公开(公告)号：US20210172803A1

公开(公告)日：2021-06-10

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

IPC: G01J5/08 ,  G02B6/42 ,  G01J3/12 ,  G01J5/00

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：US20200295740A1

公开(公告)日：2020-09-17

申请号：US16353443

申请日：2019-03-14

Applicant: Honeywell International Inc.

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

IPC: H03K5/1252

Abstract: A system, feedback controller and method are disclosed. For example, the feedback controller includes a phase-sensitive quadrature controller configured to generate a first control signal associated with a controlled signal, a phase-sensitive in-phase controller configured to generate a second control signal associated with the controlled signal, a summer configured to add the first control signal and the second control signal, and a subtractor configured to subtract the summed first and second control signals from an uncontrolled signal.

公开(公告)号：US20200056888A1

公开(公告)日：2020-02-20

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 ,  H01S3/083 ,  H01S3/0941 ,  H01S3/16 ,  H01S3/08 ,  H01S3/0933

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.

公开(公告)号：US10451806B1

公开(公告)日：2019-10-22

申请号：US15996039

申请日：2018-06-01

Applicant: Honeywell International Inc.

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

IPC: G02B6/293

Abstract: An optical frequency comb generator device is disclosed. In one implementation, the optical frequency comb generator device comprises a bus waveguide, at least a first optical ring resonator optically coupled to the bus waveguide, and at least a first grating located on the first optical ring resonator opposite from the bus waveguide. The first optical ring resonator and the first grating are configured to generate counter-propagating optical frequency combs that are offset from each other at a controllable bandwidth.

公开(公告)号：US20190041215A1

公开(公告)日：2019-02-07

申请号：US15668676

申请日：2017-08-03

Applicant: Honeywell International Inc.

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

IPC: G01C19/72 ,  G02B6/02

CPC classification number: G01C19/727 ,  G01C19/722 ,  G01C19/726 ,  G02B6/02328 ,  G02B6/02361 ,  G02F2203/15

Abstract: Systems and methods for reducing polarization-related bias errors in RFOGS are described herein. In certain implementations, an RFOG system includes a fiber optic resonator, one or more laser sources, wherein light from the laser sources launches first and second optical beams into the fiber optic resonator in opposite directions, and an electro-optically tunable devices in the resonator path configured to modulate the phase difference between polarization components in the first and second optical beams as the optical beams propagate within the fiber optic resonator. The system further includes at least one photodetector, wherein the polarization components of the first and second optical beams are incident on the photodetector, wherein the at least one photodetector provides an electrical signal, and at least one processing unit configured to receive the electrical signal and calculate a rotation rate for the RFOG and provide a drive signal for the electro-optically tunable device.

公开(公告)号：US20180120509A1

公开(公告)日：2018-05-03

申请号：US15377689

申请日：2016-12-13

Applicant: Honeywell International Inc.

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

IPC: G02B6/293 ,  G02B6/136 ,  G02B6/132 ,  G02B6/122

CPC classification number: G02B6/29338 ,  G02B6/12007 ,  G02B6/122 ,  G02B6/1228 ,  G02B6/132 ,  G02B6/136 ,  G02B6/29341

Abstract: An optical resonator system is provided. The optical resonator comprises a ring resonator portion; wherein the ring resonator portion is configured to be proximate to an optical waveguide, and to receive a first single mode, optical signal from the optical waveguide; a disc resonator portion adiabatically coupled to the ring resonator portion; and wherein the disc resonator portion is configured to receive a second single mode, optical signal through the adiabatic coupling with ring resonator portion.

公开(公告)号：US09354063B2

公开(公告)日：2016-05-31

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。