公开(公告)号：US20250109941A1

公开(公告)日：2025-04-03

申请号：US18479505

申请日：2023-10-02

Applicant: Honeywell International Inc.

Inventor： Tiequn Qiu ,  Jianfeng Wu ,  Glen A. Sanders ,  Matthew Wade Puckett ,  Steven Tin

IPC: G01C19/72 ,  G02B6/293 ,  H01S3/067

Abstract: A method of operating a resonator optical gyroscope includes generating optical signals having broadband frequency range; coupling optical signals into optical resonator (OR) to propagate in first direction and out of OR after optical signals pass through OR in first direction; applying phase modulation to optical signals coupled out of OR to generate phase-modulated optical signals; filtering first portion of phase-modulated optical signals to generate filtered, phase-modulated optical signals; generating first electrical signals indicative of power level of the filtered, phase-modulated optical signals and RIN; coupling second portion of phase-modulated optical signals into OR to propagate in second direction and out of OR after phase-modulated optical signals pass through the OR in second direction; generating second electrical signals indicative of power level of phase-modulated optical signals after passing through OR in second direction; and determining a rotation rate based on the first electrical signals and the second electrical signals.

公开(公告)号：US12218483B2

公开(公告)日：2025-02-04

申请号：US17581692

申请日：2022-01-21

Applicant: Honeywell International Inc.

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

IPC: G02B6/293 ,  G02F1/01 ,  H01S5/00 ,  H01S5/0683 ,  H01S5/40 ,  H03K5/1252 ,  H01S5/12

Abstract: Systems and methods for a tunable RF synthesizer based on offset optical frequency combs is provided herein. An exemplary system includes two lasers, a first laser generating a first laser output and a second laser generating a second laser output; and a coupler that receives the first and second laser outputs. Further, the system includes a resonator having first and second sections coupled to one another, the coupler coupling the first and second laser outputs into the resonator; a splitter that couples the first section to the second section, the splitter splitting a first proportion of the first laser output and a second proportion of the second laser output onto different paths within the resonator; and a controller that controls the splitter to change a size of the first proportion in relation to the first laser and the second proportion in relation to the second laser.

公开(公告)号：US20240377199A1

公开(公告)日：2024-11-14

申请号：US18316086

申请日：2023-05-11

Applicant: Honeywell International Inc.

Inventor： Jianfeng Wu ,  Tiequn Qiu ,  Steven Tin ,  Glen A. Sanders ,  Matthew Wade Puckett

IPC: G01C19/72 ,  G02B6/12

Abstract: A gyroscope comprises a source emitting a broadband beam, and a first waveguide arrangement that splits the beam into CCW and CW beams. First and second phase modulators are coupled to the waveguide arrangement and provide phase modulations or frequency shifts to the CCW and CW beams. An optical resonator is in communication with the phase modulators such that the CCW and CW beams are optically coupled into the resonator. A second waveguide arrangement receives the CCW and CW beams transmitted from the resonator. First and second RIN detectors are coupled to the second waveguide arrangement and respectively receive the CCW and CW beams. A rate detector receives the CCW and CW beams. A rate calculation unit receives intensity noise signals from the RIN detectors, and rate and intensity noise signals from the rate detector. The rate calculation unit performs a RIN subtraction technique to reduce intensity noise limited ARW.

公开(公告)号：US12111496B2

公开(公告)日：2024-10-08

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: G02B6/125 ,  G02B6/12 ,  G02B6/122 ,  G02B6/124 ,  G02B6/28

CPC classification number: G02B6/125 ,  G02B6/1228 ,  G02B6/124 ,  G02B6/2821 ,  G02B2006/12107 ,  G02B2006/12147

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：US20240264255A1

公开(公告)日：2024-08-08

申请号：US18165894

申请日：2023-02-07

Applicant: Honeywell International Inc.

Inventor： Neal Eldrich Solmeyer ,  Matthew Wade Puckett ,  Matthew Robbins ,  Jianfeng Wu ,  Mary Salit

IPC: G01R33/345 ,  G01R33/26

CPC classification number: G01R33/345 ,  G01R33/26

Abstract: Systems for an integrated photonic responsive material sensor are described herein. In certain embodiments, a system includes a carrier wafer that includes a cavity formed in the carrier wafer. The carrier wafer also includes a responsive waveguide coupled to the cavity, the responsive waveguide formed from responsive material responsive to a force by shifting a resonance frequency of point defects in the responsive material in response to the force, wherein a pump light is directed to the responsive waveguide to prepare the responsive waveguide to absorb a probe light when exposed to a radio frequency at the point defect resonance frequency. Additionally, the system includes components coupled to the carrier wafer, wherein the components include a probe light source that generates the probe light, wherein the components are positioned in relation to the carrier wafer to couple the probe light into the cavity.

公开(公告)号：US11362480B2

公开(公告)日：2022-06-14

申请号：US16892016

申请日：2020-06-03

Applicant: Honeywell International Inc.

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

IPC: H01S3/10 ,  H01S3/108 ,  H01S3/083 ,  H01S3/102 ,  H01S3/30

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：US20220021177A1

公开(公告)日：2022-01-20

申请号：US16933537

申请日：2020-07-20

Applicant: Honeywell International Inc.

Inventor： Tiequn Qiu ,  Teresa Marta ,  Jianfeng Wu

IPC: H01S3/131 ,  H01S3/094 ,  H01S3/081 ,  H01S3/13 ,  H01S3/083

Abstract: Systems and methods for ring laser gyroscopes (RLGs) are provided. An RLG includes a traveling-wave resonator cavity with three or more mirrors and a gain medium positioned in the traveling-wave resonator cavity between two of the three or more mirrors. The gain medium is a solid-state gain medium or a nonlinear optical medium. The RLG further includes a first pump laser and a second pump laser to pump the gain medium in different directions and generate first and second lasing signals that traverse the traveling-wave resonator cavity in a opposite directions. The RLG further includes first and second photodetectors to measure levels of the first and second lasing signals. The RLG further includes at least one processor configured to adjust a power level of the first pump laser and/or a power level of the second pump laser based on the measured power levels of the first and second lasing signals.

公开(公告)号：US11002544B2

公开(公告)日：2021-05-11

申请号：US16734038

申请日：2020-01-03

Applicant: Honeywell International Inc.

Inventor： Lee K. Strandjord ,  Marc Smiciklas ,  Jianfeng Wu ,  Glen A. Sanders

IPC: G01C19/72 ,  G01C19/66 ,  H01S3/13 ,  H01S3/23 ,  H01S3/08 ,  G01C19/64

Abstract: Systems and methods for performing resonator fiber optic gyroscope (RFOG) resonance hopping are described herein. For example, an RFOG includes a fiber optic resonator. The RFOG also includes a plurality of laser sources that each launch a respective laser for propagation within the fiber optic resonator. Further, the RFOG includes a threshold detector that determines when the operation of at least one laser source in the plurality of laser sources exceeds a threshold associated with the operational range of an aspect of the at least one laser source. Additionally, the RFOG includes a hop control logic that adjusts the frequency of at least one laser produced by the at least one laser source one or more resonant modes of the fiber optic resonator such that the aspect of the at least one laser moves away from the threshold towards a nominal value within the operational range.

公开(公告)号：US10855372B1

公开(公告)日：2020-12-01

申请号：US16654897

申请日：2019-10-16

Applicant: Honeywell International Inc.

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

IPC: G02B6/10 ,  H04B10/2537 ,  H01S3/067 ,  G02B6/02 ,  H01S3/30

Abstract: Coupled resonators having two resonances are described. A first resonance occurs at the frequency of a pump signal. A second resonance occurs at the frequency of a first Stokes signal. The stop band of the coupled resonators suppresses the second Stokes signal and thus all other higher order Stokes signals. The coupled resonators can be used to more efficiently generate a first Stokes signal having a narrow line width signal.

公开(公告)号：US10739137B2

公开(公告)日：2020-08-11

申请号：US16104806

申请日：2018-08-17

Applicant: Honeywell International Inc.

Inventor： Dean E Johnson ,  Jianfeng Wu ,  Alan Bruce Touchberry ,  Teresa Marta

IPC: G01C19/66 ,  H01S3/08 ,  H01S3/083 ,  H01S3/0933 ,  H01S3/0941 ,  H01S3/16 ,  H01S3/17

Abstract: A solid state ring laser gyroscope comprises a laser block including a resonant ring cavity having an optical closed loop pathway; a plurality of mirror structures mounted on the block and including respective multilayer mirrors that reflect light beams around the closed loop pathway; and a pump laser assembly in optical communication with the closed loop pathway through one of the mirror structures. One or more of the multilayer mirrors includes a rare-earth doped gain layer operative to produce bidirectional optical amplification of counter-propagating light beams in the closed loop pathway. In some embodiments, the gain layer comprises a rare-earth dopant other than neodymium that is doped into a glassy host material comprising titania, tantalum oxide, alumina, zirconia, silicate glass, phosphate glass, tellurite glass, fluorosilicate glass, or non-oxide glass. Alternatively, the gain layer can comprise a neodymium dopant that is doped into a glassy host material other than silica.