Patent ID: 8983256
Filing Date: 2015-03-17
Classification: G02B

Abstract:
1. An optical fiber cable having an optical fiber comprising a core, and a cladding provided around the core, the optical fiber cable comprising: an inside tube housing an exposed portion of the cladding in an end portion of the optical fiber; and an outside tube provided so as to surround the inside tube, wherein the exposed portion of the cladding is subjected to a treatment for removing light propagating in the cladding, wherein at least an inner wall surface of the inside tube is made so as to have a light reflecting property and absorb part of the light removed from the cladding, wherein a space portion is formed between the optical fiber and the inside tube, and wherein the light removed from the cladding is gradually attenuated and averaged by multiple reflection on the inside tube and on the cladding in the space portion.