prov:value
| - The ferrule 12, which may be made of ceramic, stainless steel, polymer, glass, metal, metal alloy, or other suitable material, may be precision bored throughout its length, for example, exactly in its center, with a possibly circular hole 16 of a diameter that is advantageously only nominally larger, equal to, or slightly smaller, than the diameter of, for example, the optical fiber.
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