US 11,703,647 B2
Optical fiber securing structure and laser device
Ryokichi Matsumoto, Chiba (JP); Yoshitaka Nakamura, Chiba (JP); Naoyuki Sugiyama, Chiba (JP); Hiroto Nakazato, Tokyo (JP); Yasushi Oikawa, Chiba (JP); and Akari Takahashi, Chiba (JP)
Assigned to Fujikura Ltd., Tokyo (JP)
Appl. No. 17/631,784
Filed by FUJIKURA LTD., Tokyo (JP)
PCT Filed Sep. 14, 2020, PCT No. PCT/JP2020/034662
§ 371(c)(1), (2) Date Jan. 31, 2022,
PCT Pub. No. WO2021/070567, PCT Pub. Date Apr. 15, 2021.
Claims priority of application No. 2019-185278 (JP), filed on Oct. 8, 2019; and application No. 2020-024236 (JP), filed on Feb. 17, 2020.
Prior Publication US 2022/0269018 A1, Aug. 25, 2022
Int. Cl. G02B 6/38 (2006.01); G02B 6/255 (2006.01); G02B 6/02 (2006.01); G02B 6/46 (2006.01)
CPC G02B 6/3889 (2013.01) [G02B 6/2556 (2013.01); G02B 6/0218 (2013.01); G02B 6/46 (2013.01)] 9 Claims
OG exemplary drawing
 
1. An optical fiber securing structure comprising:
an optical fiber including:
a coating; and
a coating-removed section in which a partial section of the coating is removed from the optical fiber;
a reinforcement member including:
main surfaces; and
a groove formed from one of the main surfaces toward an inside of the reinforcement member, where the groove has a pair of side walls and a bottom wall; and
a resin member that secures the coating-removed section to the pair of side walls and the bottom wall, wherein
a bottom part of the groove that includes the bottom wall has a widthwise cross-sectional shape where the bottom wall constitutes a trapezoidal shape such that a distance between the pair of side walls becomes greater in a direction away from the bottom wall, and
the coating-removed section is apart from the pair of side walls and the bottom wall in a cross section orthogonal to a lengthwise direction of the optical fiber.