公开(公告)号：US20200096698A1

公开(公告)日：2020-03-26

申请号：US16357239

申请日：2019-03-18

Applicant: Honeywell International Inc.

Inventor： Matthew Wade Puckett ,  Jianfeng Wu ,  Mary Salit ,  Tiequn Qiu

IPC: G02B6/122 ,  G02F1/025 ,  G02F1/125 ,  G02F1/35 ,  G01C19/72 ,  G10K11/20

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.

公开(公告)号：US20180081112A1

公开(公告)日：2018-03-22

申请号：US15591747

申请日：2017-05-10

Applicant: Honeywell International Inc.

Inventor： Matthew Wade Puckett ,  Tiequn Qiu ,  Mary K. Salit ,  Jianfeng Wu

IPC: G02B6/122 ,  G02B6/136 ,  G10K11/24 ,  G01C19/66

CPC classification number: G02B6/122 ,  G01C19/661 ,  G02B6/136 ,  G02B2006/12138 ,  G02F1/025 ,  G02F1/125 ,  G02F1/353 ,  G10K11/24

Abstract: A waveguide device comprises a substrate having an upper surface and a first width; a cladding layer over the upper surface of the substrate, the cladding layer comprising a first material having a first refractive index, wherein the cladding layer has a second width that is less than the first width; and an optical core surrounded by the cladding layer, the optical core comprising a second material having a second refractive index that is higher that the first refractive index such that an optical signal will propagate through the optical core. The cladding layer that surrounds the optical core has a thickness configured to substantially confine acoustic waves to the cladding layer when the optical signal propagates through the optical core.

公开(公告)号：US20160204571A1

公开(公告)日：2016-07-14

申请号：US14680331

申请日：2015-04-07

Applicant: Honeywell International Inc.

Inventor： Jianfeng Wu ,  Mary K. Salit ,  Lee K. Strandjord ,  Glen A. Sanders ,  Tiequn Qiu

IPC: H01S3/30 ,  G01C19/66

CPC classification number: H01S3/302 ,  G01C19/66 ,  G01C19/72

Abstract: Systems and methods for an optical frequency comb stimulated Brillouin scattering gyroscope with a rigid optical waveguide resonator are provided. In one embodiment, a system comprises: a light source that produces an optical frequency comb comprising a multiple-frequency light field; a rigid optical waveguide resonator coupled to the light source, wherein a recirculating optical frequency comb produced from the optical frequency comb propagates in a first direction around the rigid optical waveguide resonator and generates within the rigid optical waveguide a SBS light field comprising at least one SBS frequency component, and wherein one or more optical frequency components of the recirculating optical frequency comb are locked on resonance peaks of the rigid optical waveguide resonator; and an optical mixer configured to produce an optical beat signal that varies as a function of a frequency difference between the stimulated Brillouin scattering light field and the recirculating optical frequency comb.

Abstract translation: 提供了具有刚性光波导谐振器的光学频率梳状受激布里渊散射陀螺仪的系统和方法。 在一个实施例中，系统包括：产生包括多频光场的光频梳的光源; 耦合到所述光源的刚性光波导谐振器，其中由所述光频梳产生的再循环光频梳在所述刚性光波导谐振器周围沿第一方向传播，并且在所述刚性光波导内产生包括至少一个SBS的SBS光场 频率分量，并且其中所述再循环光频梳的一个或多个光频分量锁定在所述刚性光波导谐振器的共振峰上; 以及配置成产生根据被激发的布里渊散射光场和再循环光频梳之间的频率差而变化的光学差拍信号的光学混合器。

公开(公告)号：US20150369606A1

公开(公告)日：2015-12-24

申请号：US14526300

申请日：2014-10-28

Applicant: Honeywell International Inc.

Inventor： Glen A. Sanders ,  Lee K. Strandjord ,  Tiequn Qiu ,  Jianfeng Wu

IPC: G01C19/72

CPC classification number: G01C19/727

Abstract: Systems and methods for a small low cost resonator fiber optic gyroscope (RFOG) with reduced optical errors are provided. In one embodiment, a RFOG comprises: a light source; an optical chip configured to couple a clockwise optical signal and a counterclockwise optical signal from the light source into a fiber optic resonator and couple the clockwise optical signal and the counterclockwise optical signal from the fiber optic resonator to at least one photodetector. The fiber optic resonator comprises a fiber optic coil having a first end point and a second end point. The fiber optic coil has a 90-degree splice located substantially half-way between the first end point and the second end point, is wrapped around a first fiber stretcher located between the first end point and the 90-degree splice, and is wrapped around a second fiber stretcher that is located between the second end point and the 90-degree splice.

Abstract translation: 提供了具有减少的光学误差的小型低成本谐振器光纤陀螺仪（RFOG）的系统和方法。 在一个实施例中，RFOG包括：光源; 光学芯片被配置为将来自光源的顺时针光信号和逆时针光信号耦合到光纤谐振器中，并将来自光纤谐振器的顺时针光信号和逆时针光信号耦合到至少一个光电检测器。 光纤谐振器包括具有第一端点和第二端点的光纤线圈。 光纤线圈具有基本上在第一端点和第二端点之间的中间位置的90度接头，围绕位于第一端点和90度接头之间的第一纤维拉伸器缠绕，并被包裹 位于第二端点和90度接头之间的第二纤维拉伸机。

公开(公告)号：US20150288135A1

公开(公告)日：2015-10-08

申请号：US14243794

申请日：2014-04-02

Applicant: Honeywell International Inc.

Inventor： Tiequn Qiu ,  Jianfeng Wu ,  Glen A. Sanders

IPC: H01S3/30 ,  H01S3/067

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。

公开(公告)号：US20250102302A1

公开(公告)日：2025-03-27

申请号：US18475503

申请日：2023-09-27

Applicant: Honeywell International Inc.

Inventor： Matthew Wade Puckett ,  Jianfeng Wu ,  Tiequn Qiu ,  Steven Tin

IPC: G01C19/72 ,  G02B6/26

Abstract: A directional coupler with reduced phase deviation is provided. The directional coupler includes a first coupler waveguide and second coupler waveguide. At least one of a spaced distance between the first coupler waveguide and the second coupler waveguide and a length of the first coupler waveguide and the second coupler waveguide selected to achieve an acceptable phase deviation and a set coupling ratio. The phase deviation is caused by a difference in loss coefficients between a first optical mode in the first coupler waveguide and a second optical mode in the second coupler waveguide.

公开(公告)号：US20250093158A1

公开(公告)日：2025-03-20

申请号：US18467490

申请日：2023-09-14

Applicant: Honeywell International Inc.

Inventor： Jianfeng Wu ,  Steven Tin ,  Matthew Wade Puckett ,  Tiequn Qiu

IPC: G01C19/72 ,  G01C19/66 ,  G02F2/02

Abstract: An interferometric resonator optical gyroscope includes an optical frequency comb generator configured to generate an optical frequency comb. Optical signals representative of the optical frequency comb pass through an optical resonator in different directions, and a rotation rate is determined based on the extent of interference between the optical signals. Parameters of the optical frequency comb generator can be controlled by a control servo based on an intensity of the optical signals after propagating in the optical resonator. Utilizing an optical frequency comb generator reduces the bias error during gyroscope operation.

公开(公告)号：US20250012572A1

公开(公告)日：2025-01-09

申请号：US18348169

申请日：2023-07-06

Applicant: Honeywell International Inc.

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

IPC: G01C19/72

Abstract: A gyroscope comprises first and second light sources that emit first and second beams with broadband spectrums, and a waveguide arrangement that communicates with the light sources. A resonator communicates with the waveguide arrangement to receive the beams. A first circulator is coupled to the waveguide arrangement between the first light source and the resonator. A second circulator is coupled to the waveguide arrangement between the second light source and the resonator. A first rate detector communicates with the resonator through the first circulator, and a second rate detector communicates with the resonator through the second circulator. The rate detectors produce rate measurements based on a detected resonance frequency shift of the beams in the resonator caused by rotation of the gyroscope. Outputs of the rate detectors are used to calculate a rotation rate that is corrected for errors due to a time varying pathlength change in the resonator.

公开(公告)号：US20240271937A1

公开(公告)日：2024-08-15

申请号：US18166792

申请日：2023-02-09

Applicant: Honeywell International Inc.

Inventor： Jianfeng Wu ,  Tiequn Qiu ,  Matthew Wade Puckett

IPC: G01C19/72

CPC classification number: G01C19/727 ,  G01C19/722

Abstract: Techniques are provided for diminishing bias error, in a resonator optical gyroscope, due to an undesired, parasitic optical mode which is orthogonal to a desired optical mode. Energy levels of the undesired, parasitic mode can be diminished utilizing polarizing beam splitters each of which suppresses energy of the undesired, parasitic mode of a clockwise or a counterclockwise optical signal more than energy of the desired mode of the CW optical signal. Optionally, one or more components of a travelling wave resonator system are configured to suppress energy of the undesired, parasitic mode of a clockwise and/or a counterclockwise optical signal more than energy of the desired mode of the respective optical signal(s). Optionally, the desired optical mode is either a transverse magnetic (TM) mode or a transverse electric (TE) mode, and the undesired, parasitic optical mode is respectively the TE mode or the TM mode.

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.