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公开(公告)号：US20220350078A1
公开(公告)日：2022-11-03
申请号：US17712909
申请日：2022-04-04
Applicant: Nokia Solutions and Networks OY
Inventor： Alessandro Aimone
Abstract: 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.
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公开(公告)号：US20240377695A1
公开(公告)日：2024-11-14
申请号：US18195128
申请日：2023-05-09
Applicant: Nokia Solutions and Networks Oy
Inventor： Alessandro Aimone , Philipp Thomas
Abstract: 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.
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公开(公告)号：US20240377665A1
公开(公告)日：2024-11-14
申请号：US18195138
申请日：2023-05-09
Applicant: Nokia Solutions and Networks Oy
Inventor： Alessandro Aimone
Abstract: 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.
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公开(公告)号：US11867945B2
公开(公告)日：2024-01-09
申请号：US17712909
申请日：2022-04-04
Applicant: Nokia Solutions and Networks OY
Inventor： Alessandro Aimone
CPC classification number: G02B6/12004 , G02B6/126 , G02B2006/12097 , G02B2006/12128
Abstract: 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.
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