-
公开(公告)号：US12188998B2
公开(公告)日：2025-01-07
申请号：US18053535
申请日：2022-11-08
Applicant: Honeywell International Inc.
Inventor： Matthew Wade Puckett , Neal Eldrich Solmeyer , Mary Salit , Jianfeng Wu , Matthew Robbins
IPC: G01R33/32 , G01R33/032 , G02F1/39 , H01S3/091 , H01S3/108
Abstract: A photonics device for threshold magnetometry includes an absorbent material with nonlinear optical susceptibility, such as a diamond material with nitrogen vacancy defects, that is disposed in an optical resonator. The optical resonator receives light from an input source and includes nonlinear optical properties that enable the resonator to undergo a nonlinear photon generation process at a certain threshold power level to generate photons at distinct frequencies from the input light. The absorbent material absorbs photons entering the resonator when excited, which causes the threshold power level to shift as a function of the absorption. This may cause the optical resonator to stop generating photons via the nonlinear photon generation process and output a change in power. The change in power can be used to determine the characteristics of a present magnetic field.
-
82.发明申请公开(公告)号：US20240426610A1
公开(公告)日：2024-12-26
申请号：US18341281
申请日：2023-06-26
Applicant: Honeywell International Inc.
Inventor： Tiequn Qiu , Jianfeng Wu , Matthew Wade Puckett , Steven Tin , Glen A. Sanders
Abstract: Various examples of a closed-loop optical gyroscope are disclosed. The closed-loop optical gyroscope includes a broadband light source configured to generate broadband optical signal(s). The broadband optical signal(s) propagate in an optical resonator and are coupled in and out of the optical resonator by optical couplers. A phase modulator applies phase modulation to the optical signal(s) based on a sawtooth modulation signal. The optical signal(s) repropagate in the optical resonator in a different direction. The optical signal(s) are then received and analyzed to determine parameter(s) of the phase modulator. One or more processors configure the phase modulator based on the determined parameter(s).
-
公开(公告)号：US12169349B2
公开(公告)日：2024-12-17
申请号：US18540702
申请日：2023-12-14
Applicant: Honeywell International Inc.
Inventor： Matthew Puckett , Chad Hoyt , Jianfeng Wu , Karl Nelson
IPC: G02F1/35
Abstract: A method may comprise: generating an optical frequency comb; applying a filter in a first configuration to the generated optical frequency comb to select a first frequency of the optical frequency comb, wherein, in the first configuration, the first frequency aligns with a first pass-band of the filter, and a second frequency of the optical frequency comb does not align with a second pass-band of the filter; altering the filter to a second configuration to shift the first pass-band and the second pass-band to a shifted first pass-band and a shifted second pass-band; and applying the altered filter to the generated optical frequency comb to select the second frequency of the optical frequency comb, wherein the second frequency aligns with the shifted second pass-band of the filter, and the first frequency of the optical frequency comb does not align with the shifted first pass-band of the filter.
-
公开(公告)号：US12105327B2
公开(公告)日：2024-10-01
申请号：US18061695
申请日：2022-12-05
Applicant: Honeywell International Inc.
Inventor： Jianfeng Wu , Matthew Wade Puckett , Steven Tin , Tiequn Qiu
CPC classification number: G02B6/3596 , G01C19/24 , G02B6/29338
Abstract: Techniques are provided for implementing and using a travelling wave resonator, comprising planar optical waveguide including at least two stacked cores, to diminish Kerr effect in the travelling wave resonator. The travelling wave resonator may be used in a resonator optical gyroscope.
-
公开(公告)号：US12019353B2
公开(公告)日：2024-06-25
申请号：US18045936
申请日：2022-10-12
Applicant: HONEYWELL INTERNATIONAL INC.
Inventor： Matthew W. Puckett , Chad Hoyt , Karl Nelson , Jianfeng Wu
CPC classification number: G02F1/365 , G02F1/3542 , G02F2201/307 , G02F2203/56
Abstract: An optical frequency comb generation system includes an optical waveguide portion having a uniform width, a first chirped Bragg grating disposed at one end of the optical waveguide portion and a second chirped Bragg grating disposed at the other end of the optical waveguide portion. The first chirped Bragg grating includes at least a first periodic variation having a first refractive index and a second periodic variation having a second refractive index. The second chirped Bragg grating includes the at least first and second periodic variations. A first cavity associated with a first resonant frequency extends between the first periodic variation of the first chirped Bragg grating and the first periodic variation of the second chirped Bragg grating. A second cavity associated with a second resonant frequency extends between the second periodic variation of the first chirped Bragg grating and the second periodic variation of the second chirped Bragg grating.
-
Patent Agency Ranking
公开(公告)号：US11920933B2
公开(公告)日：2024-03-05
申请号：US17171858
申请日：2021-02-09
Applicant: Honeywell International Inc.
Inventor： Jianfeng Wu , Matthew Wade Puckett , Karl D. Nelson
CPC classification number: G01C19/661 , G01C19/728 , H01S3/1086
Abstract: Techniques for reducing the bias error present in optical gyroscopes is disclosed. Such techniques include at least one path length adjustment member placed in an optical gyroscope resonator, which are configured to modulate the optical path length of the resonator so that bias errors attributable to the optical path length are shifted outside of the bandwidth of the optical gyroscope. In some embodiments, the at least one path length adjustment member includes a plurality of microheaters coupled to the resonator, in which case optical path length modulation is achieved by heating the resonator via the microheaters. Alternatively, a plurality of piezo-electric regions can be placed in the resonator, which enables optical path length modulation through electric field gradients applied to the piezo-electric regions.
-
公开(公告)号：US11431144B2
公开(公告)日：2022-08-30
申请号：US17142929
申请日：2021-01-06
Applicant: Honeywell International Inc.
Inventor： Jianfeng Wu , Karl D. Nelson , Matthew Wade Puckett
Abstract: An optical resonator device, which can be implemented in a Brillouin laser, comprises a first waveguide ring resonator having a first diameter, and one or more second waveguide ring resonators adjacent to the first waveguide ring resonator. The one or more second waveguide ring resonators each have a second diameter that is less than the first diameter. The one or more second waveguide ring resonators optically communicate with the first waveguide ring resonator, such that an optical signal in the first waveguide ring resonator optically couples into the one or more second waveguide ring resonators. The one or more second waveguide ring resonators is configured such that when the optical signal resonates within the first waveguide ring resonator and the one or more second waveguide ring resonators, the optical signal within the first waveguide ring resonator is suppressed.
-
公开(公告)号：US20220216664A1
公开(公告)日：2022-07-07
申请号：US17142929
申请日：2021-01-06
Applicant: Honeywell International Inc.
Inventor： Jianfeng Wu , Karl D. Nelson , Matthew Wade Puckett
Abstract: An optical resonator device, which can be implemented in a Brillouin laser, comprises a first waveguide ring resonator having a first diameter, and one or more second waveguide ring resonators adjacent to the first waveguide ring resonator. The one or more second waveguide ring resonators each have a second diameter that is less than the first diameter. The one or more second waveguide ring resonators optically communicate with the first waveguide ring resonator, such that an optical signal in the first waveguide ring resonator optically couples into the one or more second waveguide ring resonators. The one or more second waveguide ring resonators is configured such that when the optical signal resonates within the first waveguide ring resonator and the one or more second waveguide ring resonators, the optical signal within the first waveguide ring resonator is suppressed.
-
公开(公告)号：US11150137B2
公开(公告)日：2021-10-19
申请号：US16704862
申请日：2019-12-05
Applicant: Honeywell International Inc.
Inventor： Matthew Wade Puckett , Jianfeng Wu , Steven Tin , Neil A. Krueger
Abstract: An integrated photonics chip for thermal imaging comprises a photonics substrate including a plurality of receiver elements. Each receiver element comprises a first grating coupler optically coupled to a first waveguide filter and configured to receive a first wavelength of light at a given angle, with the first waveguide filter configured to pass the first wavelength of light; and a second grating coupler optically coupled to a second waveguide filter and configured to receive a second wavelength of light at the given angle, with second waveguide filter configured to pass the second wavelength of light. Each receiver element receives the wavelengths of light from an object of interest that emits the light due to blackbody radiation, and receives the wavelengths of light at respectively different angles. Each grating coupler receives a unique wavelength of light with respect to the other wavelengths of light received by the other grating couplers.
-
公开(公告)号：US20210180953A1
公开(公告)日：2021-06-17
申请号：US16575116
申请日：2019-09-18
Applicant: Honeywell International Inc.
Inventor： Jianfeng Wu , Matthew Wade Puckett , Steven Tin
Abstract: A stimulated Brillouin scattering gyroscope is provided. A pump laser generates continuous wave (CW) energy that travels through at least one bus waveguide to a waveguide resonator. A reflector is positioned within the waveguide resonator. The reflector is configured to pass at least some of the CW energy in a first direction and reflect at least some stimulated Brillouin scattering (SBS) energy in a second direction. A first detector is in operational communication with the at least one bus waveguide to detect CW energy. An output of the first detector used to at least adjust a pump laser frequency of the pump laser. A second detector is also in operational communication with the at least one bus waveguide. The second detector is used to determine phase shifts in detected SBS energy to determine at least rotation.
-
-
-
-
-
-
-
-
-
Search Results
97
records
(took 0.023 seconds)
