公开(公告)号：US11609086B2

公开(公告)日：2023-03-21

申请号：US17521052

申请日：2021-11-08

Applicant: Hifi Engineering Inc.

Inventor： Brian H. Moore ,  Walter Jeffrey Shakespeare ,  Phillip William Wallace ,  Viet Hoang ,  Chris Henrikson ,  Ajay Sandhu ,  Adrian Dumitru ,  Thomas Clement ,  Dongliang Huang ,  Seyed Ehsan Jalilian

IPC: G01B11/16 ,  G01D5/353 ,  G01H9/00 ,  G01K11/3206 ,  G01L1/24

Abstract: There is described a method for interrogating optical fiber comprising fiber Bragg gratings (“FBGs”), using an optical fiber interrogator. The method comprises (a) generating an initial light pulse from phase coherent light emitted from a light source, wherein the initial light pulse is generated by modulating the intensity of the light; (b) splitting the initial light pulse into a pair of light pulses; (c) causing one of the light pulses to be delayed relative to the other of the light pulses; (d) transmitting the light pulses along the optical fiber; (e) receiving reflections of the light pulses off the FBGs; and (f) determining whether an optical path length between the FBGs has changed from an interference pattern resulting from the reflections of the light pulses.

公开(公告)号：US20220057193A1

公开(公告)日：2022-02-24

申请号：US17521052

申请日：2021-11-08

Applicant: Hifi Engineering Inc.

Inventor： Brian H. Moore ,  Walter Jeffrey Shakespeare ,  Phillip William Wallace ,  Viet Hoang ,  Chris Henrikson ,  Ajay Sandhu ,  Adrian Dumitru ,  Thomas Clement ,  Dongliang Huang ,  Seyed Ehsan Jalilian

IPC: G01B11/16 ,  G01D5/353 ,  G01H9/00 ,  G01K11/3206 ,  G01L1/24

Abstract: There is described a method for interrogating optical fiber comprising fiber Bragg gratings (“FBGs”), using an optical fiber interrogator. The method comprises (a) generating an initial light pulse from phase coherent light emitted from a light source, wherein the initial light pulse is generated by modulating the intensity of the light; (b) splitting the initial light pulse into a pair of light pulses; (c) causing one of the light pulses to be delayed relative to the other of the light pulses; (d) transmitting the light pulses along the optical fiber; (e) receiving reflections of the light pulses off the FBGs; and (f) determining whether an optical path length between the FBGs has changed from an interference pattern resulting from the reflections of the light pulses.

公开(公告)号：US11976915B2

公开(公告)日：2024-05-07

申请号：US18073211

申请日：2022-12-01

Applicant: Hifi Engineering Inc.

Inventor： Brian H. Moore ,  Walter Jeffrey Shakespeare ,  Phillip William Wallace ,  Viet Hoang ,  Chris Henrikson ,  Ajay Sandhu ,  Adrian Dumitru ,  Thomas Clement ,  Dongliang Huang ,  Seyed Ehsan Jalilian

IPC: G01B11/16 ,  G01D5/353 ,  G01H9/00 ,  G01K11/3206 ,  G01L1/24

CPC classification number: G01B11/161 ,  G01B11/18 ,  G01D5/35316 ,  G01D5/35383 ,  G01H9/004 ,  G01K11/3206 ,  G01L1/246

Abstract: There is described a method for interrogating optical fiber comprising fiber Bragg gratings (“FBGs”), using an optical fiber interrogator. The method comprises (a) generating an initial light pulse from phase coherent light emitted from a light source, wherein the initial light pulse is generated by modulating the intensity of the light; (b) splitting the initial light pulse into a pair of light pulses; (c) causing one of the light pulses to be delayed relative to the other of the light pulses; (d) transmitting the light pulses along the optical fiber; (e) receiving reflections of the light pulses off the FBGs; and (f) determining whether an optical path length between the FBGs has changed from an interference pattern resulting from the reflections of the light pulses.

公开(公告)号：US11199393B2

公开(公告)日：2021-12-14

申请号：US15868766

申请日：2018-01-11

Applicant: Hifi Engineering Inc.

Inventor： Brian H. Moore ,  Walter Jeffrey Shakespeare ,  Phillip William Wallace ,  Viet Hoang ,  Chris Henrikson ,  Ajay Sandhu ,  Adrian Dumitru ,  Thomas Clement ,  Dongliang Huang ,  Seyed Ehsan Jalilian

IPC: G01B11/16 ,  G01D5/353 ,  G01H9/00 ,  G01K11/3206 ,  G01L1/24

Abstract: There is described a method for interrogating optical fiber comprising fiber Bragg gratings (“FBGs”), using an optical fiber interrogator. The method comprises (a) generating an initial light pulse from phase coherent light emitted from a light source, wherein the initial light pulse is generated by modulating the intensity of the light; (b) splitting the initial light pulse into a pair of light pulses; (c) causing one of the light pulses to be delayed relative to the other of the light pulses; (d) transmitting the light pulses along the optical fiber; (e) receiving reflections of the light pulses off the FBGs; and (f) determining whether an optical path length between the FBGs has changed from an interference pattern resulting from the reflections of the light pulses.

公开(公告)号：US20180356210A1

公开(公告)日：2018-12-13

申请号：US15868766

申请日：2018-01-11

Applicant: Hifi Engineering Inc.

Inventor： Brian H. Moore ,  Walter Jeffrey Shakespeare ,  Phillip William Wallace ,  Viet Hoang ,  Chris Henrikson ,  Ajay Sandhu ,  Adrian Dumitru ,  Thomas Clement ,  Dongliang Huang ,  Seyed Ehsan Jalilian

IPC: G01B11/16 ,  G01D5/353 ,  G01K11/32 ,  G01H9/00 ,  G01L1/24

CPC classification number: G01B11/161 ,  G01D5/35316 ,  G01D5/35383 ,  G01H9/004 ,  G01K11/3206 ,  G01L1/246

Abstract: There is described a method for interrogating optical fiber comprising fiber Bragg gratings (“FBGs”), using an optical fiber interrogator. The method comprises (a) generating an initial light pulse from phase coherent light emitted from a light source, wherein the initial light pulse is generated by modulating the intensity of the light; (b) splitting the initial light pulse into a pair of light pulses; (c) causing one of the light pulses to be delayed relative to the other of the light pulses; (d) transmitting the light pulses along the optical fiber; (e) receiving reflections of the light pulses off the FBGs; and (f) determining whether an optical path length between the FBGs has changed from an interference pattern resulting from the reflections of the light pulses.