US 12,321,027 B2
Optical fiber ribbon
Toshihisa Sato, Osaka (JP); and Takashi Fujii, Osaka (JP)
Assigned to SUMITOMO ELECTRIC INDUSTRIES, LTD., Osaka (JP)
Appl. No. 18/257,630
Filed by SUMITOMO ELECTRIC INDUSTRIES, LTD., Osaka (JP)
PCT Filed Dec. 8, 2021, PCT No. PCT/JP2021/045101
§ 371(c)(1), (2) Date Jun. 15, 2023,
PCT Pub. No. WO2022/131099, PCT Pub. Date Jun. 23, 2022.
Claims priority of application No. 2020-210491 (JP), filed on Dec. 18, 2020.
Prior Publication US 2024/0045162 A1, Feb. 8, 2024
Int. Cl. G02B 6/44 (2006.01)
CPC G02B 6/4403 (2013.01) 4 Claims
OG exemplary drawing
 
1. An intermittently coupled optical fiber ribbon in which a bonded portion in which adjacent optical fibers are bonded by an adhesive resin and a non-bonded portion in which the adjacent optical fibers are not bonded by the adhesive resin are intermittently provided in a longitudinal direction among a part or all of a plurality of optical fibers arranged side by side in a width direction orthogonal to the longitudinal direction, wherein
the bonded portion is provided on one side of the optical fiber ribbon,
a part of the bonded portion protrudes further than a tangent line passing through surfaces of the adjacent optical fibers on the one side,
in the longitudinal direction, at least one of longitudinal end portions of the bonded portion has a larger protrusion height than a central portion of the bonded portion, and
the adhesive resin has a composite elastic modulus of 0.5 GPa or more and 6.0 GPa or less at 23° C.