公开(公告)号：EP4083670A1

公开(公告)日：2022-11-02

申请号：EP21305558.5

申请日：2021-04-30

申请人： Nokia Solutions and Networks Oy

发明人： AIMONE, Alessandro

IPC分类号： G02B6/10 ,  G02B6/126 ,  G02B6/27

摘要： A photonic integrated circuit (PIC) in which some optical waveguides have laterally tilted waveguide cores used to implement passive polarization-handling circuit elements, e.g., suitable for processing polarization-division-multiplexed optical communication signals. Different sections of such waveguide cores may have continuously varying or fixed lateral tilt angles. Different polarization-handling circuit elements can be realized, e.g., using different combinations of end-connected untilted and laterally tilted waveguide-core sections. In some embodiments, laterally tilted waveguide cores may incorporate multiple-quantum-well structures and be used to implement active circuit elements. At least some embodiments beneficially lend themselves to highly reproducible fabrication processes, which can advantageously be used to achieve a relatively high yield of the corresponding PICs during manufacture.

公开(公告)号：EP4462173A1

公开(公告)日：2024-11-13

申请号：EP24162826.2

申请日：2024-03-12

申请人： Nokia Solutions and Networks Oy

发明人： AIMONE, Alessandro ,  THOMAS, Philipp

IPC分类号： G02F1/01 ,  G02F1/03 ,  G02F1/035 ,  G02F1/21 ,  G02F1/225

摘要： A planar electro-optic Mach-Zehnder modulator (MZM) includes two optical waveguide arms and three drive electrodes extending along the optical waveguide arms to modulate light propagating therein. A middle one of the drive electrodes is between the two optical waveguide arms, and the two optical waveguide arms are between outer ones of the drive electrodes. An electrical drive circuit is connected to provide first modulation signals to the two outer ones of the drive electrodes and a second modulation signal to the middle one of the drive electrodes, wherein the second modulation signal is voltage-inverted relative to the first modulation signals.

公开(公告)号：EP4266099A1

公开(公告)日：2023-10-25

申请号：EP22168709.8

申请日：2022-04-19

申请人： Nokia Solutions and Networks Oy

发明人： AIMONE, Alessandro

IPC分类号： G02B6/12 ,  G02B6/125

摘要： Optical devices and associated methods of fabricating optical devices. In one embodiment, an optical device (300) comprises a semiconductor substrate (304) having a major surface (306), and an optical waveguide structure (302) on the major surface. The optical waveguide structure comprises a lower optical core (321), an upper optical core (322), and an intermediate optical cladding (504), where the upper optical core is vertically above the lower optical core and the intermediate optical cladding separates and is in contact with the optical cores. The optical cores are optically coupled in first and second sections of the optical waveguide structure near the respective first and second ends, and the optical waveguide structure has a parallel pair of optical waveguides extending from the first section to the second section with each of the optical waveguides including one of the optical cores.

公开(公告)号：EP4462174A1

公开(公告)日：2024-11-13

申请号：EP24168356.4

申请日：2024-04-04

申请人： Nokia Solutions and Networks Oy

发明人： AIMONE, Alessandro

IPC分类号： G02F1/03 ,  G02F1/21 ,  G02F1/225 ,  G02F1/035

摘要： An electro-optic modulator that is disposed along a surface of a substrate includes an optical waveguide having an optical waveguide core disposed along the surface, and two electrode stacks, each of the stacks extending along a corresponding side of a segment of the optical waveguide core to modulate light therein. Each stack includes two electrode segments vertically stacked over the surface of the substrate; wherein at least a part of the segment of the optical waveguide core along the surface is vertically located between the electrode segments of each electrode stack.