| 摘要 |
PROBLEM TO BE SOLVED: To provide a method and an apparatus for fiber identification capable of light continuity test for an optic fiber having improved bending loss characteristics. SOLUTION: The fiber identification apparatus for an optic fiber includes a stress applying part for applying a plurality of stresses in a longitudinal direction of the optic fiber for forming temporary grating, and a light receiving part for detecting leakage light of a high-order mode caused by the grating. The fiber identification apparatus may be structured to further include a bend comprising the optic fiber bent on a subsequent stage of the stress applying part to cause the light receiving part to detect the leakage light of the high-order mode by the bend. The plurality of stresses can be applied by physical unevenness or by physical vibration. The fiber identification apparatus can be provided, which is capable of light continuity test even for the optic fiber such as a hole-assist fiber having the improved bending loss characteristics by the grating temporarily formed on the optic fiber. COPYRIGHT: (C)2009,JPO&INPIT |
