95‐1: Micro‐LED and Fiber Interface Design for Optical Communications

Micro‐LED arrays enable high‐bandwidth chip‐to‐chip optical communication, but fiber coupling loss and inter‐core crosstalk at the LED‐fiber interface remain key barriers to efficient integration. This work establishes a quantitative framework to evaluate how interface gap, core diameter, and misalignment affect coupling efficiency, revealing key design trade‐offs. Subsequently, we introduce several interface designs to optimize coupling efficiency and crosstalk, including high‐refractive‐index fiber core, micro‐lens, adhesive filling, non‐uniform core diameters and oversampled coupling arrangement. The results provide practical guidelines for high‐speed, energy‐efficient inter‐chip optical links.