公开(公告)号：US07864321B2

公开(公告)日：2011-01-04

申请号：US11757584

申请日：2007-06-04

申请人： Serge Caron ,  Lia Mouslinkina ,  Claude Pare ,  André Fougeres

发明人： Serge Caron ,  Lia Mouslinkina ,  Claude Pare ,  André Fougeres

IPC分类号： G01N15/06

CPC分类号： G01N21/7703 ,  G01N2021/7716 ,  G01N2021/7759

摘要： There is provided an evanescent wave multimode optical waveguide sensitive to a chemical species or to a physical parameter. The optical waveguide comprises a core and a cladding having a cladding refractive index lower than that of the core for guiding light to be propagated in the optical waveguide. The cladding defines with the core an optical waveguide providing mode coupling. A chemical indicator is provided in the cladding for causing a variation of the optical absorption of the cladding as a function of the chemical species or the physical parameter. The cladding is interrogated by the evanescent wave of the propagated light. The mode coupling causes unabsorbed light power to be redistributed among the multiple modes while light propagates along the optical waveguide.

摘要翻译： 提供了对化学物质或物理参数敏感的ev逝波多模光波导。 光波导包括芯和包层，其包层折射率低于用于引导在光波导中传播的光的芯的包层折射率。 包层用芯提供了提供模式耦合的光波导。 在包层中提供化学指示剂，以使包层的光吸收变化作为化学物质或物理参数的函数。 包层被传播光的ev逝波所询问。 当光沿光波导传播时，模式耦合导致多个模式之间重新分布未吸收的光功率。

公开(公告)号：US20080297799A1

公开(公告)日：2008-12-04

申请号：US11757584

申请日：2007-06-04

申请人： Serge Caron ,  Lia Mouslinkina ,  Claude Pare ,  Andre Fougeres

发明人： Serge Caron ,  Lia Mouslinkina ,  Claude Pare ,  Andre Fougeres

IPC分类号： G01N21/00 ,  G02B6/00

CPC分类号： G01N21/7703 ,  G01N2021/7716 ,  G01N2021/7759

摘要： There is provided an evanescent wave multimode optical waveguide sensitive to a chemical species or to a physical parameter. The optical waveguide comprises a core and a cladding having a cladding refractive index lower than that of the core for guiding light to be propagated in the optical waveguide. The cladding defines with the core an optical waveguide providing mode coupling. A chemical indicator is provided in the cladding for causing a variation of the optical absorption of the cladding as a function of the chemical species or the physical parameter. The cladding is interrogated by the evanescent wave of the propagated light. The mode coupling causes unabsorbed light power to be redistributed among the multiple modes while light propagates along the optical waveguide.

摘要翻译： 提供了对化学物质或物理参数敏感的ev逝波多模光波导。 光波导包括芯和包层，其包层折射率低于用于引导在光波导中传播的光的芯的包层折射率。 包层用芯提供了提供模式耦合的光波导。 在包层中提供化学指示剂，以使包层的光吸收变化作为化学物质或物理参数的函数。 包层被传播光的ev逝波所询问。 当光沿光波导传播时，模式耦合导致多个模式之间重新分布未吸收的光功率。

公开(公告)号：US08574920B2

公开(公告)日：2013-11-05

申请号：US13182974

申请日：2011-07-14

申请人： Serge Caron ,  Claude Pare

发明人： Serge Caron ,  Claude Pare

IPC分类号： G01N21/00 ,  G01N30/02 ,  G02B6/00 ,  G01N7/00

CPC分类号： G01N30/74 ,  G01N21/0303 ,  G01N21/05 ,  G01N21/21 ,  G01N2021/0346 ,  G01N2030/746

摘要： An optical fiber polarimetric chemical sensor for capillary gas chromatography in which a sample fluid is injected into a capillary in the form of a periodic pulse train. Each individual pulse defines a moving polarization coupling zone that affects the polarization state of the light propagating in a birefringent optical waveguide that includes the capillary. The spacing between consecutive coupling zones can be made equal to the polarization beat length of the waveguide when the injection frequency of the pulses is properly selected, thus defining a resonance condition for a given analyte. The contributions of the successive coupling zones present along the length of the capillary then add up in phase, thus resulting in a detected optical signal having an enhanced amplitude peak at the injection frequency. In this manner, the sensitivity can be enhanced.

摘要翻译： 一种用于毛细管气相色谱的光纤偏振化学传感器，其中将样品流体以周期性脉冲串的形式注入到毛细管中。 每个单独的脉冲限定影响在包括毛细管的双折射光波导中传播的光的偏振态的移动极化耦合区。 当脉冲的注入频率被适当选择时，连续耦合区之间的间距可以等于波导的极化波长长度，从而为给定的分析物定义共振条件。 沿着毛细管长度存在的连续耦合区的贡献随同时相加，从而导致检测到的光信号在注入频率处具有增强的振幅峰值。 以这种方式，可以提高灵敏度。

公开(公告)号：US08120774B2

公开(公告)日：2012-02-21

申请号：US12952313

申请日：2010-11-23

申请人： Andre Fougeres ,  Liya Muslinkina ,  Claude Pare ,  Serge Caron

发明人： Andre Fougeres ,  Liya Muslinkina ,  Claude Pare ,  Serge Caron

IPC分类号： G01N15/06

CPC分类号： G01N21/7703 ,  G01N2021/7716 ,  G01N2021/7759

摘要： There is provided an evanescent wave multimode optical waveguide sensitive to a chemical species or to a physical parameter. The optical waveguide comprises a core and a cladding having a cladding refractive index lower than that of the core for guiding light to be propagated in the optical waveguide. The cladding defines with the core an optical waveguide providing mode coupling. A chemical indicator is provided in the cladding for causing a variation of the optical absorption of the cladding as a function of the chemical species or the physical parameter. The cladding is interrogated by the evanescent wave of the propagated light. The mode coupling causes unabsorbed light power to be redistributed among the multiple modes while light propagates along the optical waveguide.

摘要翻译： 提供了对化学物质或物理参数敏感的ev逝波多模光波导。 光波导包括芯和包层，其包层折射率低于用于引导在光波导中传播的光的芯的包层折射率。 包层用芯提供了提供模式耦合的光波导。 在包层中提供化学指示剂，以使包层的光吸收变化作为化学物质或物理参数的函数。 包层被传播光的ev逝波所询问。 当光沿光波导传播时，模式耦合导致多个模式之间重新分布未吸收的光功率。

公开(公告)号：US20070269174A1

公开(公告)日：2007-11-22

申请号：US11437034

申请日：2006-05-19

申请人： Serge Caron ,  Claude Pare ,  Bruno Bourliaguet

发明人： Serge Caron ,  Claude Pare ,  Bruno Bourliaguet

IPC分类号： G02B6/04

CPC分类号： G01D5/35303 ,  G01N21/21 ,  G01N21/23 ,  G01N21/45 ,  G01N2021/458

摘要： The invention relates to distributed optical waveguide polarimetric chemical analysis. Real-time monitoring of a separation process of a fluid in a capillary column is provided using a distributed sensor comprising a birefringent optical waveguide placed between two polarizers. The optical waveguide has a longitudinal channel defined by a channel surface in its cladding and adapted to receive the fluid such that it travels in said longitudinal channel. The longitudinal channel is positioned with respect to the core such that channel surface absorption of the fluid traveling in the longitudinal channel causes a local variation of the orientation of the polarization axes of the optical waveguide. The proposed embodiment can be used for monitoring the velocity of the separated components along the channel.

摘要翻译： 本发明涉及分布式光波导偏振化学分析。 使用包括放置在两个偏振器之间的双折射光波导的分布式传感器来提供毛细管柱中的流体的分离过程的实时监测。 光波导具有由其包层中的通道表面限定的并且适于接收流体使得其在所述纵向通道中行进的纵向通道。 纵向通道相对于芯定位，使得在纵向通道中行进的流体的通道表面吸收导致光波导的偏振轴的取向的局部变化。 所提出的实施例可用于监测沿着通道的分离的部件的速度。

公开(公告)号：US5255283A

公开(公告)日：1993-10-19

申请号：US906358

申请日：1992-06-30

申请人： Pierre-Andre Belanger ,  Claude Pare ,  Richard L. Lachance ,  Richard Van Neste

发明人： Pierre-Andre Belanger ,  Claude Pare ,  Richard L. Lachance ,  Richard Van Neste

IPC分类号： H01S3/10 ,  H01S3/08

CPC分类号： H01S3/10076

摘要： A process for making a custom phase-conjugated circular mirror to be used in a laser resonator that will suit specifications of a user is provided. The mirror reverses wavefront of one particular input beam .PSI..sub.o (x) determined by the user, the input beam .PSI..sub.o (x) having a given wavelength, the laser resonator including the mirror and an output coupler cooperating with the mirror and separated therefrom by a laser gain medium, the mirror being at a distance L from the output coupler. The process comprises steps of (a) determining the input beam .PSI..sub.o (x) that will suit need of the user; (b) calculating equation of .PSI..sub.L (x) which is a value of the input beam .PSI..sub.o (x) that is propagated through said laser gain medium at distance L; (c) calculating phase .PHI..sub.o (x) of the input beam, which is a phase of the input beam .PSI..sub.o (x) at distance L, the phase .PHI..sub.o (x) determining profile of the custom phase-conjugated mirror; and (d) fabricating the custom phase-conjugated mirror according to the profile determined in step (c), whereby a custom phase-conjugated mirror can be provided to suit the specifications of the user. There is also provided a mirror made according to the above-mentioned method.

摘要翻译： 提供了一种用于激光谐振器中使用的适合用户规格的定制相位共轭圆形反射镜的方法。 反射镜反转由用户确定的一个特定输入光束PSI o（x）的波前，具有给定波长的输入光束PSI o（x），激光谐振器包括反射镜和与反射镜配合的输出耦合器，并通过 激光增益介质，反射镜距输出耦合器距离L。 该过程包括以下步骤：（a）确定适合用户需要的输入光束PSI o（x）; （b）计算作为距离L通过所述激光增益介质传播的输入光束PSI o（x）的值的PSI L（x）的方程式; （c）计算输入光束的相位PHI o（x），其为距离L处的输入光束PSI o（x）的相位，定影相位共轭反射镜的相位PHI o（x）确定轮廓; 和（d）根据步骤（c）中确定的轮廓制造定制的相位共轭反射镜，由此可以提供符合用户规格的定制相位共轭反射镜。 还提供了根据上述方法制成的镜子。

公开(公告)号：US5587786A

公开(公告)日：1996-12-24

申请号：US393572

申请日：1995-02-23

申请人： Yves Champagne ,  Claude Pare ,  Pierre-Andre Belanger

发明人： Yves Champagne ,  Claude Pare ,  Pierre-Andre Belanger

IPC分类号： G01J1/42 ,  G01J1/00

CPC分类号： G01J1/4257

摘要： The present invention relates to an apparatus and a method upon which the apparatus is based for direct optical measurement of first and second moments (variance) of two-dimensional continuous-wave optical beam irradiance distributions. The apparatus and method are based on an optical filter having a spatially-varying transmittance or reflectance profile described by a one-dimensional truncated parabolic function. The light power transmitted through or reflected by the optical filter is measured by a photodetector as the optical filter travels horizontally across the beam irradiance profile. The variance is obtained from the ratio of the peak signal given by the photodetector normalized to the signal corresponding to the total optical power of the unobstructed optical beam. The first moment in a fixed reference frame is given by the horizontal position of the region of peak transmittance/reflectance of the filter when the maximum signal is measured.

摘要翻译： 本发明涉及一种装置和方法，在该装置和方法上，该装置基于用于直接光学测量二维连续波光束辐照度分布的第一和第二矩（方差）。 该装置和方法基于具有通过一维截断抛物线函数描述的空间变化的透射率或反射率分布的滤光器。 通过光学滤波器透射或反射的光功率由光电检测器测量，因为光学滤光器水平地穿过光束辐照度轮廓。 从由光电检测器给出的峰值信号的比率获得的方差是对应于无阻碍光束的总光功率的信号进行归一化。 当测量最大信号时，固定参考系中的第一时刻由滤波器的峰值透射率/反射率的区域的水平位置给出。

公开(公告)号：US20110291025A1

公开(公告)日：2011-12-01

申请号：US12936609

申请日：2010-04-13

申请人： Michel Fortin ,  Alain Chandonnet ,  Claude Pare

发明人： Michel Fortin ,  Alain Chandonnet ,  Claude Pare

IPC分类号： G01N21/64 ,  G01N21/00 ,  G01N15/10

CPC分类号： G01N21/645 ,  G01N15/1436 ,  G01N15/1459 ,  G01N21/51 ,  G01N21/6428 ,  G01N2015/1006 ,  G01N2021/4707 ,  G01N2021/4726 ,  G01N2021/6421 ,  G01N2021/6439 ,  G01N2021/6441 ,  G01N2021/6482 ,  G01N2021/6484

摘要： An apparatus and method for analyzing a fluid with particle analytes, where the fluid is fed through a passageway within an optical fiber and excitation light is guided by the optical fiber across the passageway and intersects the fluid therein. The optical core is made multimode and is adapted to shape the excitation light with a uniform spatial illumination over a cross-section of the optical core and the passageway is configured relative to the optical core such that the particle analytes are exposed to substantially equal excitation light while circulating in the passageway.

摘要翻译： 一种用于分析具有颗粒分析物的流体的装置和方法，其中流体通过光纤内的通道进给，并且激发光由光纤引导通过通道并与其中的流体相交。 光芯被制成多模并且适于在光学核心的横截面上以均匀的空间照明来形成激发光，并且该通道相对于光学核心构造，使得颗粒分析物暴露于基本相等的激发光 同时在通道中循环。

公开(公告)号：US20090181842A1

公开(公告)日：2009-07-16

申请号：US12350571

申请日：2009-01-08

申请人： Antoine Proulx ,  Steeve Morency ,  Claude Pare

发明人： Antoine Proulx ,  Steeve Morency ,  Claude Pare

IPC分类号： C03C13/04 ,  C03B37/028

CPC分类号： C03B37/01217 ,  C03B2203/31 ,  G02B6/024

摘要： A method for manufacturing a polarization-maintaining optical fiber is provided. The method includes (a) making a fiber preform by providing in an over-cladding tube: a core rod having an inner core and a cladding surrounding the inner core; at least one stress-applying part (SAP) disposed adjacent to the core rod along an outer periphery of the cladding thereof and having a coefficient of thermal expansion different from that of the cladding; inner filler rods arranged along the outer periphery of the core rod at positions where the SAP is not disposed and having a coefficient of thermal expansion different from that of the SAP; and a plurality of outer filler rods arranged adjacent the over-cladding tube between the over-cladding tube and inner filler rods, SAP and core rod, and consisting of a same material as the over-cladding tube; and (b) drawing the fiber preform to obtain the optical fiber.

摘要翻译： 提供一种制造偏振保持光纤的方法。 该方法包括：（a）通过在外包层管中设置纤维预成型件：具有内芯和围绕内芯的包层的芯棒; 至少一个应力施加部分（SAP），沿其包层的外周设置在所述芯棒附近，并且具有与所述包层不同的热膨胀系数; 内填料杆沿着芯棒的外周排列在SAP未被设置并且具有不同于SAP的热膨胀系数的位置; 以及多个外填充棒，其布置在外包层管和内填充棒SAP和芯棒之间的外包层管附近，并由与外包层管相同的材料构成; 和（b）拉伸纤维预制件以获得光纤。

公开(公告)号：US08731358B2

公开(公告)日：2014-05-20

申请号：US12812757

申请日：2008-01-17

申请人： Claude Pare ,  Pierre Laperle ,  Huimin Zheng ,  Andre Croteau

发明人： Claude Pare ,  Pierre Laperle ,  Huimin Zheng ,  Andre Croteau

IPC分类号： G02B6/36 ,  G02B6/02 ,  G02B6/036

CPC分类号： G02B6/02023 ,  G02B6/03644 ,  G02B6/03661 ,  H01S3/06729

摘要： Multi-cladding optical fibers to be used in the context of fiber amplifiers and fiber lasers are described herein. Embodiments of optical fibers include a rare-earth doped core into which the signal field is to be amplified. The doped core is surrounded by multiple claddings that guide the pump field to be absorbed by the reactive core material. The first cladding has a depressed refractive index to improve high-order mode bending losses without incurring significant fundamental mode bending losses.

摘要翻译： 本文描述了在光纤放大器和光纤激光器的上下文中使用的多包层光纤。 光纤的实施例包括要放大信号场的稀土掺杂核。 掺杂的核心由多个包层引导，引导泵浦场被活性芯材料吸收。 第一包层具有低折射率，以改善高阶模弯曲损耗，而不会引起明显的基模弯曲损耗。