公开(公告)号：US10416005B2

公开(公告)日：2019-09-17

申请号：US15532963

申请日：2015-12-04

Applicant: Hifi Engineering Inc.

Inventor： Brian H. Moore ,  Walter Jeffrey Shakespeare ,  Phillip William Wallace ,  Viet Hoang ,  Tom Clement

IPC: G01B9/02 ,  G01B11/16 ,  G01D18/00 ,  G01D5/353

Abstract: An optical fiber interrogator for interrogating optical fiber that includes fiber Bragg gratings (“FBGs”). The interrogator includes a light source operable to emit phase coherent light, amplitude modulation circuitry optically coupled to the light source and operable to generate pulses from the light, and control circuitry communicatively coupled to the amplitude modulation circuitry that is configured to perform a method for interrogating the optical fiber. The method includes generating a pair of light pulses by using the amplitude modulation circuitry to modulate light output by the light source without splitting the light.

公开(公告)号：US11054288B2

公开(公告)日：2021-07-06

申请号：US16523864

申请日：2019-07-26

Applicant: Hifi Engineering Inc.

Inventor： Brian H. Moore ,  Walter Jeffrey Shakespeare ,  Phillip William Wallace ,  Viet Hoang ,  Tom Clement

IPC: G01D5/353 ,  G01B11/16 ,  G01B9/02 ,  G01D18/00

Abstract: An optical fiber interrogator for interrogating optical fiber that includes fiber Bragg gratings (“FBGs”). The interrogator includes a light source operable to emit phase coherent light, amplitude modulation circuitry optically coupled to the light source and operable to generate pulses from the light, and control circuitry communicatively coupled to the amplitude modulation circuitry that is configured to perform a method for interrogating the optical fiber. The method includes generating a pair of light pulses by using the amplitude modulation circuitry to modulate light output by the light source without splitting the light.

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：US20180266854A1

公开(公告)日：2018-09-20

申请号：US15532963

申请日：2015-12-04

Applicant: Hifi Engineering Inc.

Inventor： Brian H. Moore ,  Walter Jeffrey Shakespeare ,  Phillip William Wallace ,  Viet Hoang ,  Tom Clement

IPC: G01D5/353 ,  G01D18/00 ,  G01B11/16 ,  G01B9/02

CPC classification number: G01D5/35316 ,  G01B9/02067 ,  G01B11/161 ,  G01B11/18 ,  G01B2290/70 ,  G01D18/00

Abstract: An optical fiber interrogator for interrogating optical fiber that includes fiber Bragg gratings (“FBGs”). The interrogator includes a light source operable to emit phase coherent light, amplitude modulation circuitry optically coupled to the light source and operable to generate pulses from the light, and control circuitry communicatively coupled to the amplitude modulation circuitry that is configured to perform a method for interrogating the optical fiber. The method includes generating a pair of light pulses by using the amplitude modulation circuitry to modulate light output by the light source without splitting the light.

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.