In this technical walkthrough, we demonstrate the key specifications and real-world applications of 0.2NA bare optical multimode fibers with core diameters of 50μm, 105μm, and 200μm. You'll see detailed comparisons between high-OH and low-OH variants across wavelength ranges from 250-1200nm to 400-2400nm, learn about solarization effects below 300nm, and discover compatible patch cable configurations for various industrial and laboratory scenarios.