公开(公告)号：US11044015B2

公开(公告)日：2021-06-22

申请号：US16358192

申请日：2019-03-19

Applicant: Google LLC

Inventor： Rene Schmogrow ,  Ralph Hofmeister ,  Vijayanand Vusirikala ,  Valey Kamalov ,  Mattia Cantono

IPC: H04B10/291 ,  H04B10/80 ,  G02B6/30 ,  G02B6/44

Abstract: Systems and methods of undersea optical communication are provided. An undersea optical amplifier assembly can include a water-tight housing and a photonic integrated circuit disposed within the housing. The photonic integrated circuit includes a plurality of optical fiber inputs, each configured to receive an end of a respective optical fiber of a first fiber optic cable bundle, and a plurality of optical fiber outputs. Each optical fiber output corresponds to a respective optical fiber input to form a fiber optic input-output pair, and is configured to receive an end of a respective optical fiber of a second fiber optic cable bundle. The photonic integrated circuit includes an optical amplifier optically coupled to each respective fiber optic input-output pair. The housing includes a first water-tight access port configured to receive the first fiber optic cable bundle, and a second water-tight access port configured to receive a second fiber optic cable bundle.

公开(公告)号：US12250501B2

公开(公告)日：2025-03-11

申请号：US17494963

申请日：2021-10-06

Applicant: Google LLC

Inventor： Rene Marcel Schmogrow ,  Mattia Cantono ,  Massimiliano Salsi

IPC: H04Q11/00 ,  H04J14/02

Abstract: An optical transport network (OTN) node including a plurality of optical circuit switches (OCSs), each OCS being a respective degree of the OTN node, at least two of the OCSs including an input port configured to be connected to a respective optical transport fiber outside of the OTN node, at least one first output port connected to a first switching layer, and at least one second output port connected to a second switching layer. The first and second switching layers have different levels of granularity, such as but not limited to a wavelength switched layer, a band switched layer or a fiber switched layer.

公开(公告)号：US20220291404A1

公开(公告)日：2022-09-15

申请号：US17752969

申请日：2022-05-25

Applicant: Google LLC

Inventor： Valey Kamalov ,  Mattia Cantono ,  Vijayanand Vusirikala ,  Massimiliano Salsi ,  Matthew Eldred Newland

IPC: G01V1/00 ,  G01H9/00 ,  G01V1/28 ,  G01V1/30

Abstract: Systems and methods are provided for generating a model for detection of seismic events. In this regard, one or more processors may receive from one or more stations located along an underwater optical route, one or more time series of polarization states of a detected light signal during a time period. The one or more processors may transform the one or more time series of polarization states into one or more spectrums in a frequency domain. Seismic activity data for the time period may be received by the one or more processors, where the seismic activity data include one or more seismic events detected in a region at least partially overlapping the underwater optical route. The one or more processors then generate a model for detecting seismic events based on the one or more spectrums and the seismic activity data.

公开(公告)号：US20200162163A1

公开(公告)日：2020-05-21

申请号：US16358192

申请日：2019-03-19

Applicant: Google LLC

Inventor： Rene Schmogrow ,  Ralph Hofmeister ,  Vijayanand Vusirikala ,  Valey Kamalov ,  Mattia Cantono

IPC: H04B10/291 ,  G02B6/44 ,  G02B6/30 ,  H04B10/80

Abstract: Systems and methods of undersea optical communication are provided. An undersea optical amplifier assembly can include a water-tight housing and a photonic integrated circuit disposed within the housing. The photonic integrated circuit includes a plurality of optical fiber inputs, each configured to receive an end of a respective optical fiber of a first fiber optic cable bundle, and a plurality of optical fiber outputs. Each optical fiber output corresponds to a respective optical fiber input to form a fiber optic input-output pair, and is configured to receive an end of a respective optical fiber of a second fiber optic cable bundle. The photonic integrated circuit includes an optical amplifier optically coupled to each respective fiber optic input-output pair. The housing includes a first water-tight access port configured to receive the first fiber optic cable bundle, and a second water-tight access port configured to receive a second fiber optic cable bundle.

公开(公告)号：US11693137B2

公开(公告)日：2023-07-04

申请号：US17752969

申请日：2022-05-25

Applicant: Google LLC

Inventor： Valey Kamalov ,  Mattia Cantono ,  Vijayanand Vusirikala ,  Massimiliano Salsi ,  Matthew Eldred Newland

IPC: G01V1/00 ,  G01H9/00 ,  G01V1/28 ,  G01V1/30

CPC classification number: G01V1/008 ,  G01H9/004 ,  G01V1/282 ,  G01V1/307

Abstract: Systems and methods are provided for generating a model for detection of seismic events. In this regard, one or more processors may receive from one or more stations located along an underwater optical route, one or more time series of polarization states of a detected light signal during a time period. The one or more processors may transform the one or more time series of polarization states into one or more spectrums in a frequency domain. Seismic activity data for the time period may be received by the one or more processors, where the seismic activity data include one or more seismic events detected in a region at least partially overlapping the underwater optical route. The one or more processors then generate a model for detecting seismic events based on the one or more spectrums and the seismic activity data.

公开(公告)号：US20220343176A1

公开(公告)日：2022-10-27

申请号：US17236678

申请日：2021-04-21

Applicant: Google LLC

Inventor： Rene Marcel Schmogrow ,  Mattia Cantono

IPC: G06N3/10 ,  G06N20/00 ,  G06F30/18

Abstract: Margin hedging in optical communication systems allows for overhead within the optical system. A machine learning model can be trained using the output of a physics based simulation of the optical system as well as the features of the optical system. A trained machine learning model can adjust the results of a physics based simulation of an optical network to more accurately match the adjusted simulation results to the “true” performance of the optical network. The margins of the optical communication system can be more tailored to the true performance of a designed or planned optical system.

公开(公告)号：US20230324573A1

公开(公告)日：2023-10-12

申请号：US18208498

申请日：2023-06-12

Applicant: Google LLC

Inventor： Valey Kamalov ,  Mattia Cantono ,  Vijayanand Vusirikala ,  Massimiliano Salsi ,  Matthew Eldred Newland

IPC: G01V1/00 ,  G01H9/00 ,  G01V1/28 ,  G01V1/30

CPC classification number: G01V1/008 ,  G01H9/004 ,  G01V1/282 ,  G01V1/307

Abstract: Systems and methods are provided for generating a model for detection of seismic events. In this regard, one or more processors may receive from one or more stations located along an underwater optical route, one or more time series of polarization states of a detected light signal during a time period. The one or more processors may transform the one or more time series of polarization states into one or more spectrums in a frequency domain. Seismic activity data for the time period may be received by the one or more processors, where the seismic activity data include one or more seismic events detected in a region at least partially overlapping the underwater optical route. The one or more processors then generate a model for detecting seismic events based on the one or more spectrums and the seismic activity data.

公开(公告)号：US11385365B2

公开(公告)日：2022-07-12

申请号：US16794373

申请日：2020-02-19

Applicant: Google LLC

Inventor： Valey Kamalov ,  Mattia Cantono ,  Vijayanand Vusirikala ,  Massimiliano Salsi ,  Matthew Eldred Newland

IPC: G01V1/00 ,  G01H9/00 ,  G01V1/28 ,  G01V1/30

Abstract: Systems and methods are provided for generating a model for detection of seismic events. In this regard, one or more processors may receive from one or more stations located along an underwater optical route, one or more time series of polarization states of a detected light signal during a time period. The one or more processors may transform the one or more time series of polarization states into one or more spectrums in a frequency domain. Seismic activity data for the time period may be received by the one or more processors, where the seismic activity data include one or more seismic events detected in a region at least partially overlapping the underwater optical route. The one or more processors then generate a model for detecting seismic events based on the one or more spectrums and the seismic activity data.

公开(公告)号：US20220116692A1

公开(公告)日：2022-04-14

申请号：US17066850

申请日：2020-10-09

Applicant: Google LLC

Inventor： Rene Schmogrow ,  Massimiliano Salsi ,  Matthew Eldred Newland ,  Mattia Cantono

IPC: H04Q11/00 ,  H04J14/02 ,  G02B6/35

Abstract: The present disclosure describes a network including two levels of switching: a first level including wavelength selective switching via a first type of switching module, and a second level including fiber level switching via a second type of switching module. The two levels of switching allow for maintaining wavelength selective switching between transmission directions while introducing fiber selective switching between network degrees of the same transmission direction. The first type of switching module is configured to transmit and receive optical signals having a first set of wavelengths at a first network degree at a first direction in a node of a network. The second type of switching module is configured to transmit and receive the optical signals from the first type of switching module and route the optical signals at the first network degree to a second network degree in a second direction.

公开(公告)号：US20210167850A1

公开(公告)日：2021-06-03

申请号：US16701935

申请日：2019-12-03

Applicant: Google LLC

Inventor： Rene Schmogrow ,  Mattia Cantono ,  Matthew Eldred Newland ,  Jia Shern Ngai ,  Kevin Croussore

IPC: H04B10/077 ,  H04B10/071 ,  H04B10/25 ,  H04B1/59 ,  H04L7/00

Abstract: A system is provided along a route of a network including a first transponder at a first node and a second transponder at a second node. The system further includes one or more processors configured to detect, in a first waveform measured at the first transponder, a first signature at a first time point, and configured to detect, in a second waveform measured at the second transponder, a second signature at a second time point. The one or more processors may correlate the first waveform and the second waveform, and determine, based on the correlation, that the first signature and the second signature correspond to a same event occurring along the route of the network. Based on comparing the first time point and the second time point, the one or more processors may determine an estimated location of the event.