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This presentation examines the complex requirements and advanced techniques involved in processing Photonic Integrated Circuits (PICs) and associated waveguides, which are essential for the next generation of high-speed components and quantum computing. Achieving the necessary optical performance requires meticulous polishing, a process that is far more demanding for these applications than standard fiber optic connector polishing. We will address the critical variables in PIC processing, such as waveguide loading and referencing, fixture design and alignment mechanisms for maintaining critical geometries, and micron-level positioning for dimensional control. The presentation will highlight the importance of adaptive and programmable equipment that can adjust for initial chip surface conditions and dicing quality. Methods will be reviewed for controlling edge uniformity, parallelism, material removal, and surface finish. In-line video inspection techniques, which are crucial for monitoring polishing processes and verifying surface finish quality, will be discussed. The challenges of scaling production from an R&D level to high-volume manufacturing will be outlined. These include increasing component capacity and higher levels of automation to increase product throughput while maintaining consistency. We will conclude with a short summary regarding the processing of interconnects such as fiber arrays, v-grooves, optical chips, and lensed fibers. These components provide the critical photonic input and output means via interfacing with PICs.