公开(公告)号：US11268806B2

公开(公告)日：2022-03-08

申请号：US16936282

申请日：2020-07-22

Applicant: Honeywell International Inc.

Inventor： Chad Fertig ,  David Campagna ,  Karl D. Nelson

IPC: G01B11/14 ,  H04B10/29 ,  H04B10/50

Abstract: Systems and methods for dynamic locking of optical path times using entangled photons are provided. A system includes an optical source for generating bi-photons; tracer laser beam sources for generating tracer laser beams; telescopes that emit the tracer laser beams and the bi-photons to remote reflectors, each bi-photon traveling along an optical path in a pair of optical paths toward a corresponding remote reflector, wherein the telescopes receive reflected bi-photons from the remote reflectors; and communication links, wherein the optical source respectively communicates with first and second remote reflectors through a first and second communication link. Also, the optical source uses the tracer laser beams and the communication links to respectively point the bi-photons towards the remote reflectors. Moreover, the system includes an interferometer that provides information regarding detection of the reflected bi-photons, wherein the optical source uses the information to adjust optical path lengths to be substantially equal.

公开(公告)号：US11215760B2

公开(公告)日：2022-01-04

申请号：US16800877

申请日：2020-02-25

Applicant: Honeywell International Inc.

Inventor： Matthew Wade Puckett ,  Karl D. Nelson

IPC: G02B6/34

Abstract: An optical coupler device comprises a substrate having a substantially planar upper surface, and a grating structure on the upper surface of the substrate. In one embodiment, the grating structure comprises a copropagating array of waveguides that are substantially parallel to each other and extend along at least a portion of the upper surface of the substrate. Each of the waveguides has opposing sidewalls, wherein a width of each waveguide is defined by a distance between the opposing sidewalls. The opposing sidewalls each have a periodic structure that produces a sidewall modulation for each of the waveguides. An input port is in optical communication with the grating structure. The input port is configured to direct an input light beam in plane into the grating structure such that the beam propagates along the waveguides. The grating structure is configured to diffract the beam out of plane and into free space.

公开(公告)号：US20210384695A1

公开(公告)日：2021-12-09

申请号：US16892016

申请日：2020-06-03

Applicant: Honeywell International Inc.

Inventor： Matthew Wade Puckett ,  Karl D. Nelson ,  Jianfeng Wu

IPC: H01S3/108 ,  H01S3/083 ,  H01S3/30 ,  H01S3/102

Abstract: Systems and methods for a self-injection locked SBS laser are provided herein. In certain embodiments, a system includes a pump laser source providing a pump laser; an SBS resonator receiving the pump laser through a first port and scattering some of the pump laser to provide an SBS laser through the first port, wherein a frequency shift of Brillouin scattering within the SBS resonator is an integer multiple of a free-spectral range for the SBS resonator; a filter receiving the pump laser on a first filter port and the SBS laser on a second filter port, wherein the pump laser is output through the second filter port and the SBS laser is output through a drop port; and a pump laser path coupling the output pump laser into the pump laser source, wherein a frequency of the pump laser becomes locked to a resonance frequency of the SBS resonator.

公开(公告)号：US11187530B2

公开(公告)日：2021-11-30

申请号：US16595320

申请日：2019-10-07

Applicant: Honeywell International Inc.

Inventor： Neal Eldrich Solmeyer ,  Karl D. Nelson ,  Robert Compton

IPC: G01C19/58 ,  G01P15/03 ,  G01C21/16

Abstract: In an example, an optical gimbal is described, the optical gimbal comprising: a pulse generator configured to generate at least two coherent beam splitting pulses; a first optical beam director configured to tilt the vector of the beam splitting pulses by an angle θ; an atom source configured to allow the beam splitting pulses to manipulate trapped atoms within the atom source; a processor configured to receive the angle θ, and control the pulse generator and the beam director; a detector coupled to the atom source configured to measure a final population of the atoms in different states.

公开(公告)号：US20210333106A1

公开(公告)日：2021-10-28

申请号：US16858272

申请日：2020-04-24

Applicant: Honeywell International Inc.

Inventor： Jianfeng Wu ,  Matthew Wade Puckett ,  Karl D. Nelson

IPC: G01C19/66 ,  H01S3/067 ,  H01S3/30

Abstract: A method for reducing or eliminating bias instability in a SBS laser gyroscope comprises introducing a first pump signal propagating in a CW direction, and a second pump signal propagating in a CCW direction in a resonator; generating a CCW first-order SBS signal and a CW first-order SBS signal in the resonator; increasing a power level of the first pump signal above a threshold level such that the CW first-order SBS signal generates a CCW second-order SBS signal; and increasing a power level of the second pump signal above the threshold level such that the CCW first-order SBS signal generates a CW second-order SBS signal. Above the threshold level, an intensity fluctuation of the first-order SBS signals disappear and their DC power are clamped at substantially the same power level. A Kerr effect bias instability of the SBS laser gyroscope is reduced or eliminated by the clamped first-order SBS signals.

公开(公告)号：US20210271021A1

公开(公告)日：2021-09-02

申请号：US16803712

申请日：2020-02-27

Applicant: Honeywell International Inc.

Inventor： Matthew Wade Puckett ,  Karl D. Nelson

IPC: G02B6/124 ,  G02B6/12 ,  G02B6/02 ,  G02B27/42

Abstract: An optical coupler device comprises an optical waveguide having a first edge and an opposing second edge that extend in a direction substantially parallel to a propagation direction of an input light beam injected into the optical waveguide. A grating structure is on a portion of the optical waveguide, with the grating structure having a first side and an opposing second side. The first and second sides of the grating structure extend in the same direction as the first and second edges of the optical waveguide. An optical slab adjoins with the first side of the grating structure and is in optical communication with an output of the grating structure. The grating structure includes an array of grating lines configured to diffract the input light beam into the slab at an angle with respect to the propagation direction, such that a diffracted light beam is output from the slab.

公开(公告)号：US10823668B2

公开(公告)日：2020-11-03

申请号：US15961478

申请日：2018-04-24

Applicant: Honeywell International Inc.

Inventor： Karl D. Nelson ,  Matthew Wade Puckett ,  Neil Krueger

IPC: G01N21/31 ,  G04F5/14

Abstract: An apparatus is provided. The apparatus comprises a substrate; a low index of refraction region in or on the substrate; an optical waveguide; a cover; wherein at least a portion of the low index of refraction region and the optical waveguide are hermetically sealed under the cover; a chamber formed by the low index of refraction region and the cover; atoms; an environment, in the chamber, including the atoms and having a first index of refraction; a segment of the optical waveguide formed over the low index of refraction region and within the chamber; and wherein the segment has a second index of refraction which is substantially equal to the first index of refraction.

公开(公告)号：US20180358772A1

公开(公告)日：2018-12-13

申请号：US15618833

申请日：2017-06-09

Applicant: Honeywell International Inc.

Inventor： Matthew Wade Puckett ,  Karl D. Nelson ,  Jianfeng Wu

IPC: H01S3/067 ,  H01S3/30 ,  G01C19/66

CPC classification number: H01S3/0675 ,  G01C19/66 ,  G01C19/661 ,  G01C19/72 ,  G01C19/721 ,  G01C19/727 ,  H01S3/0078 ,  H01S3/06791 ,  H01S3/10092 ,  H01S3/1303 ,  H01S3/1305 ,  H01S3/302

Abstract: An apparatus is provided. The apparatus comprises: an optical resonator including a surface; wherein a Bragg grating is formed at least part of the surface of the optical resonator; and wherein the Bragg grating has a Bragg frequency substantially equal to a center frequency of an Nth order Brillouin gain region capable of generating an Nth order Stokes signal.

公开(公告)号：US20230408765A1

公开(公告)日：2023-12-21

申请号：US17843485

申请日：2022-06-17

Applicant: Honeywell International Inc.

Inventor： Matthew Wade Puckett ,  Chad Hoyt ,  Karl D. Nelson ,  Jianfeng Wu

IPC: G02B6/122 ,  G02B6/124

CPC classification number: G02B6/1228 ,  G02B6/124 ,  G02B2006/12107

Abstract: Techniques are provided for implementing a low insertion loss optical coupler utilizing a low confinement planar optical waveguide and two high confinement planar optical waveguides. The optical coupler efficiently couples an optical signal with a cross section greater than either high confinement planar optical waveguide.

公开(公告)号：US11486706B2

公开(公告)日：2022-11-01

申请号：US16858272

申请日：2020-04-24

Applicant: Honeywell International Inc.

Inventor： Jianfeng Wu ,  Matthew Wade Puckett ,  Karl D. Nelson

IPC: G01C19/66 ,  H01S3/30 ,  H01S3/067

Abstract: A method for reducing or eliminating bias instability in a SBS laser gyroscope comprises introducing a first pump signal propagating in a CW direction, and a second pump signal propagating in a CCW direction in a resonator; generating a CCW first-order SBS signal and a CW first-order SBS signal in the resonator; increasing a power level of the first pump signal above a threshold level such that the CW first-order SBS signal generates a CCW second-order SBS signal; and increasing a power level of the second pump signal above the threshold level such that the CCW first-order SBS signal generates a CW second-order SBS signal. Above the threshold level, an intensity fluctuation of the first-order SBS signals disappear and their DC power are clamped at substantially the same power level. A Kerr effect bias instability of the SBS laser gyroscope is reduced or eliminated by the clamped first-order SBS signals.