公开(公告)号：US20230204875A1

公开(公告)日：2023-06-29

申请号：US17561063

申请日：2021-12-23

Applicant: Nokia Solutions and Networks OY

Inventor： Alexandre Horth ,  Jiabao Zheng ,  Matthew Streshinsky

IPC: G02B6/42

CPC classification number: G02B6/4206

Abstract: A PIC comprising an optical edge coupler having a plurality of optical cores within a heterogeneous stack of dielectric layers providing an optical cladding for the optical cores. The layer stack comprises first and second groups of layers, wherein refraction-index differences between individual layers of the same group are much smaller than refraction-index differences between any two layers from different groups. The optical cores are arranged in a plurality of parallel planar arrays enabling a large MFD change. At least one of the arrays is located within the first group of layers, and at least another one of the arrays is located within the second group of layers. End sections of the optical cores are adjacent to an edge of the PIC and may be optically coupled to an external optical fiber or on-chip waveguide of another PIC for a low-loss transfer of optical power therebetween.

公开(公告)号：US20240210620A1

公开(公告)日：2024-06-27

申请号：US18087792

申请日：2022-12-22

Applicant: Nokia Solutions and Networks Oy

Inventor： Jiabao Zheng ,  Alexandre Horth ,  Ruizhi Shi

IPC: G02B6/122

CPC classification number: G02B6/1228 ,  G02B2006/1204

Abstract: An optical device comprises a photonic integrated circuit having an optical mode coupler. The optical mode coupler optically couples a first planar optical waveguide having a first optical core at one horizontal plane to a second planar optical waveguide having a second optical core at a different second horizontal plane. The optical mode coupler comprises two or more intermediate optical layers stacked vertically between the horizontal planes of the optical cores, and intermediate optical layer comprises one or more optical rails. The optical mode coupler causes light received from the first planar optical waveguide to excite an optical mode and guide the light of the optical mode such that the optical mode substantially overlaps the first planar optical waveguide and the optical rails of at least two of the intermediate optical layers in a vertical cross-section of the photonic integrated circuit.

公开(公告)号：US12019286B2

公开(公告)日：2024-06-25

申请号：US17561063

申请日：2021-12-23

Applicant: Nokia Solutions and Networks OY

Inventor： Alexandre Horth ,  Jiabao Zheng ,  Matthew Streshinsky

IPC: G02B6/42

CPC classification number: G02B6/4206

Abstract: A PIC comprising an optical edge coupler having a plurality of optical cores within a heterogeneous stack of dielectric layers providing an optical cladding for the optical cores. The layer stack comprises first and second groups of layers, wherein refraction-index differences between individual layers of the same group are much smaller than refraction-index differences between any two layers from different groups. The optical cores are arranged in a plurality of parallel planar arrays enabling a large MFD change. At least one of the arrays is located within the first group of layers, and at least another one of the arrays is located within the second group of layers. End sections of the optical cores are adjacent to an edge of the PIC and may be optically coupled to an external optical fiber or on-chip waveguide of another PIC for a low-loss transfer of optical power therebetween.