公开(公告)号：WO1998022779A2

公开(公告)日：1998-05-28

申请号：PCT/US1997019260

申请日：1997-10-27

Applicant: HONEYWELL INC.

Inventor： HONEYWELL INC. ,  STRANDJORD, Lee, K. ,  SANDERS, Glen, A. ,  SZAFRANIEC, Bogdan ,  BERGH, Ralph, A.

IPC: G01C19/00

CPC classification number: G01C19/72

Abstract: A backscatter or secondary wave error reducer for an interferometric fiber optic gyroscope having at least one phase modulator for receiving a square wave bias phase modulation signal and a sine wave carrier suppression modulation signal. The amplitude of the carrier suppression modulation signal is sufficient to greatly reduce the interference between two sets of backscattered or secondary waves of light originating in the Sagnac loop of the gyroscope. Reduction or elimination of the interference of the two sets of secondary waves reduces or eliminates the secondary wave induced rotation rate sensing error. The frequency of the carrier suppression signal is near or equal to an even harmonic of the proper frequency of the Sagnac loop to reduce the simusoidal or periodic rotation rate sensing error caused by the carrier suppression modulation signal.

Abstract translation: 一种用于干涉光纤陀螺仪的后向散射或二次波衰减器，具有至少一个用于接收方波偏置相位调制信号和正弦波载波抑制调制信号的相位调制器。 载波抑制调制信号的幅度足以大大减少源自陀螺仪的Sagnac回路的两组反向散射光或二次波之间的干扰。 减少或消除两组二次波的干扰减少或消除二次波感应的旋转速率感测误差。 载波抑制信号的频率接近或等于Sagnac回路的适当频率的偶次谐波，以减少由载波抑制调制信号引起的同步或周期性转速检测误差。

公开(公告)号：WO1995033183A1

公开(公告)日：1995-12-07

申请号：PCT/US1995006892

申请日：1995-05-31

Applicant: HONEYWELL, INC.

Inventor： HONEYWELL, INC. ,  AUGUST, Richard, J. ,  DIMOND, Kevin, B. ,  FETH, John, R. ,  LASKOSKIE, Clarence, E. ,  STRANDJORD, Lee, K. ,  SZAFRANIEC, Bogdan

IPC: G01C19/72

CPC classification number: G01C19/722 ,  G01C19/72 ,  G02B6/4457 ,  G02F1/0134

Abstract: In a fiber optic rotation sensor, a portion of the coiled optical fiber is a part of and affected by a bias optical phase modulator which causes a varying phase relationship between the light waves at a fundamental frequency. However, the varying phase relationship has at least one harmonic which is due to mechanical vibration of the optical fiber that is a part of the modulator. This harmonic contributes to an erroneous indication of rotation. The amplitude of such harmonic is reduced by lowering the Q of the resonating fiber. This is effected by applying a damping material to the optical fiber and a portion of the modulator. A photodetector detects the counter-propagating waves and sends a corresponding electrical signal on to a signal component selection device that provides an indication of sensed rotation, including error due to the mechanically resonating optical fiber of the modulator.

Abstract translation: 在光纤旋转传感器中，卷绕的光纤的一部分是偏置光相位调制器的一部分并受其影响，该偏置光相位调制器引起基频的光波之间的变化的相位关系。 然而，变化的相位关系具有至少一个谐波，其归因于作为调制器的一部分的光纤的机械振动。 这种谐波有助于错误的旋转指示。 通过降低谐振光纤的Q来减小这种谐波的振幅。 这通过将阻尼材料施加到光纤和调制器的一部分来实现。 光电检测器检测反向传播波，并将相应的电信号发送到信号分量选择装置，信号分量选择装置提供感测旋转的指示，包括由调制器的机械谐振光纤引起的误差。

公开(公告)号：WO1996041131A1

公开(公告)日：1996-12-19

申请号：PCT/US1996008675

申请日：1996-06-04

Applicant: HONEYWELL INC. ,  BERGH, Ralph, A.

Inventor： HONEYWELL INC. ,  SZAFRANIEC, Bogdan

IPC: G01C19/72

CPC classification number: G01C19/721

Abstract: A fiber optic gyroscope having at least one forty-five degree splice connected to a polarization maintaining sensing coil. The splice is an alignment of forty-five or so degrees between a major axis of a state of polarization of light or an axis of birefringence at a port of a splitter/combiner, which may be an IOC or a coupler, and an axis of birefringence at an end of a fiber of a fiber optic coil loop. The gyroscope is rendered significantly more insensitive to ambient magnetic fields which cause non-rotation errors in the gyroscope's indication of rotation of its sensing loop or coil. The polarization amplitude errors of the present depolarized gyroscope are no greater than those of a similar but non-depolarized gyroscope. The present gyroscope may use an integrated optic circuit or an optical fiber coupler for splitting the light into two beams that counterpropagate in the sensing coil, for combining the beams when they exit the sensing coil. Two forty-five degree splices are placed at each end of the coil thereby resulting in depolarized light beams in the coil. The gyroscope may be either an open loop or a closed loop configuration.

Abstract translation: 具有连接到偏振保持感测线圈的至少四十五度接头的光纤陀螺仪。 接合是在分光器/组合器的端口（可以是IOC或耦合器）的光的偏振态的长轴或双折射轴之间的四十五度的对准，以及 在光纤线圈环的纤维端部的双折射。 陀螺仪对环境磁场显着更敏感，这导致陀螺仪对其感测回路或线圈旋转指示的非旋转误差。 目前去极化陀螺仪的极化振幅误差不大于类似但非去极化陀螺仪的极化振幅误差。 本陀螺仪可以使用集成光学电路或光纤耦合器将光分成在感测线圈中相反传播的两个光束，用于当光束离开感测线圈时组合。 在线圈的每个端部放置两个45度接头，从而在线圈中产生去极化的光束。 陀螺仪可以是开环或闭环配置。

公开(公告)号：WO1994018525A2

公开(公告)日：1994-08-18

申请号：PCT/US1994001494

申请日：1994-02-14

Applicant: HONEYWELL INC.

Inventor： HONEYWELL INC. ,  BLAKE, James, N. ,  LASKOSKIE, Clarence, E. ,  SZAFRANIEC, Bogdan

IPC: G01C19/72

CPC classification number: G02B6/2843 ,  G01C19/721 ,  G02B6/126 ,  G02B2006/1218 ,  H01S5/0687

Abstract: A spectrum stabilizer for stabilizing with respect to wavelength an emission spectrum of electromagnetic waves emitted by a source for insertion into a selected optical system where the source can have that emission spectrum shifted over wavelength by varying one or more source parameters, and electromagnetic waves from a selected point in the optical system are coupled to a double mode waveguide means for wavelength sensing.

Abstract translation: 一种频谱稳定器，用于相对于波长稳定由源发射的电磁波的发射光谱，用于插入到所选择的光学系统中，其中源可以通过改变一个或多个源参数而使该发射光谱在波长上移动，以及来自 光学系统中的选定点被耦合到用于波长感测的双模式波导装置。

公开(公告)号：WO1993014379A1

公开(公告)日：1993-07-22

申请号：PCT/US1993000717

申请日：1993-01-15

Applicant: HONEYWELL INC.

Inventor： HONEYWELL INC. ,  SZAFRANIEC, Bogdan ,  FRISCHE, Richard, H. ,  AUGUST, Richard, J. ,  DIMOND, Kevin, B. ,  ANG, Dick ,  BLAKE, James, N. ,  FETH, John, R.

IPC: G01C19/72

CPC classification number: G01C19/72

Abstract: An error control arrangement for an optical fiber rotation sensor having electromagnetic waves propagating in opposite directions passing through a bias optical phase modulator (19) operated by a phase modulation generator (20) both of which can contribute second harmonic distortion resulting in errors in the sensor output signal which are controlled. Control of the bias optical phase modulator (19) contribution for a modulator having a piezoelectric body (30) wrapped with an optical fiber portion (40) is accomplished by mounting the body between layers (33, 35) having nonlinear stiffness.

公开(公告)号：WO1993024807A1

公开(公告)日：1993-12-09

申请号：PCT/US1993005168

申请日：1993-05-28

Applicant: HONEYWELL INC.

Inventor： HONEYWELL INC. ,  BLAKE, James, N. ,  FETH, John, R. ,  SZAFRANIEC, Bogdan

IPC: G01C19/72

CPC classification number: G01C19/721

Abstract: An optical fiber rotation sensor having an ordinary single mode fiber coil (10) with a depolarizer (10') in series therewith configured with component optical path lengths therein and birefringent axes relationships therein chosen with respect to the source autocorrelation. Amplitude related phase errors due to polarization mode coupling can be eliminated or reduced economically, and signal fading can be substantially prevented.

Abstract translation: 一种具有普通单模光纤线圈（10）的光纤旋转传感器，其具有与其中的分量光路长度串联的去偏振器（10'），并且相对于源自相关选择双折射轴关系。 由于偏振模耦合引起的振幅相关误差可以经济地消除或降低，并且可以显着地防止信号衰落。

公开(公告)号：EP1144951A1

公开(公告)日：2001-10-17

申请号：EP99969607.3

申请日：1999-12-02

Applicant: Honeywell Inc.

Inventor： KALISZEK, Andrew, W. ,  SZAFRANIEC, Bogdan ,  LANGE, Charles, H. ,  SUMMERS, Edward

IPC: G01C19/72 ,  G02B6/44

CPC classification number: G01C19/721 ,  G02B6/4457

Abstract: A design for an environmentally robust fiber depolarizer (10) for a fiber optic gyroscope (1) is disclosed. The design comprises: substantially a clockwise propagating leg (20.1) and a counterclockwise propagating leg (20.2), distally coupled at opposite ends of a gyroscope sensing coil (100), said depolarizer fiber legs, (20.1 and 20.2), wound in a that is rotation insensitive pattern (32) and that is also a symmetrical winding pattern (31). Moreover, axial, radial and embedded sensing coil (100) mounting methods for the fiber depolarizer (10) to reduce the depolarizer sensitivity to thermal variations are also disclosed. Specific attention to the design of the fiber depolarizer (10) of a gyroscope (1) provides enhanced immunity to the stress of environmental variation.

公开(公告)号：EP0763188B1

公开(公告)日：2001-09-26

申请号：EP95923679.5

申请日：1995-05-31

Applicant: HONEYWELL INC.

Inventor： AUGUST, Richard, J. ,  DIMOND, Kevin, B. ,  FETH, John, R. ,  LASKOSKIE, Clarence, E. ,  STRANDJORD, Lee, K. ,  SZAFRANIEC, Bogdan

IPC: G01C19/72 ,  G02B6/44

CPC classification number: G01C19/722 ,  G01C19/72 ,  G02B6/4457 ,  G02F1/0134

公开(公告)号：EP1149271A1

公开(公告)日：2001-10-31

申请号：EP99962730.0

申请日：1999-11-09

Applicant: Honeywell Inc.

Inventor： SZAFRANIEC, Bogdan ,  BLAKE, James, N. ,  LANGE, Charles, H. ,  STRANDJORD, Lee, K.

IPC: G01C19/72

CPC classification number: G01C19/721

Abstract: A fiber optic gyroscope having polarization error-correcting modulation. Polarization errors originate from the interference of primary waves and secondary cross-coupled waves. Although these error signals are very difficult to remove modulation signals may be applied to the integrated optics chip that minimize the total error over a period of time. By providing distinct but inter-related modulation signals to opposing inputs of the sensing coil, the various polarization errors can be averaged to zero over the period of the modulation signals.

公开(公告)号：EP0683889A1

公开(公告)日：1995-11-29

申请号：EP94908759.0

申请日：1994-02-14

Applicant: HONEYWELL INC.

Inventor： BLAKE, James, N. ,  LASKOSKIE, Clarence, E. ,  SZAFRANIEC, Bogdan

IPC: G01C19 ,  G01J9 ,  G02B6

CPC classification number: G02B6/2843 ,  G01C19/721 ,  G02B6/126 ,  G02B2006/1218 ,  H01S5/0687

Abstract: A spectrum stabilizer for stabilizing with respect to wavelength an emission spectrum of electromagnetic waves emitted by a source for insertion into a selected optical system where the source can have that emission spectrum shifted over wavelength by varying one or more source parameters, and electromagnetic waves from a selected point in the optical system are coupled to a double mode waveguide means for wavelength sensing.

Abstract translation: 一种频谱稳定器，用于相对于波长稳定由源发射的电磁波的发射光谱以插入到所选择的光学系统中，其中源可以具有通过改变一个或多个源参数来改变波长的发射光谱，并且来自 光学系统中的选定点被耦合到用于波长感测的双模式波导装置。