公开(公告)号：US20250150174A1

公开(公告)日：2025-05-08

申请号：US18837492

申请日：2022-02-14

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Manabu YOSHINO

IPC: H04B10/532 ,  H04J14/06

Abstract: The control signal multiplexing device includes a modulation unit that performs polarization modulation of an optical signal for carrying a main signal with a control signal.

公开(公告)号：US20230396902A1

公开(公告)日：2023-12-07

申请号：US18033544

申请日：2020-10-30

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Manabu YOSHINO

IPC: H04Q11/00 ,  H04B10/27

CPC classification number: H04Q11/0005 ,  H04B10/27 ,  H04Q2011/0037

Abstract: An optical communication device includes an optical switch that outputs an optical signal input from one of a plurality of transmission lines to another transmission line among the plurality of transmission lines, a communication unit that communicates with a subscriber device without using the optical switch, a wavelength controller that sets a wavelength to be used for communication of an optical signal by communicating with the subscriber device via the communication unit, and an optical switch controller that controls the optical switch such that an optical signal transmitted from the subscriber device is input from a port to which the subscriber device is connected and output to another port connected to a transmission line corresponding to a transfer destination on a path to a communication destination.

公开(公告)号：US20220292043A1

公开(公告)日：2022-09-15

申请号：US17631966

申请日：2019-08-08

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Manabu YOSHINO

IPC: G06F13/40 ,  G06F9/445

Abstract: There is provided a setting device including a setting unit configured to, based on setting content input/output to/from some interfaces among a plurality of interfaces, when the setting content includes setting content related to other interfaces, perform setting for the other interfaces.

公开(公告)号：US20220182466A1

公开(公告)日：2022-06-09

申请号：US17631198

申请日：2019-08-02

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Tomoya HATANO ,  Manabu YOSHINO

IPC: H04L67/00 ,  H04L12/44

Abstract: A communication device in a communication system in which functions that are converted to software are configured as a plurality of components, and the functions are realized as a result of the components being respectively executed by a plurality of communication devices that are connected to a network, the communication device including a sorting unit configured to acquire a signal that is transmitted by a first component and transmit the signal to a second component indicated by destination information that is added to the signal by the first component.

公开(公告)号：US20240369904A1

公开(公告)日：2024-11-07

申请号：US18291733

申请日：2021-07-26

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Manabu YOSHINO

IPC: G02F1/35

Abstract: The wavelength adapter includes a first conversion unit, a first filter, a second conversion unit, and a second filter. The first conversion unit converts, by a first pump light, a first signal light into a second signal light having a wavelength not included in a target wavelength band while maintaining a phase relationship of the first signal light. The first filter blocks the first signal light and the first pump light, and allows for transmission of the second signal light. The second conversion unit converts, by a second pump light, the second signal light after transmission through the first filter into a third signal light having a wavelength in the target wavelength band while maintaining a phase relationship of the second signal light. The second filter blocks the second signal light and the second pump light, and allows for transmission of the third signal light.

公开(公告)号：US20230396335A1

公开(公告)日：2023-12-07

申请号：US18034012

申请日：2020-10-30

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Manabu YOSHINO

IPC: H04B10/27 ,  H04B10/50

CPC classification number: H04B10/27 ,  H04B10/5059

Abstract: A subscriber device in an optical communication system including a subscriber device, a user device connected to the subscriber device, an optical switch that relays an optical signal transmitted from the subscriber device to a destination device, a wavelength control unit that allocates a wavelength to the subscriber device, and an optical switch control unit that controls the optical switch such that the optical signal transmitted from the subscriber device is output to another port connected to a transmission line corresponding to a transfer destination on a path to the destination device. The subscriber device includes a wavelength monitoring unit that monitors a wavelength of the optical signal transmitted from the user device and a transceiver that transmits and receives the optical signal to and from another device. The wavelength monitoring unit instructs the user device to use an appropriate wavelength when the wavelength of the optical signal transmitted from the user device is different from the wavelength allocated by the wavelength control unit. When the wavelength of the optical signal transmitted from the user device is identical to the wavelength allocated by the wavelength control unit, the subscriber device transmits the optical signal through the optical switch.

公开(公告)号：US20230224260A1

公开(公告)日：2023-07-13

申请号：US18018716

申请日：2020-07-31

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Manabu YOSHINO

IPC: H04L49/1515 ,  H04L49/253 ,  H04L49/00

CPC classification number: H04L49/1515 ,  H04L49/253 ,  H04L49/70

Abstract: An aspect of the present invention provides an input/output switch including: a plurality of virtual switches formed by asymmetrically divided switches with symmetrically aligned ports; and ports on a side of end points and ports on a side of an intermediate switch allocated for each of the virtual switches, in which some of the ports of the virtual switches on the side of the end points act as ports that form a path that returns traffic among the virtual switches.

公开(公告)号：US20230224065A1

公开(公告)日：2023-07-13

申请号：US18018722

申请日：2020-08-03

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Manabu YOSHINO

IPC: H04J14/02

CPC classification number: H04J14/0224 ,  H04J14/0261

Abstract: An optical transmission system including a plurality of optical transmission devices and an optical reception device and performing communication by wavelength division multiplexing, in which the plurality of optical transmission devices each includes a transmission unit that encodes transmission data on a basis of an allocated code and output the transmission data to an optical transmission line at an allocated wavelength, and different codes are allocated to the plurality of optical transmission devices to which different wavelengths are allocated, and the optical reception device includes one or a plurality of decoding units that decodes the transmission data transmitted from the plurality of optical transmission devices on the basis of an optical signal for each wavelength transmitted via the optical transmission line by wavelength multiplexing division and the allocated code.

公开(公告)号：US20240015422A1

公开(公告)日：2024-01-11

申请号：US18033983

申请日：2020-10-30

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Manabu YOSHINO

IPC: H04Q11/00 ,  H04B10/27

CPC classification number: H04Q11/0062 ,  H04B10/27

Abstract: An optical communication device includes: an optical switch configured to output an optical signal input from one transmission line to another transmission line among a plurality of transmission lines; and a control unit configured to control the optical switch such that a wavelength in accordance with a subscriber device and a transmission destination on a path of a communication destination is allocated to the subscriber device by using a control signal inserted or written by the control unit or a monitoring unit, and the input optical signal is output to the another transmission line corresponding to the communication destination. The subscriber device divides a main signal of the input optical signal into at least first and second partial main signals, inserts the control signal between the first and second partial main signals, inserts a time region for inserting the control signal in the control unit or the monitoring unit in a middle of a path, or inserts a writable signal region for overwriting using the control signal for transmission, deletes the control signal, the time region for inserting the control signal, or the writable signal region for overwriting using the control signal from a received signal, and combines the divided main signals to output the main signal.

公开(公告)号：US20230030158A1

公开(公告)日：2023-02-02

申请号：US17788537

申请日：2020-09-29

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Takuya KANAI ,  Hiroo SUZUKI ,  Junichi KANI ,  Shin KANEKO ,  Kazuaki HONDA ,  Manabu YOSHINO ,  Tomoaki YOSHIDA

IPC: H04B10/291 ,  H04B10/27

Abstract: An optical communication apparatus includes an optical switch, a wavelength management control unit, and an optical switch control unit. The optical switch is connected to a plurality of transmission lines and outputs an optical signal input from one of the transmission lines to another of the transmission lines. The wavelength management control unit assigns a wavelength to a subscriber terminal according to a communication destination. The optical switch control unit controls the optical switch such that it outputs an optical signal transmitted from the subscriber terminal, to which a wavelength has been assigned, to a transmission line corresponding to its forwarding destination on a path to the communication destination.