US 11,860,438 B2
Method for manufacturing intermittent connection-type optical fiber tape core wire and intermittent connection-type optical fiber tape core wire
Fumiaki Sato, Osaka (JP); Keigo Yamamoto, Osaka (JP); Fumikazu Yoshizawa, Osaka (JP); and Ken Takahashi, Osaka (JP)
Assigned to SUMITOMO ELECTRIC INDUSTRIES, LTD., Osaka (JP)
Appl. No. 17/998,882
Filed by SUMITOMO ELECTRIC INDUSTRIES, LTD., Osaka (JP)
PCT Filed Jul. 28, 2021, PCT No. PCT/JP2021/027906
§ 371(c)(1), (2) Date Nov. 15, 2022,
PCT Pub. No. WO2022/025116, PCT Pub. Date Feb. 3, 2022.
Claims priority of application No. 2020-128531 (JP), filed on Jul. 29, 2020.
Prior Publication US 2023/0213711 A1, Jul. 6, 2023
Int. Cl. G02B 6/44 (2006.01); G02B 6/38 (2006.01); G02B 6/40 (2006.01)
CPC G02B 6/448 (2013.01) [G02B 6/3801 (2013.01); G02B 6/40 (2013.01); G02B 6/4403 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A method for manufacturing an intermittently coupled-type optical fiber ribbon, comprising:
arranging a plurality of optical fibers in parallel in a direction orthogonal to a longitudinal direction of the plurality of optical fibers;
coating all of the plurality of optical fibers with a coupling resin; and
intermittently inserting a cleaving blade into the coupling resin between some adjacent optical fibers of the plurality of optical fibers to form slits, wherein
an outer diameter of each of the optical fibers is 220 μm or less,
a distance between the optical fibers into which the cleaving blade is inserted among the adjacent optical fibers is 10 μm or more and 100 μm or less, and
the method further comprises inserting the cleaving blade after the coupling resin is cured with a gel fraction of 90% or more.