Sequential Fabrication and Heterogeneous Assembly Process for a Five-Layer Optoelectronic RF-Photonic System-on-Package (N12 / 12N Platform)

This paper specifies a sequential, layer-by-layer fabrication and heterogeneous assembly process for the MVMLabs Model 12N (“N12”) system-on-package, a five-layer optoelectronic radio-frequency photonic module integrating TSMC 3 nm (N3E) logic, HBM3e memory, a silicon-nitride optical routing layer, a dynamic holographic polymer storage layer, an In:ZnO/p-Si optoelectronic carrier-generation layer, and a GaAs RF/microwave transceiver layer on a 65 nm silicon CoWoS-S interposer. Building on the operational performance profile and optimization appendix previously established for this architecture, this document translates each layer's target process window into an ordered manufacturing sequence — interposer fabrication, waveguide and photodetector formation, holographic polymer deposition and encapsulation, die-level bonding, and final package finishing — together with the process control parameters, in-line test checkpoints, and yield/qualification considerations required to move the concept from TRL 2–4 toward a pilot-line-manufacturable article. The process flow is presented as a concept-level engineering disclosure; it is not a validated production traveler and several unit operations (notably co-integration of a photorefractive polymer layer within a 700+ W thermal budget package) remain open engineering risks requiring further TRL advancement.