Patent ID: 9244217
Filing Date: 2016-01-26
CPC Classification: G02B,H04B

Claim Text:
1. A multi-core optical fiber having plural cores in a common cladding, the multi-core optical fiber having: a first end face; and a second end face opposing the first end face, wherein the cores are completely separated to each other through part of the common cladding. wherein each of the cores has an input end into which signal light is inputted, and an output end from which the signal light is outputted, and wherein the input end of each of the cores is arranged on the first end face or the second end faces, and the output end of each of the cores is arranged on the first end face or the second end faces so that two or more cores keeping an interval therebetween of not less than a predetermined interval among the cores individually transmit the signal in a first direction, whereas two or more cores keeping an interval therebetween of not less than the predetermined interval among the cores individually transmit the signal in a second direction opposite to the first direction.