OPTICAL FIBER AND ITS DISCRIMINATING METHOD

• Main Authors: IWATA HIDEYUKI, TOMITA SHIGERU, KIHARA MITSURU
• Format: Patent
• Language: English
• Published: 10.02.1994
• Edition: 5
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; MEASURING; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; PHYSICS; TESTING; TESTING STATIC OR DYNAMIC BALANCE OF MACHINES ORSTRUCTURES; TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR; TRANSMISSION

PURPOSE:To provide the optical fiber and its discriminating method which can exactly retrieve facility information on coated optical fiber discrimination, etc., in real time. CONSTITUTION:At plural, e.g. eight places in this case where nearly constant intervals are left lengthwise, cores 10 of optical fibers are expanded at a specific rate to form core expansion storage parts 11a-11e, or left, as they are. Namely, unexpanded parts 12a-12c are formed and when pulsative lights are made incident, the intensity level of backward scattered light which varies large (13a-13e) for the core expansion storage parts 11a-11e and has a little variation (14a-14c) for the unexpanded parts 12a-12c is obtained to store information on core numbers, etc.