The polishing pattern used for hand-polishing a multimode connector is illustrated by which figure?

The polishing pattern used for hand-polishing a multimode connector is illustrated by which figure?

• A. Figure 6
• B. Figure 7
• C. Figure 8
• D. Figure 9

Answer: (C)

The important idea here is how polishing action covers the end-face evenly. A pattern that traces a figure-eight works best because it moves the abrasive across the ferrule in two directions within the same motion. This ensures every area of the end-face samples the abrasive, reducing the chance of creating straight scratches or uneven wear that can happen with a single-direction stroke. For multimode connectors, the larger core means you want a forgiving, uniform finish to minimize surface irregularities that can scatter light; the figure-eight motion achieves that by distributing abrasion across the surface in multiple orientations. In short, it produces a smooth, flat end-face by engaging the whole area more uniformly than a straight-line or purely circular pattern would.

The important idea here is how polishing action covers the end-face evenly. A pattern that traces a figure-eight works best because it moves the abrasive across the ferrule in two directions within the same motion. This ensures every area of the end-face samples the abrasive, reducing the chance of creating straight scratches or uneven wear that can happen with a single-direction stroke. For multimode connectors, the larger core means you want a forgiving, uniform finish to minimize surface irregularities that can scatter light; the figure-eight motion achieves that by distributing abrasion across the surface in multiple orientations. In short, it produces a smooth, flat end-face by engaging the whole area more uniformly than a straight-line or purely circular pattern would.