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公开(公告)号：US10281646B2
公开(公告)日：2019-05-07
申请号：US15591836
申请日：2017-05-10
Applicant: Honeywell International Inc.
Inventor： Matthew Wade Puckett , Jianfeng Wu , Mary Salit , Tiequn Qiu
Abstract: An acousto-optic waveguide device comprises a substrate comprising a first material having a first refractive index and a first acoustic velocity; a cladding layer over the substrate, the cladding layer comprising a second material having a second refractive index that is distinct from the first refractive index, the second material having a second acoustic velocity that is distinct from the first acoustic velocity; and an optical core surrounded by the cladding layer, the optical core comprising a third material having a third refractive index that is higher that the first refractive index and the second refractive index, the third material having a third acoustic velocity that is distinct from the first acoustic velocity and the second acoustic velocity. The cladding layer that surrounds the optical core has a thickness configured to substantially confine acoustic waves to the cladding layer when an optical signal propagates through the optical core.
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32.发明授权Systems and methods for stabilized stimulated brillouin scattering lasers with ultra-low phase noise 有权具有超低相位噪声的稳定受激布里渊散射激光器的系统和方法公开(公告)号：US09197032B2
公开(公告)日：2015-11-24
申请号：US14243794
申请日：2014-04-02
Applicant: Honeywell International Inc.
Inventor： Tiequn Qiu , Jianfeng Wu , Glen A. Sanders
CPC classification number: H01S3/302 , G01C19/727 , H01S3/0085 , H01S3/06791 , H01S3/083 , H01S3/1053 , H01S3/1304 , H01S3/1305 , H01S3/30
Abstract: Systems and methods for stabilized stimulated Brillouin scattering lasers with ultra-low phase noise are provided. In one embodiment, a method for producing a Stimulated Brillouin Scattering (SBS) beam comprises: generating laser light from a tunable laser source; splitting the laser light into a first light beam and a second light beam; creating a phase modulated light beam by applying a phase modulation to the first light beam; locking a frequency of the laser light to a frequency of a ring cavity using the phase modulated light beam and a Pound-Drever-Hall servo loop coupled to the tunable laser source; coupling the second light beam into the ring cavity in a direction of travel opposite to that of the phase modulated light beam; generating a Stimulated Brillouin Scattering light beam in the ring cavity from the second light beam; and outputting the Stimulated Brillouin Scattering light beam.
Abstract translation: 提供了具有超低相位噪声的稳定受激布里渊散射激光器的系统和方法。 在一个实施例中，一种用于产生受激布里渊散射（SBS）光束的方法包括：从可调激光源产生激光; 将激光分为第一光束和第二光束; 通过对所述第一光束施加相位调制来产生相位调制光束; 使用相位调制光束将激光的频率锁定到环形腔的频率，以及耦合到可调谐激光源的磅Drever-Hall伺服环路; 将第二光束沿与相位调制光束相反的行进方向耦合到环形腔中; 从第二光束在环形空腔中产生受激的布里渊散射光束; 并输出受激布里渊散射光束。
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33.发明申请SYSTEMS AND METHODS FOR AN INTENSITY STABILIZED RESONATOR FIBER OPTIC GYROSCOPE 有权强度稳定型谐振器光纤陀螺仪的系统与方法公开(公告)号：US20150316382A1
公开(公告)日：2015-11-05
申请号：US14266356
申请日：2014-04-30
Applicant: Honeywell International Inc.
Inventor： Glen A. Sanders , Lee K. Strandjord , Jianfeng Wu , Tiequn Qiu
IPC: G01C19/72
CPC classification number: G01C19/727 , G01C19/721
Abstract: Systems and methods for an intensity stabilized resonator fiber optic gyroscope are provided. In one embodiment, a method for providing optical intensity stabilization system for a resonator fiber optic gyroscope (RFOG) is provided. The method comprises: injecting a phase modulated light beam into a fiber optic ring resonator coil; measuring a DC component of the phase modulated light beam at an output of the fiber optic ring resonator coil; generating a feedback control signal based on the DC component; and attenuating the phase modulated light beam prior to injection into the fiber optic ring resonator coil by controlling a variable optical attenuator with the feedback control signal.
Abstract translation: 提供了用于强度稳定的谐振器光纤陀螺仪的系统和方法。 在一个实施例中，提供了一种用于提供用于谐振器光纤陀螺仪（RFOG）的光强度稳定系统的方法。 该方法包括：将相位调制光束注入到光纤环形谐振器线圈中; 在光纤环形谐振器线圈的输出处测量相位调制光束的直流分量; 基于DC分量产生反馈控制信号; 以及通过利用所述反馈控制信号控制可变光衰减器，在将所述相位调制光束注入所述光纤环形谐振器线圈之前衰减。
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公开(公告)号：US08830478B2
公开(公告)日：2014-09-09
申请号：US13693321
申请日：2012-12-04
Applicant: Honeywell International Inc.
Inventor： Jianfeng Wu , Tiequn Qiu , Glen A. Sanders , Lee K. Strandjord
CPC classification number: H01S3/302 , G01C19/727 , H01S3/30
Abstract: Systems and methods for measuring rotation using an optical frequency comb stimulated Brillouin scattering gyroscope are provided. In certain embodiments, a system comprises a light source that produces a multiple-frequency light beam based on an optical frequency comb; and an optical fiber resonator coupled to the light source, the multiple-frequency light beam propagating in a first direction within the optical fiber resonator, wherein the multiple -frequency light beam generates stimulated Brillouin scattering (SBS) for a frequency, wherein the Brillouin scattering generates an SBS light beam to propagate in a second direction, the first direction being opposite in direction to the second direction. The system also comprises a servo to control the frequencies of the optical frequency comb to lock a plurality of component frequencies on resonance peaks of the optical fiber resonator; and a mixer that determines a frequency difference between the SBS light beam and the multiple-frequency light beam.
Abstract translation: 提供了使用光学频率梳状受激布里渊散射陀螺仪测量旋转的系统和方法。 在某些实施例中，系统包括基于光频梳产生多频光束的光源; 耦合到所述光源的光纤谐振器，所述多频光束在所述光纤谐振器内沿第一方向传播，其中所述多频光束为频率产生受激布里渊散射（SBS），其中所述布里渊散射 产生SBS光束沿第二方向传播，第一方向与第二方向相反。 该系统还包括伺服器，用于控制光频梳的频率以锁定光纤谐振器的共振峰上的多个分量频率; 以及确定SBS光束和多频光束之间的频率差的混合器。
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35.发明申请公开(公告)号：US20250027771A1
公开(公告)日：2025-01-23
申请号：US18356186
申请日：2023-07-20
Applicant: Honeywell International Inc.
Inventor： Tiequn Qiu , Jianfeng Wu , Glen A. Sanders , Matthew Wade Puckett , Steven Tin , Marc Smiciklas
Abstract: A method of operating a resonator optical gyroscope includes generating optical signals having a broadband frequency range. The method includes coupling the optical signals into an optical resonator (OR) to propagate in a first direction and coupling the optical signals out of the OR after the optical signals pass through the OR in the first direction. The method includes coupling optical signals into the OR to propagate in a second direction and coupling optical signals out of the OR after the optical signals pass through the OR in the second direction. The method includes amplifying the optical signals coupled out of the OR by the second optical coupler or the optical signals coupled out of the OR by the first optical coupler to generate amplified optical signals and generating electrical signals corresponding to the amplified optical signals. The method includes determining a rotation rate based on the electrical signals.
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Patent Agency Ranking
36.发明申请公开(公告)号：US20240380177A1
公开(公告)日：2024-11-14
申请号：US18314657
申请日：2023-05-09
Applicant: Honeywell International Inc.
Inventor： Matthew Wade Puckett , Jianfeng Wu , Tiequn Qiu , Steven Tin , Karl D. Nelson , Chad Hoyt
Abstract: A photonics device comprises a waveguide platform including a substrate layer, a cladding layer over the substrate layer, and a waveguide layer embedded in the cladding layer. The waveguide layer includes a waveguide ring resonator, and a bus waveguide in optical communication with the waveguide ring resonator. The waveguide ring resonator is configured to generate a stimulated Brillouin scattering (SBS) beam when a pump laser beam is optically coupled into the waveguide ring resonator from the bus waveguide. The waveguide ring resonator has a radius and corresponding round-trip path length such that a free-spectral range (FSR) of the waveguide ring resonator is misaligned with respect to a SBS gain peak of the SBS beam, such that an SBS gain coefficient has a magnitude to produce a substantially reduced linewidth of the SBS beam.
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公开(公告)号：US20240369776A1
公开(公告)日：2024-11-07
申请号：US18777982
申请日：2024-07-19
Applicant: Honeywell International Inc.
Inventor： Jianfeng Wu , Matthew Wade Puckett , Steven Tin , Tiequn Qiu
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.
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公开(公告)号：US20240345185A1
公开(公告)日：2024-10-17
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: G01R33/032 , G02F1/39 , H01S3/091 , H01S3/108
CPC classification number: G01R33/032 , G02F1/395 , H01S3/0912 , H01S3/1083 , H01S3/1086
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.
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公开(公告)号：US20240322517A1
公开(公告)日：2024-09-26
申请号：US17376894
申请日：2021-07-15
Applicant: Honeywell International Inc.
Inventor： Chad Fertig , Chad Hoyt , Glen A. Sanders , Jianfeng Wu , Mary Salit
CPC classification number: H01S3/0675 , H01S3/08013
Abstract: In some embodiments, a system includes a laser that generates an optical signal and a resonator that receives the optical signal. The resonator includes an optical resonator cavity comprising a first and second end, wherein the optical signal propagates at a resonant frequency; a first optical anti-resonator terminating the first end and having a first stopband; and a second optical anti-resonator terminating the second end and having a second stopband. The system includes a detector that generates an electrical signal from a modified resonator output of the resonator; and Pound-Drever-Hall servo circuitry configured to generate control signals for controlling a frequency of the optical signal generated by the laser or phase modulation devices attached to the optical resonator cavity or the first or second optical anti-resonator, wherein each phase modulation changes a length of at least one of the optical resonator cavity or the first or second optical anti-resonator.
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公开(公告)号：US20240302168A1
公开(公告)日：2024-09-12
申请号：US18182217
申请日：2023-03-10
Applicant: Honeywell International Inc.
Inventor： Jianfeng Wu , Tiequn Qiu , Matthew Wade Puckett , Steven Tin
IPC: G01C19/72
CPC classification number: G01C19/726 , G01C19/727
Abstract: A photonics gyroscope comprises a laser and a common intensity modulation unit that outputs an intensity modulated beam, split into a CCW beam having a first power level and a CW beam having a second power level. A first phase modulator (PA) receives the CCW beam, and a second PA receives the CW beam. A variable optical attenuator (VOA) is coupled to the first or second PA. The CCW beam is coupled into a resonator and the CW beam is coupled into the resonator. A first detector receives the CCW beam and a second detector receives the CW beam from the resonator. A CCW control loop locks the CCW beam, and a CW control loop locks the CW beam, to resonance peaks. The VOA receives a feedback loop signal to aid in balancing power levels between CCW and CW beams to eliminate a rate signal at an intensity modulation frequency.
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