公开(公告)号：US12231832B2

公开(公告)日：2025-02-18

申请号：US17822306

申请日：2022-08-25

Applicant: II-VI Delaware, Inc.

Inventor： Alan A. Fennema ,  Haijun Yuan ,  Wilfredo C. Nanita ,  Oswald Correya ,  Jack R Kelly ,  Thomas J. Schwartz

IPC: H04Q11/00 ,  G02B5/32

Abstract: Advanced hologram techniques pre-calculate holograms to be displayed on an LCoS switch panel of a wavelength selective switch (WSS) module. The holograms are generated offline and are then stored on the WSS module for later retrieval. Each of the holograms is associated with a defined parameter, such as an attenuation level, and each of the holograms is configured to create a reconfigurable phase grating profile or pattern of the pixels of the LCoS switch panel. Each phase pattern selectively directs desired diffraction orders of optical channels from the LCoS switch panel for output to selected ports and selectively directs undesired diffraction orders away from the ports and at a desired attenuation level. During operation, the WSS module can retrieve the stored holograms. Interpolation can determine intermediate holograms between parameter values, and a ramp function can be added to the pattern to account for steering adjustments.

公开(公告)号：US20250055564A1

公开(公告)日：2025-02-13

申请号：US18928318

申请日：2024-10-28

Applicant: Ciena Corporation

Inventor： Alex W. MacKay ,  Andrew D. Shiner ,  Yinqing Pei ,  David W. Boertjes ,  Fangyuan Zhang

IPC: H04B10/079 ,  H04Q11/00

Abstract: Systems and methods for in-service measurement of nonlinear interference on a per span basis in an optical network having a plurality of spans include steps of varying power in a span of the plurality of spans to cause small power perturbations which do not impact traffic carrying signals; observing a change in noise at an optical receiver at an end of the plurality of spans with the change due to the varying the power in the span; and determining the nonlinear interference for the span based on the change in the noise.

公开(公告)号：US12199744B2

公开(公告)日：2025-01-14

申请号：US18055148

申请日：2022-11-14

Applicant: MAXLINEAR, INC.

Inventor： Gert Schedelbeck ,  Thomas Heuken ,  Franz Josef Schäfer ,  Rainer Strobel

IPC: H04J14/00 ,  H04J14/02 ,  H04Q11/00

Abstract: A method includes obtaining information about a next upstream burst transmission. The method also includes determining a set of settings based on the information. The method includes adjusting a physical medium dependent (PMD) module based on the set of settings prior to receiving the next upstream burst transmission.

公开(公告)号：US12199673B2

公开(公告)日：2025-01-14

申请号：US17521653

申请日：2021-11-08

Applicant: ARRIS Enterprises LLC

Inventor： Zoran Maricevic ,  John Ulm ,  John Caezza ,  Stuart Eastman

IPC: H04B10/2575 ,  H04B10/40 ,  H04N7/22 ,  H04Q11/00

Abstract: A CATV system having an aggregator node and at least one compact node. The aggregator node receives downstream signals from a head end and sends upstream signals to the head end. The at least one compact node receives downstream signals from the aggregator node and send upstream signals to the aggregator node. The at least one compact node sends the downstream signal received from the aggregator node to a subscriber positioned in the upstream direction relative to the compact node.

公开(公告)号：US20250016587A1

公开(公告)日：2025-01-09

申请号：US18828317

申请日：2024-09-09

Applicant: Level 3 Communications, LLC

Inventor： William Gray ,  James Sayre ,  Stephen Limburg

IPC: H04W24/06 ,  G06N3/02 ,  G06N20/00 ,  G06Q10/04 ,  H04B10/27 ,  H04L12/28 ,  H04L41/0893 ,  H04L41/12 ,  H04L41/14 ,  H04L41/16 ,  H04Q3/00 ,  H04Q11/00 ,  H04W16/18 ,  H04W24/02 ,  H04W64/00

Abstract: Implementations described and claimed herein provide systems and methods for intelligent node type selection in a telecommunications network. In one implementation, a customer set is obtained for a communications node in the telecommunications network. The customer set includes an existing customer set and a new customer set. A set of customer events is generated for a node type of the communications node using a simulator. The set of customer events is generated by simulating the customer set over time through a discrete event simulation. An impact of the customer events is modeled for the node type of the communications node. The node type is identified from a plurality of node types for a telecommunications build based on the impact of the customer events for the node type.

公开(公告)号：US20250016481A1

公开(公告)日：2025-01-09

申请号：US18710996

申请日：2021-11-25

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Naotaka SHIBATA ,  Shin KANEKO ,  Takuya KANAI

IPC: H04Q11/00 ,  H04B10/27

Abstract: An optical communication system including an optical switch that is connected to a plurality of optical transmission lines and outputs an optical signal input from any of the optical transmission lines to another optical transmission line, and a transfer unit configured to convert simplex transmission into duplex transmission or converts duplex transmission into simplex transmission between a subscriber device and the optical switch or between a first port of the optical switch to which the subscriber device is directly or indirectly connected and a second port opposite to the first port, and transfers the optical signal so as not to cause interference between uplink and downlink.

公开(公告)号：US20250008247A1

公开(公告)日：2025-01-02

申请号：US18752864

申请日：2024-06-25

Applicant: NEC Corporation

Inventor： Andre ARASHIRO

IPC: H04Q11/00

Abstract: In a branching apparatus according to the present disclosure, a first input port of the first optical switch connects to a first transmission line A1 connected to a first terminal station A. A second input port connects to a first transmission line C1 connected to a third terminal station C. A first output port connects to a first input port of the second optical switch. A second output port connects to a first transmission line B1 connected to a second terminal station B. A second input port of the second optical switch connects to a second transmission line B2 connected to the second terminal station B. The first output port connects to a second transmission line A2 connected to the first terminal station A. The second output port connects to a second transmission line C2 connected to the third terminal station C.

公开(公告)号：US12185037B2

公开(公告)日：2024-12-31

申请号：US18104539

申请日：2023-02-01

Applicant: Panduit Corp.

Inventor： Richard J. Pimpinella ,  Jose M. Castro

IPC: H04B10/00 ,  H04Q11/00 ,  H04J14/00

Abstract: An optical interconnection assembly for a Spine-and-Leaf network is disclosed. The optical interconnection assembly has Spine multi-fiber optical connectors and Leaf multi-fiber optical connectors. The Spine optical connectors of the interconnection assembly are optically connected to multi-fiber connectors of Spine switches via Spine patch cords. The leaf multi-fiber connectors are optically connected to Leaf multi-fiber connectors of Leaf switches via Leaf patch cords. An array of simplex fiber optic cables in said interconnection assembly serve to optically connect every Spine multi-fiber connector to every Leaf multi-fiber connector so that every Spine switch is optically connected to every Leaf switch. The optical interconnection assembly facilitates network Spine-and-Leaf interconnections and the ability to scale-out the network by installing additional assemblies, Leaf switches, and Spine switches.

公开(公告)号：US12185035B2

公开(公告)日：2024-12-31

申请号：US18501416

申请日：2023-11-03

Applicant: SUBCOM, LLC

Inventor： Yunlu Xu ,  Richard Kram ,  Yuriy Tsaltskan ,  Lara Denise Garrett ,  Stacy Test

IPC: H04Q11/00 ,  H04B10/038 ,  H04B10/079 ,  H04L41/069 ,  H04L41/12

Abstract: Provided are techniques, devices and systems that enable updating of a reportable parameter table database when a reconfigured optical communication path is formed by switching performed by a branching unit in an undersea optical communication transmission system. A processor may obtain system attributes of each respective segment of a number of segments of the reconfigured optical communication path from a first end point to a second endpoint. The system attributes of each respective segment of the number of segments may be evaluated from the first end point to the second endpoint of the reconfigured optical communication path. A reportable parameter table may be generated based on the evaluated system attributes that includes a listing of operational and structural parameters of system from the first endpoint to the second endpoint of the reconfigured optical communication path.

公开(公告)号：US12170862B2

公开(公告)日：2024-12-17

申请号：US18323352

申请日：2023-05-24

Applicant: XIAMEN EOCHIP SEMICONDUCTOR CO., LTD

Inventor： Jinghu Li ,  An Lin ,  Zhang Fan

IPC: H04B10/038 ,  H04B10/079 ,  H04Q11/00

Abstract: A 10 G rate OLT terminal transceiver integrated chip based on XGPON and DFB laser includes: a burst mode receiver RX, a continuous mode transmitter TX and a digital control unit DIGIITAL. The burst mode receiver RX amplifies an optical signal from each ONU client into an electrical signal through a burst TIA, processes double-detection for amplitude and frequency of the electrical signal, outputs the signal whose amplitude and waveform pulse width meet the threshold requirements to the host, and uses a fast recovery module to control the timing to meet the XGPON protocol. The continuous mode transmitter TX receives the electrical signal attenuated by the PCB, and selects the bypass BYPASS path or the clock data recovery CDR path according to the degree of attenuation. The digital control unit DIGIITAL is used to provide control signals for the burst mode receiver RX and the continuous mode transmitter TX.