公开(公告)号：US20250088776A1

公开(公告)日：2025-03-13

申请号：US18463861

申请日：2023-09-08

Applicant: Nokia Solutions and Networks Oy

Inventor： Mijail Szczerban Gonzalez ,  John E. Simsarian ,  Roland Ryf ,  Colin Kelly

IPC: H04Q11/00

Abstract: Various example embodiments of optical nodes may be configured to support improved connectivity between optical fibers and/or cores of optical fibers connected to the optical nodes based on use of various optical cross-connect architectures within the optical nodes. Various example embodiments of optical nodes configured to support use of various optical cross-connect architectures within the optical nodes in order to provide improved connectivity within the optical nodes in a manner that supports improved connectivity between optical fibers and/or cores of optical fibers connected to the optical nodes may be configured to support optical cross-connect architectures that increase connectivity between middle stage switches of the optical nodes (e.g., use of an auxiliary optical switch to increase connectivity between middle stage switches, use of connections between middle stage switches to increase connectivity between middle stage switches, or the like, as well as various combinations thereof).

公开(公告)号：US10715256B1

公开(公告)日：2020-07-14

申请号：US16290854

申请日：2019-03-01

Applicant: Nokia Solutions and Networks Oy

Inventor： Haoshuo Chen ,  Roland Ryf ,  Nicolas Fontaine

IPC: H04B10/556 ,  H04B10/61

Abstract: An apparatus includes an optical data receiver to receive a phase-modulated optical signal and to demodulate data therefrom. The optical data receiver includes an optical power splitter, first and second optical intensity detectors, and a digital signal processor. The digital signal processor is connected to receive digital values of intensity measurements of each of the optical intensity detectors. The first optical intensity detector is connected to receive light from the optical power splitter via a first optical path, and the second optical intensity detector is connected to receive light from the optical power splitter via a second optical path. The first and second optical paths have channel functions with different frequency dependencies.

公开(公告)号：US20240007215A1

公开(公告)日：2024-01-04

申请号：US17965236

申请日：2022-10-13

Applicant: Nokia Solutions and Networks Oy

Inventor： John Simsarian ,  David Neilson ,  Roland Ryf

IPC: H04J14/02 ,  H04L49/1515

CPC classification number: H04J14/0209 ,  H04L49/1515

Abstract: Various example embodiments for supporting optical transport systems are presented. Various example embodiments for supporting optical transport systems may be configured to support optical transport systems that support multiple fibers based on use of spatial division multiplexing (SDM) techniques. Various example embodiments for supporting optical transport systems that support multiple fibers based on use of SDM techniques may be configured to support optical transport systems that support multiple fibers based on use of an anylane add/drop capability that is based on use of a Clos architecture (e.g., a spatially-switched distributed Clos architecture with a single stage of switching for network traffic that passes through the node, a spatially-switched distributed Clos architecture with two stages of switching for network traffic that passes through the node, a spatially-switched node-contained Clos architecture with three stages of switching for network traffic that passes through the node, or the like).

公开(公告)号：US12191913B2

公开(公告)日：2025-01-07

申请号：US17709975

申请日：2022-03-31

Applicant: Nokia Solutions and Networks Oy

Inventor： Patrick Iannone ,  Roland Ryf ,  Rene-Jean Essiambre

IPC: H04B10/548

Abstract: An apparatus includes an optical PSK transmitter configured to output carrier-suppressed optical signal phase-modulated according to a M-PSK constellation without substantial amplitude modulation. The apparatus includes an optical phase modulator, a driver configured to drive the modulator with a PAM-N electrical signal, N>M, and a signal encoder configured to map an input bit stream to the PAM-N electrical signal.

公开(公告)号：US20230318714A1

公开(公告)日：2023-10-05

申请号：US17709975

申请日：2022-03-31

Applicant: Nokia Solutions and Networks Oy

Inventor： Patrick Iannone ,  Roland Ryf ,  Rene-Jean Essiambre

IPC: H04B10/548

CPC classification number: H04B10/548

Abstract: An apparatus includes an optical PSK transmitter configured to output carrier-suppressed optical signal phase-modulated according to a M-PSK constellation without substantial amplitude modulation. The apparatus includes an optical phase modulator, a driver configured to drive the modulator with a PAM-N electrical signal, N>M, and a signal encoder configured to map an input bit stream to the PAM-N electrical signal.

公开(公告)号：US10601521B2

公开(公告)日：2020-03-24

申请号：US15979376

申请日：2018-05-14

Applicant: Nokia Solutions and Networks Oy

Inventor： Rene-Jean Essiambre ,  Roland Ryf ,  Muralidharan Kodialam

IPC: H04B10/516 ,  H04B10/61 ,  H04J14/06

Abstract: An optical data receiver includes optical hybrids, light detectors and a digital signal processor. Each optical hybrid outputs mixtures of a corresponding one of the polarization components of a received data-modulated optical carrier with reference light. Each light detector outputs digital measurements of the mixtures from a corresponding one of the optical hybrids. The digital signal processor identifies data symbols of a constellation having parts transmitted on both polarization components of the data-modulated optical carrier responsive to receipt of the digital measurements. The transmitted data-modulated optical carrier has about a same total light intensity in each modulation time slot thereof. Each data symbol is defined by in-phase and quadrature-phase electric field coordinates of both polarization components. Pairs of in-phase and quadrature-phase electric coordinates of each of the polarization components are on a preselected set of one or more concentric circles about an origin. The constellation has 4D dimensions, D being an integer.

公开(公告)号：US20240369774A1

公开(公告)日：2024-11-07

申请号：US18143566

申请日：2023-05-04

Applicant: Nokia Solutions and Networks Oy

Inventor： Mijail Szczerban ,  Roland Ryf ,  John E Simsarian

IPC: G02B6/35

Abstract: A method and apparatus for optical cross-connection are provided for reflectively coupling at least a first intermodular optical signal from at least one input optical fiber port of a source OCS module to an output optical port of a destination OCS module. The coupling involves steering the intermodular optical signal to an intermediate optical reflector of the source OCS module, using the intermediate optical reflector to steer the optical signal out of the source OCS module to the destination OCS module, and within the destination OCS module, steering the optical signal onto an output optical fiber port.