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1.发明申请公开(公告)号：US20110122417A1
公开(公告)日：2011-05-26
申请号：US13055685
申请日：2009-06-25
IPC分类号： G01B9/02
CPC分类号： G01D5/268 , G01D5/35367
摘要： A sensor is used to measure a physical quantity and includes at least: a measurement optical fiber including at least one Bragg grating; optical means designed to inject, into the fiber, a first, “pump” wave at a first optical frequency and a second, “probe” wave at a second optical frequency, the second optical frequency being different from the first optical frequency, the Bragg grating being designed to reflect the first and second optical waves, and the optical power of the first wave being sufficient to give, after interaction with the second wave reflected by stimulated Brillouin scattering, a “Stokes” wave, the frequency of which is representative of the physical quantity to be measured; and means for analyzing the difference in frequency between the two, “pump” and “Stokes”, optical waves. The sensor may notably be used as a hydrophone.
摘要翻译： 传感器用于测量物理量并且至少包括：包括至少一个布拉格光栅的测量光纤; 光学装置被设计成以第一光频率在第一光频和第二“探针”波将第一“泵”波注入到光纤中，第二光频与第一光频不同，布拉格 光栅被设计为反射第一和第二光波，并且第一波的光焦度足以在与被受激布里渊散射反射的第二波相互作用之后给出“斯托克斯”波，其频率代表 要测量的物理量; 以及用于分析两个“泵”和“斯托克斯”光波之间的频率差的装置。 传感器可以特别用作水听器。
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公开(公告)号：US08290316B2
公开(公告)日：2012-10-16
申请号：US12933057
申请日：2009-03-16
申请人： Stéphanie Molin , Daniel Dolfi , Jean-Pierre Huignard , Martine Doisy , Loïc Morvan , Jean-Paul Pocholle
发明人： Stéphanie Molin , Daniel Dolfi , Jean-Pierre Huignard , Martine Doisy , Loïc Morvan , Jean-Paul Pocholle
CPC分类号： G01D5/35303 , G01L1/246 , H01S3/0007 , H01S3/06712 , H01S3/0675 , H01S3/0809 , H01S3/10 , H01S3/1053 , H01S3/1067
摘要： The general field of the invention is that of fiber-optic sensors comprising at least one measurement optical fiber having an optically pumped doped amplifying medium, the optical characteristics of which are sensitive to a physical quantity, the fiber having at least one Bragg grating. The fiber is designed so as to generate, in the amplifying medium, two optical waves having different optical frequencies that propagate in the same direction after reflection on the Bragg grating and are emitted by the amplifying medium, the two optical frequencies depending on the physical quantity. The two waves may be generated using either a birefringent polarization-maintaining fiber or a DBR (Distributed Bragg Reflector) laser cavity. Notably, this sensor may be used as a hydrophone.
摘要翻译： 本发明的一般领域是包括具有光泵浦掺杂放大介质的至少一个测量光纤的光纤传感器，其光学特性对物理量敏感，所述光纤具有至少一个布拉格光栅。 光纤被设计成在放大媒体中产生具有不同光频率的两个光波，它们在布拉格光栅反射之后在相同的方向上传播并被放大介质发射，两个光学频率取决于物理量 。 可以使用双折射偏振保持光纤或DBR（分布式布拉格反射器）激光器腔来产生两个波。 值得注意的是，该传感器可以用作水听器。
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公开(公告)号：US20110019179A1
公开(公告)日：2011-01-27
申请号：US12933057
申请日：2009-03-16
申请人： Stephanie Molin , Daniel Dolfi , Jean-Pierre Huignard , Martine Doisy , Loic Morvan , Jean-Paul Pocholle
发明人： Stephanie Molin , Daniel Dolfi , Jean-Pierre Huignard , Martine Doisy , Loic Morvan , Jean-Paul Pocholle
CPC分类号： G01D5/35303 , G01L1/246 , H01S3/0007 , H01S3/06712 , H01S3/0675 , H01S3/0809 , H01S3/10 , H01S3/1053 , H01S3/1067
摘要： The general field of the invention is that of fiber-optic sensors comprising at least one measurement optical fiber having an optically pumped doped amplifying medium, the optical characteristics of which are sensitive to a physical quantity, the fiber having at least one Bragg grating. The fiber is designed so as to generate, in the amplifying medium, two optical waves having different optical frequencies that propagate in the same direction after reflection on the Bragg grating and are emitted by the amplifying medium, the two optical frequencies depending on the physical quantity. The two waves may be generated using either a birefringent polarization-maintaining fiber or a DBR (Distributed Bragg Reflector) laser cavity. Notably, this sensor may be used as a hydrophone.
摘要翻译： 本发明的一般领域是包括具有光泵浦掺杂放大介质的至少一个测量光纤的光纤传感器，其光学特性对物理量敏感，所述光纤具有至少一个布拉格光栅。 光纤被设计成在放大媒体中产生具有不同光频率的两个光波，它们在布拉格光栅反射之后在相同的方向上传播并被放大介质发射，两个光学频率取决于物理量 。 可以使用双折射偏振保持光纤或DBR（分布式布拉格反射器）激光器腔来产生两个波。 值得注意的是，该传感器可以用作水听器。
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公开(公告)号：US5375131A
公开(公告)日：1994-12-20
申请号：US37552
申请日：1993-03-24
CPC分类号： H01S3/305 , H01S2301/20 , H01S3/08063 , H01S3/08068
摘要： A laser includes a gas enclosure placed in an optical cavity and receiving a pump beam to generate at least one first-order and one second-order Stokes wave. One of the mirrors of the cavity is transparent to wavelengths which are higher than the first-order Stokes wave.
摘要翻译： 激光器包括放置在光学腔中并接收泵浦光束以产生至少一个一阶和一个二阶斯托克斯波的气体外壳。 腔的一个反射镜对于高于一阶斯托克斯波的波长是透明的。
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公开(公告)号：US5222093A
公开(公告)日：1993-06-22
申请号：US620031
申请日：1990-11-30
CPC分类号： H01S3/305 , H01S2301/20 , H01S3/08063 , H01S3/08068
摘要： A laser having a glass enclosure placed in an optical cavity receives a pump beam and generates at least one first-order and one second-order Stokes wave. The construction is such that an optical waveguide placed in the gas enclosure is used to select the first and the second-order Stokes wave.
摘要翻译： 具有放置在光腔中的玻璃外壳的激光器接收泵浦光束并且产生至少一个一阶和一个二阶斯托克斯波。 该结构使得放置在气体外壳中的光波导用于选择第一和第二阶斯托克斯波。
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公开(公告)号：US5123025A
公开(公告)日：1992-06-16
申请号：US620026
申请日：1990-11-30
IPC分类号： H01S3/06 , H01S3/094 , H01S3/0941 , H01S3/109 , H01S3/16
CPC分类号： H01S3/16 , H01S3/09415 , H01S3/109 , H01S3/0604 , H01S3/0627 , H01S3/1095 , H01S3/1666
摘要： A miniature optical source which includes at least one thin film of active laser materials having, in addition, non-linear properties. A pump laser for emitting a beam of a wavelength allowing for the pumping of the thin film of active laser material perpendicularly to the plane of the thin film. Also, an optical cavity constituted by two mirrors whose coefficients of reflection are maximum at the laser wavelength of the active laser material is further provided. The miniature optical source may find particular application in a physically compact laser emitting in the visible spectrum.
摘要翻译： 一种微型光源，其包括至少一种活性激光材料薄膜，此外还具有非线性特性。 一种泵浦激光器，用于发射允许激活激光材料薄膜垂直于薄膜平面的波长的波长的光束。 此外，还提供了由在激光激光材料的激光波长处的反射系数最大的两个反射镜构成的光学腔。 微型光源可以在可见光谱中发射的物理紧凑型激光器中发现。
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公开(公告)号：US20050141900A1
公开(公告)日：2005-06-30
申请号：US10498904
申请日：2002-12-10
申请人： Jean-Paul Pocholle , Daniel Dolfi , Carlo Sirtori
发明人： Jean-Paul Pocholle , Daniel Dolfi , Carlo Sirtori
IPC分类号： H04B10/112 , G01B9/02 , H04B10/04
CPC分类号： H04B10/1121
摘要： The present invention relates to a system for optical transmission in free propagation mode of one digital data signal in the atmosphere, with autocompensation of the turbulence effects. It applies especially to optical telecommunications. According to the invention, the system comprises light emission means and optoelectronic detection means suitable for detection around one given non-zero detection frequency. The emission means simultaneously emit, for each signal to be transmitted, two light waves at least one of said waves being intensity-modulated by said signal. Detection then takes place at a detection frequency equal to the difference between said frequencies of the light waves emitted.
摘要翻译： 本发明涉及一种用于大气中一个数字数据信号的自由传播模式的光传输系统，具有湍流效应的自动补偿。 它特别适用于光通信。 根据本发明，该系统包括适于在一个给定的非零检测频率周围检测的光发射装置和光电检测装置。 发射装置对于要发射的每个信号同时发射两个光波，所述波中的至少一个被所述信号强度调制。 然后以与发射的光波的所述频率之间的差等于的检测频率进行检测。
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公开(公告)号：US10014647B2
公开(公告)日：2018-07-03
申请号：US12935084
申请日：2009-03-27
IPC分类号： H01S3/067
CPC分类号： H01S3/06745 , H01S3/06737
摘要： The invention relates a power fiber laser system including at least one single-mode fiber laser, emitting at a signal wavelength, the fiber including at least one outer cladding and a core, in which the core of the fiber has a radially graded index. The fiber includes, at least over a part of its length, a geometrical section having a graded fiber-core radius that decreases between an input end of the section and an output end of the section, the core radius and the index variation between the cladding and the fiber at the input end being such that the normalized frequency at the signal wavelength is less than the normalized cutoff frequency at which the fiber becomes unimodal.
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公开(公告)号：US20090116031A1
公开(公告)日：2009-05-07
申请号：US12097367
申请日：2006-12-07
申请人： Sylvain Schwartz , Gilles Feugnet , Jean-Paul Pocholle , Augustin Mignot , Bastien Steinhausser
发明人： Sylvain Schwartz , Gilles Feugnet , Jean-Paul Pocholle , Augustin Mignot , Bastien Steinhausser
CPC分类号： G01C19/66
摘要： The field of the invention is that of solid-state laser gyros used in inertial control units. However, there are certain technical difficulties in producing laser gyros of this type that are due partly to the fact that the counterpropagating waves interfere with each other in the amplifying medium. A laser gyro according to the invention comprises at least one solid-state amplifying medium and an optical ring cavity comprising first optical means for imposing a first linear polarization state common to the two counterpropagating optical waves at the entrance and exit of the zone containing the amplifying medium and second optical means for imposing, within the amplifying medium, a second linear polarization state on the first optical wave and a third linear polarization state on the second optical wave, these polarization states being perpendicular. Thus, all the drawbacks associated with interference are eliminated.
摘要翻译： 本发明的领域是用于惯性控制单元的固体激光陀螺仪。 然而，在制造这种类型的激光陀螺仪方面存在某些技术上的困难，部分原因是反向传播波在放大介质中彼此干扰。 根据本发明的激光陀螺仪包括至少一个固态放大介质和光环腔，其包括第一光学装置，用于在包含放大器的区域的入口和出口处施加与两个反向传播光波共同的第一线性极化状态 中等和第二光学装置，用于在放大介质内施加第一光波上的第二线性偏振状态和第二光波上的第三线偏振状态，这些偏振状态是垂直的。 因此，消除了与干扰相关联的所有缺陷。
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公开(公告)号：US07474406B2
公开(公告)日：2009-01-06
申请号：US10582629
申请日：2004-11-23
IPC分类号： G01C19/64
摘要： The field of the invention is that of solid-state laser gyros. One of the major inherent problems in this technology is that the optical emission of this type of laser is by nature highly unstable in terms of power. To reduce this instability, the invention proposes to introduce, into the cavity, optical gains controlled by the installation of an optical assembly comprising an anisotropic lasing medium, a first optical element and a second optical element exhibiting a nonreciprocal effect, each acting on the polarization of the counterpropagating optical modes, at least one of these two effects being variable, thus making it possible to introduce controlled optical gains that depend on the propagation direction of the counterpropagating optical modes. Several devices are described and employ either fixed effects of the element that are combined with variable nonreciprocal effects, or the reverse. These devices apply in particular to monolithic-cavity lasers.
摘要翻译： 本发明的领域是固体激光陀螺仪的领域。 该技术的主要固有问题之一是这种类型的激光器的光发射本质上在功率方面非常不稳定。 为了减少这种不稳定性，本发明提出通过安装包括各向异性激光介质，第一光学元件和第二光学元件的光学组件控制的光学增益，所述光学组件具有非相互作用，各自作用于极化 的相反传播光模式中，这两个效果中的至少一个效果是可变的，从而使得可以引入取决于反向传播光学模式的传播方向的受控光学增益。 描述了几个装置，并且采用与可变非互逆效应组合的元件的固定效应，或者相反。 这些器件特别适用于单片腔激光器。
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