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1. 发明授权

US5270791A Fibre optic measuring device, rate gyro, stabilization system and magnetic field or current sensor 失效
标题翻译：光纤测量装置，速率陀螺仪，稳定系统和磁场或电流传感器
公开(公告)号：US5270791A
公开(公告)日：1993-12-14
申请号：US699332
申请日：1991-05-13
申请人： Herve Lefevre , Philippe Martin , Pascal Simonpietri
发明人： Herve Lefevre , Philippe Martin , Pascal Simonpietri
IPC分类号： G01C19/72
CPC分类号： G01C19/72
摘要： The invention relates to a fiber optic measuring device in which the variation in a measured parameter engenders a phase difference between two waves. It comprises a SAGNAC ring interferometer (2) in which two counter-propagating waves propagate; a polarization splitter (6) spatially splits the two polarizations which will propagate in the interferometer (2), interferometer (2) comprises a polarization conserving birefringent fiber (7) having two ends having neutral birefringence axes, each of the ends of the polarization conserving fiber (7) being connected to one of the gates (6b) and (6c) of the polarization splitter (6). It comprises a birefringent component, placed ahead of the polarization splitter (6) and introducing a path difference greater than the coherence length of the source (1) between the two polarized waves.
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产生两个波之间的相位差。它包括一个SAGNAC环形干涉仪（2），其中两个反向传播的波传播; 偏振分离器（6）在空间上分裂将在干涉仪（2）中传播的两个偏振光，干涉仪（2）包括具有中立双折射轴的两端的偏振保存双折射光纤（7），偏振光保持的每一端光纤（7）连接到偏振分离器（6）的栅极（6b）和（6c）之一。它包括放置在偏振分离器（6）之前的双折射元件，并引入大于两极化波源（1）的相干长度的路径差。

2. 发明授权

US5719674A Process for measuring rotation speeds about several axes, and a multiplexed multi-axial gyrofiber allowing this measurement 失效
标题翻译：用于测量围绕几个轴的旋转速度的过程，以及允许该测量的多路多轴陀螺仪
公开(公告)号：US5719674A
公开(公告)日：1998-02-17
申请号：US633339
申请日：1996-04-17
申请人： Philippe Martin , Thierry Gaiffe , Joel Morisse , Pascal Simonpietri , Herve Lefevre
发明人： Philippe Martin , Thierry Gaiffe , Joel Morisse , Pascal Simonpietri , Herve Lefevre
IPC分类号： G01C19/72
CPC分类号： G01C19/728
摘要： A process and an optical gyroscope are provided for measuring rotation speeds (S) about N axes. The light source and the photodetector are common. Controlled modulation phase differences .delta..PHI..sub.c,i COMPRISE biasing components .delta..PHI..sub.m,i (42, 45, 46) with a common modulation period T.sub.m and common amplitude. Since each half-period T.sub.m /2 is divided into N time intervals .delta.t.sub.i, a change in the sign of the biasing component .delta..PHI..sub.m,i associated with each interferometer I.sub.i is produced at the beginning of one and only one .delta.t.sub.i time interval. Sagnac phase shifts .delta..PHI..sub.s,i are obtained by sampling a signal on the N time intervals.
摘要翻译：提供了一种用于测量关于N个轴的旋转速度（S）的过程和光学陀螺仪。光源和光电检测器是常见的。受控调制相位差ΔPHIc，i COMPRISE偏置分量δPHI m，i（42,45,46）具有公共调制周期Tm和公共幅度。由于每个半周期Tm / 2被划分成N个时间间隔Δti，所以在每个干涉仪Ii的相关联的偏移分量ΔPHIm i的符号的变化在一个且仅一个Δti时间间隔。 Sagnac相移ΔPHI，i通过在N个时间间隔上采样信号获得。

3. 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。

4. 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。

5. 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。

6. 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。

7. 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。

8. 发明授权

US5886785A Optical spectrum analyzer and process for analyzing the corresponding spectrum 失效
标题翻译：光谱分析仪及相应光谱分析程序
公开(公告)号：US5886785A
公开(公告)日：1999-03-23
申请号：US942612
申请日：1997-10-02
申请人： Herve Lefevre , Philippe Martin , Bertrand Merigot , Bernard Laloux , Denis Mangeot
发明人： Herve Lefevre , Philippe Martin , Bertrand Merigot , Bernard Laloux , Denis Mangeot
IPC分类号： G01J3/18
CPC分类号： G01J3/18
摘要： The invention relates to an optical spectrum analyzer of an incident light beam (101) and a process for analyzing the corresponding spectrum. The spectrum analyzer comprises addressing means (1), a diffraction grating (2), a reflecting dihedron (3), a device (4) for adjusting the rotation of the reflecting dihedron and reception means (5). A polarization separator (11) divides the incident beam (101) into a first and second parallel secondary beam (102, 104), of linearly polarized light along the directions parallel to and perpendicular to the grooves in the grating respectively, and a .lambda./2 plate (12) placed on the path of the first secondary beam (102) applies a perpendicular polarization direction to this beam. The grating diffracts the secondary beams (103, 104) a first time, the reflecting dihedron exchanges their directions, the grating diffracts them a second time, the .lambda./2 plate applies a 90.degree. rotation to the polarization state of the second secondary beam (110) and the separator recombines the secondary beams (109, 111) into a single main beam (112) returned to reception means.
摘要翻译：本发明涉及入射光束（101）的光谱分析仪和用于分析相应光谱的过程。频谱分析仪包括寻址装置（1），衍射光栅（2），反射二面体（3），用于调节反射二面体和接收装置（5）旋转的装置（4）。偏振分离器（11）分别沿着平行于并垂直于光栅中的凹槽的方向将入射光束（101）分成第一和第二平行次光束（102,104），线偏振光分别与λ/ 放置在第一辅助光束（102）的路径上的两个板（12）向该光束施加垂直偏振方向。光栅首次衍射次光束（103,104），反射二面体交换其方向，光栅第二次衍射它们，λ/ 2板向第二次光束的偏振状态施加90度旋转（ 110），并且分离器将次级束（109,111）复合到返回到接收装置的单个主波束（112）中。

9. 发明授权

US5337142A Optical fiber measuring device using phase difference 失效
标题翻译：光纤测量装置采用相位差
公开(公告)号：US5337142A
公开(公告)日：1994-08-09
申请号：US910840
申请日：1992-07-07
申请人： Herve Lefevre , Philippe Martin
发明人： Herve Lefevre , Philippe Martin
IPC分类号： G01C19/72
CPC分类号： G01C19/721
摘要： The invention concerns an optical fiber measuring device, for example a gyrometer. The working of this device is independent of possible variations in the spectrum of the source. It includes a narrow, stable spectral filter which separates the incident flux. The modulation chain is slaved by a first detector (3). A second detector (23) receives the filtered flux. Its response is processed by a device (219) which supplies a signal that is a function of the spectrum of the light source (1).
摘要翻译：本发明涉及一种光纤测量装置，例如陀螺仪。该设备的工作与源的频谱可能的变化无关。它包括一个分离入射通量的窄而稳定的光谱滤波器。调制链由第一检测器（3）分离。第二检测器（23）接收经滤波的通量。其响应由提供作为光源（1）的光谱的函数的信号的装置（219）处理。

10. 发明授权

US5181078A Fiber optic measuring device, rate gyro, navigation and stabilization system, and current sensor 失效
标题翻译：光纤测量设备，速率陀螺仪，导航和稳定系统以及电流传感器
公开(公告)号：US5181078A
公开(公告)日：1993-01-19
申请号：US685682
申请日：1991-04-16
申请人： Herve Lefevre , Philippe Martin
发明人： Herve Lefevre , Philippe Martin
IPC分类号： G01C19/72 , G01R15/24 , G01R33/032
CPC分类号： G01R15/246 , G01C19/726
摘要： A fiber optic measuring device can be used, for example, as a rate gyro. Variation in a measured parameters engenders a phase difference between two waves. The measuring device includes a light source 1, a SAGNAC ring interferometer 2, a detector 3, a phase modulator 4, and a electronic unit 7. The electronic unit 7 includes a processing system 9 which furnishes a signal that is a function of the measured parameter and an electronic sub-unit 12 for controlling the phase modulator 4. The control signal for the modulator is a superposition of a first, periodic gating, bias signal .PHI..sub.b (t) with period 2.tau. and amplitude .PHI..sub.bm, and of a second, staircase, negative-feedback signal .PHI..sub.m (t) synchronized with .PHI..sub.b (t), each step of which has a duration equal to .tau. or to one of its sub-multiples, and an amplitude .PHI..sub.s, which is a function of the value of the measured parameter and which falls back to zero when its amplitude exceeds a predetermined value .PHI..sub.mm . .PHI..sub.bm and .PHI..sub.mm are slaved to 2.PHI..sub.bm +.PHI..sub.mm =2n.pi. (where n is an integer). The response to the singular phase shift introduced during the fall-back of the negative-feedback signal is for this slaving and hence is used to keep the gain of the modulation chain constant.
摘要翻译：光纤测量装置可以用作例如速率陀螺仪。测量参数的变化产生两个波之间的相位差。测量装置包括光源1，SAGNAC环形干涉仪2，检测器3，相位调制器4和电子单元7.电子单元7包括处理系统9，其提供作为被测量的函数的信号参数和用于控制相位调制器4的电子子单元12.调制器的控制信号是第一周期性选通偏置信号PHI b（t）与周期2 tau和振幅PHI bm以及第二，与PHI b（t）同步的阶梯负反馈信号PHI m（t），其每个步骤的持续时间等于τ或其子倍数之一，幅度PHI s是函数的测量参数的值，并且当其幅度超过预定值PHI mm时，该值降至零。 PHI bm和PHI mm从属于2 PHI bm + PHI mm = 2n pi（其中n是整数）。在负反馈信号的倒退期间引入的对奇异相移的响应是针对该从动的，因此用于保持调制链的增益恒定。

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