compatible) compact models. This multidisciplinary work, describes an efficient compact model for Uni-Traveling Carrier photodiodes (UTC PD) which is a key component for OEICs. Its equations feature the UTC PD electronic transport and frequency response along with its photocurrent under applied optical power. It also dynamically takes into account the device junction temperature, accounting for the self-heating effect. Excellent agreement between model and measurements as well as model scalability (several geometries have been validated) has been achieved that marks the first demonstration of a multi-physics, computationally efficient and versatile compact model for UTC-PDs.

OEIC是单片光电集成电路，被认为是实现最低功耗标准的关键使能技术。单片OEIC在同一裸片上结合了先进的光学设备和高速III-V电子器件，这些器件能够生成针对5G网络以外的太赫兹信号。与现有软件工具和设计流程兼容的高效计算紧凑模型对于及时，经济高效地实现OEIC至关重要。光子设备的模拟性质通过实现精确（且与SPICE兼容）的紧凑模型，完全证明了该方法在电子设计自动化中的使用是合理的。这项跨学科的工作描述了单向载运光电二极管（UTC PD）的高效紧凑模型，这是OEIC的关键组件。其方程式具有UTC PD电子传输和频率响应以及在施加光功率下的光电流。它还动态考虑了器件结温，并考虑了自热效应。在模型和测量之间以及模型可伸缩性（已验证了几种几何形状）之间达成了极好的协议，这标志着首次展示了针对UTC-PD的多物理场，计算效率高且用途广泛的紧凑型模型。