公开(公告)号：US20240429866A1

公开(公告)日：2024-12-26

申请号：US18434726

申请日：2024-02-06

Applicant: Google LLC

Inventor： Joseph Cheney BARDIN

IPC: H03D7/00 ,  B82Y10/00 ,  G06F1/20 ,  G06N10/00 ,  H01F6/00 ,  H02M1/08 ,  H03D7/14 ,  H03K3/38 ,  H03K17/693 ,  H03K17/92 ,  H03K19/195 ,  H03M1/12 ,  H04B10/077 ,  H04B10/70

Abstract: A device for generating a qubit control signal includes: a first signal envelope generator circuit including a first multiple of signal sources, in which an output of each signal source of the first multiple of signal sources is combined to provide a first cumulative output; and a first mixer circuit coupled to the first signal envelope generator circuit, in which the first cumulative output is coupled to a first input of the first mixer circuit, and an output of the first mixer circuit includes a first qubit control signal.

公开(公告)号：US12176950B2

公开(公告)日：2024-12-24

申请号：US18389942

申请日：2023-12-20

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Seung-Hyun Cho ,  Joon Ki Lee

IPC: H04B10/07 ,  H04B10/077 ,  H04B10/2575

Abstract: A test device and method for testing a distributed feedback laser diode (DFB-LD) device for an optical transceiver of a radio over fiber (RoF) system examines the DFB-LD device based on an absolute limiting rating, an operating case environment, and a functional specification, in which the absolute limiting rating is a rating at which there is no fatal damage to the DFB-LD device during a short period of time when each limiting parameter is isolated and all other parameters are in a normal performance parameter, the operating case environment includes an operating temperature, and the functional specification includes parameters to be tested according to an operating condition for the functional specification.

公开(公告)号：US20240413900A1

公开(公告)日：2024-12-12

申请号：US18703060

申请日：2022-10-25

Applicant: CHINA MOBILE COMMUNICATION CO., LTD RESEARCH INSTITUTE ,  CHINA MOBILE COMMUNICATIONS GROUP CO., LTD.

Inventor： Dong Wang ,  Qian Cai ,  Jiang Sun ,  Dechao Zhang ,  Han Li

IPC: H04B10/077 ,  H04J14/02

Abstract: A method for fault location comprises at least one of: sending, by a second optical module, a configuration message, to a first optical module, receiving, by the second optical module, a response message from the first optical module, and performing fault location according to the response message for the configuration message, wherein the response message is a response message sent to the second optical module to confirm a loopback configuration is successful, after the first optical module receives the configuration message from the second optical module and the first optical module configures the loopback configuration; or sending a data stream to a first optical module after a second optical module receives a response message from the first optical module, receiving, by the second optical module, a data stream returned from the first optical module, and performing fault location according to the data stream returned, wherein the response message is a response message sent to the second optical module to confirm a loopback configuration is successful, after the first optical module receives the configuration message from the second optical module and the first optical module configures the loopback configuration. The second optical module is located in an active WDM device, and the first optical module is located in an AAU.

公开(公告)号：US20240405869A1

公开(公告)日：2024-12-05

申请号：US18674167

申请日：2024-05-24

Applicant: Fujitsu Limited

Inventor： Yusaku YAMAMOTO ,  Tomoaki WATANABE ,  Yukiko TSUBONO ,  Yoshito KACHITA

IPC: H04B10/079 ,  G08B21/18 ,  H04B10/077

Abstract: A Raman amplification device that Raman-amplifies an optical signal in a transmission line by Raman pumping, the Raman amplification device includes a processor configured to monitor a first signal communicated by the optical signal, set a threshold level of an alarm (WDMLOS) detection for determining whether the alarm is output at a time of transmission line disconnection in accordance with a monitoring result of the first signal, determine whether auto power shut down (APSD) control is performed by using a first APSD determination condition based on integration of optical supervisory channel (OSC) disconnection and the alarm, in a case where the monitoring result of the communicated first signal exceeds a predetermined condition, and determine whether the APSD control is performed by using a second APSD determination condition based on the OSC disconnection, in a case where the monitoring result of the communicated first signal is lower than the predetermined condition.

公开(公告)号：US12155412B1

公开(公告)日：2024-11-26

申请号：US17071634

申请日：2020-10-15

Applicant: Acacia Communications, Inc.

Inventor： Jonas Geyer

IPC: H04B17/00 ,  H04B10/077 ,  H04B10/2569 ,  H04B10/532

Abstract: A system, comprising an optical transmitter including a memory and one or more processors, wherein the one or more processors are in communication with the memory and configured to perform creating a first signal and a second signal, wherein the first signal and the second signal are each polarized; rotating a polarization of the first signal and the second signal by θ degrees; adding a differential group delay (DGD) to the second optical signal; generating a first optical signal from the first signal; and generating a second optical signal from the second signal.

公开(公告)号：US12119868B2

公开(公告)日：2024-10-15

申请号：US17972823

申请日：2022-10-25

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jianyu Zheng ,  Yu Tian ,  Shimin Gao

IPC: H04B10/077 ,  H04B10/032

CPC classification number: H04B10/0771 ,  H04B10/032

Abstract: This application discloses an optical network system, a management device, an optical transmission apparatus, and a communications device, and belongs to the field of optical network technologies. A first communications device in the optical network system is configured to send physical information of the first communications device to a second communications device, where the physical information includes first module information of a first optical transmission apparatus. The second communications device is configured to determine a working status of the optical network system based on the first module information, second module information of a second optical transmission apparatus, and link information of an optical fiber link.

公开(公告)号：US12088346B1

公开(公告)日：2024-09-10

申请号：US18216454

申请日：2023-06-29

Applicant: NoCell Technologies, LLC

Inventor： Donald McKeefery

IPC: H04B10/40 ,  H04B10/077 ,  H04B17/318 ,  H04M1/72463

CPC classification number: H04B10/40 ,  H04B10/0773 ,  H04B17/318 ,  H04M1/72463

Abstract: A computerized method is disclosed that includes operations of detecting movement of a first network device at a speed above a predetermined threshold and the presence of a transceiver, obtaining a network device identifier-RSSI value pairing from the transceiver that includes a listing of a pairing of a network device identifier for each of a plurality of network devices detected by the transceiver, and a RSSI value corresponding to a transmission received by the transceiver from each of the plurality of network devices. The method may further include an operation of implementing a set of policies on the first network device based on a result of a comparison between when RSSI value of the first network device and a predetermined RSSI threshold. The set of policies may be implemented on a plurality of network devices based on results of threshold comparisons using RSSI values of the plurality of network devices.

公开(公告)号：US20240236530A9

公开(公告)日：2024-07-11

申请号：US18484882

申请日：2023-10-11

Applicant: NEC Corporation

Inventor： Akira MASUDA

IPC: H04Q11/00 ,  H04B10/077 ,  H04B10/294 ,  H04B10/50

CPC classification number: H04Q11/0005 ,  H04B10/0773 ,  H04B10/294 ,  H04B10/506 ,  H04Q2011/0041

Abstract: Provided is a path switching device including a wavelength separator that wavelength-separates signal light and monitoring light having a wavelength different from a wavelength of the signal light, a signal light path switcher that switches a path of the signal light, and a monitoring light path controller that controls a path of the monitoring light, wherein the monitoring light path controller sets a path of the monitoring light to one path regardless of a switching state of a path of the signal light.

公开(公告)号：US20240235670A9

公开(公告)日：2024-07-11

申请号：US18379985

申请日：2023-10-13

Applicant: NEC Corporation

Inventor： Takehiro NAKANO

IPC: H04B10/077 ,  H04B10/079

CPC classification number: H04B10/0775 ,  H04B10/0793

Abstract: An optical transmission path monitoring device according to the present disclosure includes a monitoring light generation circuit configured to generate first monitoring light, and send the first monitoring light to an optical transmission path, a time synchronization circuit configured to perform time synchronization with an opposite monitoring device connected to an opposite side of the optical transmission path, a light reception circuit configured to receive first returned light acquired by turning back the first monitoring light in a turnback circuit inserted in the optical transmission path, and second returned light acquired by multiple turning back, in the turnback circuit, second monitoring light sent by the opposite monitoring device, and a time control circuit configured to control a sending time of the first monitoring light by use of positional information of the turnback circuit.

公开(公告)号：US12021610B2

公开(公告)日：2024-06-25

申请号：US16820371

申请日：2020-03-16

Applicant: II-VI Delaware, Inc.

Inventor： John DeAndrea

IPC: H04J14/02 ,  H04B10/077

CPC classification number: H04J14/0278 ,  H04B10/0773 ,  H04J14/0212 ,  H04J14/0267 ,  H04B2210/074

Abstract: An optical network element for a hardware configured optical network includes a first optical port that receives an input optical signal comprising receive control information from the hardware configured optical network. A demodulator optically coupled to the first optical port decodes the receive control information for configuring the optical network element. A modulator having an electrical modulation input that receives transmit control information imparts a modulation onto an optical carrier thereby generating a transmit optical control signal representing the transmit control information. A second optical port transmits the transmit optical control signal representing the transmit control information to the hardware configured optical network.