Radiation from the Compact Fiber develops the radiation sector of the compact-fiber framework as a unified benchmark architecture rather than a collection of disconnected phenomenon-specific models. The paper shows how one radiation-side structural hierarchy, together with the previously established representational/readout layer, recovers a broad benchmark class including polarization, single-photon interference, Bell polarization correlation, Hong–Ou–Mandel bunching, orbital-angular structure, and the photoelectric event architecture. It also states the associated scaling bridge between recurrence-based natural content and conventional energy–frequency units. The central claim is not that all radiation physics is completed here, but that within the stated benchmark regime, these phenomena can be recovered with fewer independent starting assumptions and greater structural continuity than in the usual compartmentalized treatments. The paper introduces a reusable radiation network calculus, derives the Bell opposed-pair state from an opposition condition rather than positing it, treats HOM bunching through explicit two-photon cancellation, derives integer angular quantization from coherent closure on a compact transverse cycle, and models photoelectric emission as a per-mode radiation–matter transfer event. Claim strength is stated explicitly throughout, with boundaries and exclusions recorded to keep the scope disciplined.