Reliability-Integrated Packaging for Alignment-Critical Photonics: Decision Frameworks and Portable Stability Metrics

Abstract

Packaging limits scalable deployment of photonic modules because coupling, optimized during permanent attachment, drifts under subsequent mechanical and thermal stress. The central bottleneck is not insufficient alignment capability but the absence of reliability-integrated decision logic and portable stability indicators that survive cross-site transfer without disclosing proprietary optical performance data. This Perspective proposes two constructs: a five-gate decision framework, Reliability-Driven Process Optimization (RDPO), that structures alignment and attachment into auditable stages tied to stability verification, and normalized encoder vector shift metrics derived from standard alignment tools that enable cross-site process control integration without proprietary disclosure. Both constructs are grounded in published post-attach distortion data, a physics-based normalization convention referenced to published coupling tolerance data, and a fully populated minimum reporting template. The framework’s validity relative to passive alignment strategies is established; each drift mechanism is connected to a quantified coupling-loss consequence; and a community standardization roadmap is outlined.