US 12,019,276 B2
Optical connector module and method of manufacturing optical waveguide board
Masatoshi Tsunoda, Machida (JP); Takahiro Suzuki, Yamato (JP); and Mitsuaki Tounoo, Yokohama (JP)
Assigned to KYOCERA CORPORATION, Kyoto (JP)
Appl. No. 17/425,289
Filed by KYOCERA CORPORATION, Kyoto (JP)
PCT Filed Jan. 17, 2020, PCT No. PCT/JP2020/001610
§ 371(c)(1), (2) Date Jul. 22, 2021,
PCT Pub. No. WO2020/153276, PCT Pub. Date Jul. 30, 2020.
Claims priority of application No. 2019-010561 (JP), filed on Jan. 24, 2019.
Prior Publication US 2022/0082760 A1, Mar. 17, 2022
Int. Cl. G02B 6/42 (2006.01); G02B 6/30 (2006.01)
CPC G02B 6/30 (2013.01) [G02B 6/4228 (2013.01); G02B 6/423 (2013.01)] 12 Claims
OG exemplary drawing
 
1. An optical connector module comprising:
an optical waveguide board; and
an optical connector attached to the optical waveguide board,
wherein the optical connector includes
a positioning target portion that engages with the optical waveguide board, and
the optical connector is positioned relative to the optical waveguide board in a state in which the positioning target portion is engaged with the optical waveguide board,
wherein the optical waveguide board includes
an optical waveguide including a first cladding and a core stacked on the first cladding,
the first cladding being stacked on a substrate in a stacking direction perpendicular to the substrate, and
a positioning core that is stacked on the first cladding by using a material the same as a material of the core and that engages with the positioning target portion,
wherein the positioning core protrudes further than the core toward a side opposite to the substrate in the stacking direction,
wherein a section of the positioning target portion is semicircular, and
wherein the positioning core includes:
a small-width portion accommodated in the positioning target portion in planar view,
a large-width portion located outside the positioning target portion in planar view and having a larger width than the small-width portion, and
an engagement portion that is continuously formed so as to gradually become wider from the small-width portion toward the large-width portion and contact an end Portion of the positioning target portion.