US 11,960,123 B2
Optical interconnect structure
Yohei Saito, Tokyo (JP); Kota Shikama, Tokyo (JP); and Atsushi Aratake, Tokyo (JP)
Assigned to Nippon Telegraph and Telephone Corporation, Tokyo (JP)
Appl. No. 17/286,763
Filed by Nippon Telegraph and Telephone Corporation, Tokyo (JP)
PCT Filed Nov. 8, 2019, PCT No. PCT/JP2019/043839
§ 371(c)(1), (2) Date Apr. 19, 2021,
PCT Pub. No. WO2020/105473, PCT Pub. Date May 28, 2020.
Claims priority of application No. 2018-219015 (JP), filed on Nov. 22, 2018.
Prior Publication US 2021/0373244 A1, Dec. 2, 2021
Int. Cl. G02B 6/32 (2006.01)
CPC G02B 6/32 (2013.01) 16 Claims
OG exemplary drawing
 
1. An optical connection structure comprising:
a first optical waveguide having a first light incidence/emission end face;
a second optical waveguide having a second light incidence/emission end face facing the first light incidence/emission end face of the first optical waveguide;
an optical element between the first light incidence/emission end face and the second light incidence/emission end face;
a focus lens between the first light incidence/emission end face and the optical element or between the second light incidence/emission end face and the optical element, wherein the focus lens is disposed on an optical axis that connects the first light incidence/emission end face and the second light incidence/emission end face; and
a resin layer having a refractive index different than a refractive index of the focus lens, the resin layer being filled in between the first light incidence/emission end face and the optical element or between the second light incidence/emission end face and the optical element, wherein the focus lens is embedded in the resin layer.