公开(公告)号：US20210314681A1

公开(公告)日：2021-10-07

申请号：US17221820

申请日：2021-04-04

Applicant: NEC LABORATORIES AMERICA, INC

Inventor： Ming-Fang HUANG ,  Ting WANG

IPC: H04Q11/00

Abstract: Aspects of the present disclosure describe distributed fiber optic sensing (DFOS) systems, methods, and structures that advantageously utilize existing telecommunications facilities that serve as not only to convey telecommunications traffic—but as a sensor medium providing useful sensory information. In sharp contrast to the prior art—a DFOS system when so deployed may advantageously exploit network topologies and optical switches to provide novel sensing features including the detection of environmental events including acoustic, temperature, and vibrational events that may be indicative of societal activity including traffic and/or emergency events.

公开(公告)号：US20210311186A1

公开(公告)日：2021-10-07

申请号：US17195538

申请日：2021-03-08

Applicant: NEC Laboratories America, Inc.

Inventor： Ming-Fang HUANG ,  Ting WANG ,  Hansi LIU

IPC: G01S15/42 ,  G01V1/18 ,  G01V1/30 ,  G01D5/353

Abstract: Aspects of the present disclosure describe distributed fiber optic sensing systems, methods, and structures that advantageously are employed to determine the location and depth of underground fiber-optic facilities that may be carrying telecommunications traffic.

公开(公告)号：US20210258074A1

公开(公告)日：2021-08-19

申请号：US17147379

申请日：2021-01-12

Applicant: NEC Laboratories America, Inc.

Inventor： Ming-Fang HUANG ,  Ting WANG

IPC: H04B10/25 ,  H04W84/18 ,  H04W4/02 ,  H04W4/90 ,  H04L29/08

Abstract: Aspects of the present disclosure describe systems, methods and structures providing detection and localization of disaster-related indoor events via hybrid ethernet/optical fiber cable.

公开(公告)号：US20210180997A1

公开(公告)日：2021-06-17

申请号：US17118529

申请日：2020-12-10

Applicant: NEC Laboratories America, Inc.

Inventor： Ming-Fang HUANG ,  Hansi LIU ,  Ting WANG

IPC: G01D5/353 ,  G01H9/00

Abstract: Aspects of the present disclosure describe systems, methods and structures providing non-destructive localization of underground optical fiber cables utilizing distributed fiber optic sensing (DFOS) and time difference of arrival techniques.

公开(公告)号：US20200370970A1

公开(公告)日：2020-11-26

申请号：US16878063

申请日：2020-05-19

Applicant: NEC Laboratories America, Inc.

Inventor： Ming-Fang HUANG ,  Yaowen LI

IPC: G01K11/32 ,  G01K13/00 ,  G01M11/00

Abstract: Aspects of the present disclosure describe monitoring of optical fiber by distributed temperature sensing (DTS) and determining optical fiber degradation and/or abnormal environmental events including landslides, fires, etc., from DTS data.