Integration of Substrate-Mode Diffractive Optical Interconnects with Board Level Electronic Processing Systems

在提议的工作中，将解决关键的设计和实施问题，这将使自由空间光学在板互连级别上成为更可行的互连替代方案。本工作的主要目标是：a)制定一个包含自由空间光互连相关光学和电学特性的布局和设计程序。b)将光刻形成的二元光学元件的对准特性与体光栅的高空间频率记录能力和单次曝光形成特性相结合。c)评估减少自由空间波束在板间传播的不对中效应的方法，建立最小的基板模式全息互连集，用于在板平面内分布信号。开发和评估带有电子处理器元件的堆叠光学系统的校准和封装技术。e)利用互连设计模型，构建板级互连系统，在三块板之间并行传输数据。板上的互连位置将被优化以减少延迟效应。

In the proposed work key design and implementation issues will be addressed which will make free-space optics a more viable interconnect alternative at the board interconnection level. The major goals of this work are to: a) Develop a layout and design program which includes relevant optical and electrical properties of free space optical interconnects. b) Combine the alignment properties of lithographically formed binary optical elements with the high spatial frequency recording capability and single exposure formation properties of volume gratings. c) Evaluate methods to reduce misalignment effects of free space beams propagating between boards, and establish a minimal set of substrate-mode holographic interconnects for distributing signals in the plane of the board. d) Develop and evaluate alignment and packaging techniques for stacked optical systems with electronic processor elements. e) Use the interconnect design model to build a board level interconnect system which transfers data in parallel between three boards. The interconnect locations on boards will be optimized to reduce latency effects.