| 摘要 |
A coated optical fiber identifying apparatus is provided, which can realize coated optical fiber identification for a single mode optical fiber with holes. The coated optical fiber identifying apparatus comprises a grating forming tool 20 for forming a grating by applying a force to an optical fiber with a plurality of protrusions 23, and a photo detector 30 for detecting leak light generated in the optical fiber 1, wherein the plurality of the protrusions 23 are arranged in a period Λ within a range of 0.24 mm to 0.75 mm.
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