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1. 发明授权

US4880288A Integrated optical waveguide, method for its manufacture, and its use in an electro-optical modulator 失效
标题翻译：集成光波导，其制造方法及其在电光调制器中的应用
公开(公告)号：US4880288A
公开(公告)日：1989-11-14
申请号：US189705
申请日：1988-05-03
申请人： Sylvie Vatoux , Michel Papuchon , Herve Lefevre
发明人： Sylvie Vatoux , Michel Papuchon , Herve Lefevre
IPC分类号： G02B6/12 , G02B6/122 , G02F1/03 , G02F1/035 , G02F1/313
CPC分类号： G02F1/3132 , G02B6/122 , G02F1/035 , G02F2201/066 , G02F2202/20 , Y10S117/918
摘要： Disclosed is an integrated optical waveguide. This integrated optical waveguide is obtained by doping a lithium niobate monocrystal simultaneously or in two stages, by a titanium strip, in a manner known per se, to obtain a guiding zone for the optical wave, and by a titanium film of smaller thickness which covers the guiding zone and the lateral zones to preserve a waveguide in the guiding zone and improve the electro-optical behavior of the guide to which an electrical field is applied.
摘要翻译：公开了一种集成光波导。该集成光波导通过以本身已知的方式同时或分两阶段掺杂铌酸锂单晶而获得，以获得光波导向区，以及通过覆盖较小厚度的钛膜引导区域和侧向区域，以在引导区域中保持波导，并改善施加电场的引导件的电光学行为。

2. 发明授权

US5802085A Singlemode laser source tunable in wavelength with a self-aligned external cavity 失效
标题翻译：单模激光源可调谐波长，具有自对准外腔
公开(公告)号：US5802085A
公开(公告)日：1998-09-01
申请号：US748915
申请日：1996-11-13
申请人： Herve Lefevre , Philippe Martin , Bernard LaLoux , Philippe Graindorge , Laurent Disdier
发明人： Herve Lefevre , Philippe Martin , Bernard LaLoux , Philippe Graindorge , Laurent Disdier
IPC分类号： H01S3/081 , H01S3/1055 , H01S5/14 , H01S3/10
CPC分类号： H01S5/143 , H01S3/0812 , H01S3/105 , H01S3/1055 , H01S5/02248
摘要： This invention relates to a singlemode laser source tunable in wavelength with a self-aligned external cavity, comprising: a resonant cavity having an output face that is partially reflecting (331) and a retroreflecting dispersive device (31, 39), defining a main collimating axis (351) and a secondary collimating axis (381), an amplifier wave guide (33) placed in position inside the resonant cavity. The retroreflecting dispersive device comprises a plane diffraction grating (31) having dispersion planes and an orthogonal reflecting dihedral (39) whose line of intersection (391) is parallel to the dispersion plane of the diffraction grating containing the collimating axes (351, 352).
摘要翻译：本发明涉及具有自对准外腔的波长可调谐的单模激光源，包括：谐振腔，其具有部分反射的输出面（331）和回射分散装置（31,39），其限定主准直轴（351）和次准直轴（381），放大器波导（33）放置在谐振腔内。回射分散装置包括具有色散平面的平面衍射光栅（31）和正交反射二面体（39），其交叉线（391）平行于包含准直轴（351,352）的衍射光栅的色散平面。

3. 发明授权

US5712704A Appliance for measuring polarization mode dispersion and corresponding measuring process 失效
标题翻译：用于测量偏振模色散和相应测量过程的设备
公开(公告)号：US5712704A
公开(公告)日：1998-01-27
申请号：US713399
申请日：1996-09-13
申请人： Philippe Martin , Gilles Le Boudec , Edouard Taufflieb , Herve Lefevre
发明人： Philippe Martin , Gilles Le Boudec , Edouard Taufflieb , Herve Lefevre
IPC分类号： G01J4/00 , G01M11/00 , G02B6/10 , G01B9/02
CPC分类号： G01J4/00 , G01M11/331 , G01M11/336 , G02B6/105
摘要： An appliance for measuring polarization mode dispersion (PMD) of a waveguide (2) comprises a source (1, 6) of wide-band polarized light, an interferometer (5) capable of receiving a light beam (21) sent by the source (1, 6), a detector (3) capable of detecting the light beam (25) from the interferometer (5), and an electronic processing unit (4) connected to the detector (3), capable of extracting a value .tau. representative of the polarization mode dispersion of the waveguide (2). The interferometer (5) divides a measuring light beam (22) sent by the source (1) into two interference light beams (23, 24). The measuring appliance comprises at least one birefringent element (17) positioned on the interferometer (5), capable of producing an algebraic difference of relative phase shifts in each of the two interference light beams (23, 24) equal to .pi..
摘要翻译：用于测量波导（2）的偏振模色散（PMD）的装置包括宽带偏振光源（1,6），能够接收由源发送的光束（21）的干涉仪（5） 1，6），能够从干涉仪（5）检测光束（25）的检测器（3）和连接到检测器（3）的电子处理单元（4），能够提取代表波导（2）的偏振模色散。干涉仪（5）将由源（1）发送的测量光束（22）分成两个干涉光束（23,24）。测量仪器包括位于干涉仪（5）上的至少一个双折射元件（17），能够产生等于pi的两个干涉光束（23,24）中的每一个中的相对相移的代数差。

4. 发明授权

US5594744A Singlemode laser source tunable in wavelength with a self-aligned external cavity 失效
标题翻译：单模激光源可调谐波长，具有自对准外腔
公开(公告)号：US5594744A
公开(公告)日：1997-01-14
申请号：US432021
申请日：1995-05-01
申请人： Herve Lefevre , Philippe Martin , Bernard Laloux , Philippe Graindorge , Laurent Disdier
发明人： Herve Lefevre , Philippe Martin , Bernard Laloux , Philippe Graindorge , Laurent Disdier
IPC分类号： H01S3/081 , H01S3/1055 , H01S5/14 , H01S3/10
CPC分类号： H01S5/143 , H01S3/0812 , H01S3/105 , H01S3/1055 , H01S5/02248
摘要： This invention relates to a singlemode laser source tunable in wavelength with a self-aligned external cavity, comprising: a resonant cavity having an output face that is partially reflecting (331) and a retroreflecting dispersive device (31, 39), defining a main collimating axis (351) and a secondary collimating axis (381), an amplifier wave guide (33) placed in position inside the resonant cavity. The retroreflecting dispersive device comprises a plane diffraction grating (31) having dispersion planes and an orthogonal reflecting dihedral (39) whose line of intersection (391)is parallel to the dispersion plane of the diffraction grating containing the collimating axes (351, 352).
摘要翻译：本发明涉及具有自对准外腔的波长可调谐的单模激光源，包括：谐振腔，其具有部分反射的输出面（331）和回射色散装置（31,39），其限定主准直轴（351）和次准直轴（381），放大器波导（33）放置在谐振腔内。回射分散装置包括具有色散平面的平面衍射光栅（31）和正交反射二面体（39），其交叉线（391）平行于包含准直轴（351,352）的衍射光栅的色散平面。

5. 发明授权

US4893931A Method for the detection of polarization couplings in a birefringent optical system and application of this method to the assembling of the components of an optical system 失效
标题翻译：双折射光学系统中偏振耦合检测方法及其应用于组合光学系统
公开(公告)号：US4893931A
公开(公告)日：1990-01-16
申请号：US166492
申请日：1988-03-10
申请人： Herve Lefevre , Jean P. Bettini , Serge Botti
发明人： Herve Lefevre , Jean P. Bettini , Serge Botti
IPC分类号： G01M11/00 , G01M11/02 , G01N21/23 , G01N21/45
CPC分类号： G01M11/331
摘要： A method for the detection of localized polarization couplings in a birefringent guided optical system uses a polarizer, at 45.degree. with respect to the axes of the optical system placed at its output, and followed by a Michelson type interferometer in which one of the optical paths has a variable length. When the length of an optical path undergoes variation, interference fringes appear on half of the energy emitted. The difference in the length of the optical paths when fringes of this type appear characterizes the position of a localized polarization coupling, and the contrast between the fringes measured for this difference in length characterizes the amplitude ratio between the primary wave and the coupled wave. The invention can be applied in particular, to the assembly of the components of a birefringent optical system.
摘要翻译：在双折射引导光学系统中用于检测局部偏振耦合的方法使用偏振器，相对于放置在其输出处的光学系统的轴线为45°，随后为迈克尔逊型干涉仪，其中一条光路具有可变长度。当光路的长度变化时，干扰条纹出现在发射的能量的一半上。当这种条纹的光路长度的差异出现在局部极化耦合的位置上时，对于该长度差测量的条纹之间的对比度表征了主波和耦合波之间的振幅比。本发明可以特别应用于双折射光学系统的部件的组装。

6. 发明授权

US4329056A Optical fiber interferometric rate gyro particularly adapted to the measurement of low rotational speeds 失效
标题翻译：光纤干涉率陀螺仪特别适用于测量低转速
公开(公告)号：US4329056A
公开(公告)日：1982-05-11
申请号：US123483
申请日：1980-02-21
申请人： Michel Lacombat , Herve Lefevre
发明人： Michel Lacombat , Herve Lefevre
IPC分类号： G01C19/72 , G01B9/02
CPC分类号： G01C19/72
摘要： The present patent application discloses an optical fiber interferometric rate gyro using the SAGNAC effect particularly adapted to the measurement of low rotational speeds comprising, between the radiation splitting and recombining device which directs two waves simultaneously towards the two ends of a single mode wound optical fiber and recombines the two waves emerging from the fiber after travelling in opposite directions at each of the two ends of the fiber, a splitter associated with a detector picking up a fraction of the wave emerging from the corresponding end, the speed measurement being obtained from signals from these detectors and from the signal from a detector picking up the radiation resulting from the recombination of both waves.
摘要翻译：本专利申请公开了一种使用SAGNAC效应的光纤干涉率陀螺仪，其特别适用于测量低旋转速度，包括在辐射分离和重组装置之间，其同时朝着单模缠绕光纤的两端引导两个波，在纤维两端各自的相反方向上移动从光纤中出来的两个波，将与检测器相关联的分离器与从相应端出现的波的一部分相结合，速度测量从这些检测器和来自检测器的信号拾取由两个波的复合产生的辐射。

7. 发明授权

US09291458B2 Fiber-optic measurement device, gyrometer, and navigation and inertial-stabilization system 有权
标题翻译：光纤测量装置，陀螺仪，导航和惯性稳定系统
公开(公告)号：US09291458B2
公开(公告)日：2016-03-22
申请号：US14379665
申请日：2013-02-20
申请人： Herve Lefevre , Van-Dong Pham , Joachim Honthaas
发明人： Herve Lefevre , Van-Dong Pham , Joachim Honthaas
IPC分类号： G01C19/72 , G01C19/66 , G01R33/032
CPC分类号： G01C19/665 , G01C19/662 , G01C19/721 , G01C19/726 , G01R33/0322
摘要： A fiber-optic measurement device (10) includes a SAGNAC ring interferometer (20) having a proper frequency fp. The aim is to improve response time while maintaining high precision across the measurement range. Biasing elements (130) are used to produce: a first biasing phase-differential modulation component Δφb1(t) (34) which is periodic in time-slots, having levels +π and −π, at a first biasing modulation frequency fb1 such that fb1=(2k1+1) fp, k1 being a natural number; and a second periodic biasing phase-differential modulation component Δφb2(t) (35), having extreme amplitudes +π/a and −π/a, a being a non-zero real number such that |a|>1, at a second biasing modulation frequency fb2 such that fb2=(2k2+1) fp, k2 being a non-zero natural number such that k2>k1. A gyrometer including such a measurement device and a navigation or inertial-stabilization system including at least one such gyrometer are also described.
摘要翻译：光纤测量装置（10）包括具有适当频率fp的SAGNAC环形干涉仪（20）。目的是提高响应时间，同时在整个测量范围内保持高精度。偏置元件（130）用于产生：在时隙中周期性的第一偏置相位差分调制分量＆Dgr; b1（t）（34），具有电平+ pgr; 和 - ＆pgr，以第一偏置调制频率fb1使得fb1 =（2k1 + 1）fp，k1是自然数; 和具有极值幅度+＆pgr; / a和 - ＆pgr / / a的第二周期性偏置相位差调制分量＆Dgr; b2（t）（35），a是非零实数，使得| a | > 1，在第二偏置调制频率fb2使得fb2 =（2k2 + 1）fp，k2是非零自然数，使得k2> k1。还描述了包括这种测量装置和包括至少一个这种陀螺仪的导航或惯性稳定系统的陀螺仪。

8. 发明授权

US5141316A Optical-fiber measuring device, gyrometer, central navigation and stabilizing system 失效
标题翻译：光纤测量装置，陀螺仪，中央导航和稳定系统
公开(公告)号：US5141316A
公开(公告)日：1992-08-25
申请号：US614113
申请日：1990-11-16
申请人： Herve Lefevre , Philippe Martin
发明人： Herve Lefevre , Philippe Martin
IPC分类号： G01C19/72 , G01R29/08 , G01R33/032 , H01S3/083
CPC分类号： G01C19/726
摘要： The invention relates to a fibre optic measuring device of the type in which the change in a measured parameter generates a phase difference between two waves in a SAGNAC ring interferometer (2). Electronic means (7) comprise a processing system (9) delivering a signal depending on the measured parameter and electronic means (12) controlling the phase modulator (4). The electronic means (12) produce a control signal for the modulator determined in such a way that the phase difference .delta..PHI..sub.m which it produces between the counter-propagating waves periodically takes the following four successive values: ##EQU1## where .PHI..sub.o is a constant phase shift and it depends on a, and a is a positive constant satisfying the condition: cos .PHI..sub.o =cos a.PHI..sub.o. The gain of the channel for controlling the modulation is kept constant by producing a signal depending on the said gain by exploiting the four values x1, x2, x3, x4 delivered in response to a period of the modulation signal according to the expression (x1+x3)-(x2+x4), the said signal acting on the modulator in such a way as to keep the gain constant.
摘要翻译：本发明涉及一种光纤测量装置，其中测量参数的变化在SAGNAC环形干涉仪（2）中产生两个波之间的相位差。电子装置（7）包括处理系统（9），其根据所测量的参数传递信号，以及控制相位调制器（4）的电子装置（12）。电子装置（12）产生用于调制器的控制信号，该控制信号以这样的方式确定，使得它在反向传播波之间产生的相位差ΔPHIm周期性地采取以下四个连续的值：ΔPHI1 = PHI o delta PHI 3 = PHI o delta PHI 2 = - PHI o delta PHI 4 = - PHI o其中PHI o是恒定相移，它取决于a，a是满足条件的正常数：cos PHI o = cos a PHI o。根据表达式（x1 + 1），通过利用响应于调制信号的周期而递送的四个值x1，x2，x3，x4，通过产生取决于所述增益的信号来保持用于控制调制的信道的增益， x3） - （x2 + x4），所述信号以保持增益恒定的方式作用于调制器。

9. 发明授权

US5039220A Optical fiber measuring device, gyrometer, central navigation and stabilizing system 失效
标题翻译：光纤测量装置，陀螺仪，中央导航和稳定系统
公开(公告)号：US5039220A
公开(公告)日：1991-08-13
申请号：US406335
申请日：1989-09-13
申请人： Herve J. Arditty , Philippe Martin , Francois X. Desforge , Phillipe Graindorge , Herve Lefevre
发明人： Herve J. Arditty , Philippe Martin , Francois X. Desforge , Phillipe Graindorge , Herve Lefevre
IPC分类号： E04B2/74 , E04B2/76
CPC分类号： E04B2/76 , E04B2002/7468
摘要： The invention relates to an optical fiber measuring device of the type in which variation of a measured parameter causes a difference of progression of light waves in the optical fiber. Such a device permits measurement of speed of rotation, or of current and magnetic field. The device includes an electronic device for digitally processing a signal indicative of phase shift of one light wave relative to another, the light waves propagating through a preferably monomode optical fiber in a SAGNAC ring interferometer, modulated by a phase modulator. The electronic device includes an analog-digital converter 11, a digital processing system 12 for generating a processor signal reduced to a frequency of modulation around the optical fiber, a control loop digital filter 13 for supplying a parameter indication signal, a register 14 for receiving the parameter indication signal and supplying a register signal which is a function of the measured parameter, an accumulator 15 for generating a digital feedback signal which is a function of the measured parameter, and a digital-analog converter 16 for generating an analog feedback signal for controlling the phase modulator.
摘要翻译：本发明涉及一种光纤测量装置，其中测量参数的变化导致光纤中光波的进行差异。这种装置允许测量旋转速度或电流和磁场。该装置包括用于数字处理指示一个光波相对于另一个光的相移的信号的电子装置，该光通过由相位调制器调制的SAGNAC环形干涉仪中的优选单模光纤传播。电子设备包括模数转换器11，用于产生减少到光纤周围的调制频率的处理器信号的数字处理系统12，用于提供参数指示信号的控制环数字滤波器13，用于接收的寄存器14 参数指示信号并提供作为测量参数的函数的寄存器信号，用于产生作为测量参数的函数的数字反馈信号的累加器15以及用于产生模拟反馈信号的数模转换器16，控制相位调制器。

10. 发明授权

US4815853A Three-axis fiber-optic ring interferometer 失效
标题翻译：三轴光纤环形干涉仪
公开(公告)号：US4815853A
公开(公告)日：1989-03-28
申请号：US105178
申请日：1987-10-05
申请人： Herve Lefevre
发明人： Herve Lefevre
IPC分类号： G01C19/64 , G01C19/72 , G01B9/02
CPC分类号： G01C19/728
摘要： A three-axis fiber-optic interferometer as applicable in particular to a gyrometer comprises three optical fibers forming rings disposed along three different axes. The three optical fibers are fed by a light beam emitted by a single source. A single interference photodetector receives the light beam after transit through the different fibers. Coupling devices couple the second fiber to the first fiber and the third fiber to the second fiber.
摘要翻译：特别适用于陀螺仪的三轴光纤干涉仪包括沿着三个不同轴设置的形成环的三根光纤。三根光纤由单个光源发射的光束进给。单个干涉光电检测器在穿过不同的光纤后接收光束。耦合装置将第二纤维与第一纤维和第三纤维耦合到第二纤维。

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