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    • 41. 发明授权
    • Tunable external cavity semiconductor laser incorporating a tunable bragg grating
    • 结合可调谐布拉格光栅的可调谐外腔半导体激光器
    • US06470036B1
    • 2002-10-22
    • US09705326
    • 2000-11-03
    • Timothy J. BaileyRobert N. BrucatoMichael A. DavisAlan D. KerseyMartin A. PutnamPaul E. SandersJames S. Sirkis
    • Timothy J. BaileyRobert N. BrucatoMichael A. DavisAlan D. KerseyMartin A. PutnamPaul E. SandersJames S. Sirkis
    • H01S310
    • H01S5/141H01S3/1053H01S3/1055H01S5/02248
    • A tunable external cavity semiconductor laser incorporating a tunable Bragg grating, including: a semiconductor gain medium; an elongated tuner housing having a tuner housing head and having a tuner housing foot, the tuner housing head and tuner housing foot being rigidly connected; a span of waveguide having a Bragg grating, for receiving the source light and for providing in turn the reflected light, and having a waveguide head and a waveguide foot, the waveguide head abutting the tuner housing head and the waveguide foot disposed toward the tuner housing foot; a piezoelectric crystal or other device or arrangement for providing a compressive force, disposed so as to abut the waveguide foot and also to abut the tuner housing foot, the means for applying a compressive force for exerting a compressive force on the span of waveguide along the direction of the axis of the span of waveguide, the compressive force being sufficient to alter the grating so as to affect the wavelength of light reflected by the grating. In some applications, the waveguide includes sections of different thicknesses, each having a sampled grating, the two sampled gratings being created so that at any given compressive force exerted by the piezoelectric crystal, the two gratings reflect at most one wavelength in common. The tunable laser in such an application therefore behaves as a stepped tunable laser.
    • 一种包含可调谐布拉格光栅的可调谐外腔半导体激光器,包括:半导体增益介质; 具有调谐器壳体头部并且具有调谐器壳体脚的细长调谐器壳体,调谐器壳体头部和调谐器壳体脚刚性连接; 具有布拉格光栅的波导的跨距,用于接收源光并反过来提供反射光,并具有波导头和波导脚,波导头邻近调谐器壳体头部和朝向调谐器壳体设置的波导脚 脚丫子; 用于提供压缩力的压电晶体或其它装置或装置,其设置成邻接波导脚并且还抵靠调谐器壳体脚,用于施加压缩力以在波导跨度上施加压缩力的装置沿着 波导跨距的方向,压缩力足以改变光栅,以便影响由光栅反射的光的波长。 在一些应用中,波导包括不同厚度的部分,每个具有采样的光栅,两个采样的光栅被创建,使得在由压电晶体施加的任何给定的压缩力下,两个光栅共同反射至多一个波长。 因此,在这种应用中的可调谐激光器作为阶梯式可调谐激光器。
    • 42. 发明授权
    • Tunable optical structure featuring feedback control
    • 具有反馈控制的可调光学结构
    • US06310990B1
    • 2001-10-30
    • US09519802
    • 2000-03-06
    • Martin A. PutnamRobert N. BrucatoMichael A. DavisDavid G. BellemoreWalter A. Helm
    • Martin A. PutnamRobert N. BrucatoMichael A. DavisDavid G. BellemoreWalter A. Helm
    • G02B600
    • G02B6/022G01D5/35316G01D5/35377G01L1/246G02F1/011
    • A tunable optical device has a compression tuned optical structure and a displacement sensor. The compression tuned optical structure responds to an optical signal, and further responds to a displacement sensor signal, for providing a compression tuned optical structure signal containing information about a change in an optical characteristic of the compression tuned optical structure, and for also further providing an excitation caused by a change in a displacement of the compression tuned optical structure. The displacement sensor responds to the excitation, for providing a displacement sensor signal containing information about the change in the displacement of the compression tuned optical structure. The compression tuned optical structure may be in the form of a dogbone structure that is an all-glass compression unit having wider end portions separated by a narrower intermediate portion. The displacement sensor includes a capacitance sensor affixed to the compression tuned optical structure for measuring a change in capacitance between two parallel and opposing plates that depends on a change in a gap or an area with respect to the two parallel and opposing plates.
    • 可调谐光学器件具有压缩调谐光学结构和位移传感器。 压缩调谐光学结构响应光信号,并进一步响应位移传感器信号,用于提供包含关于压缩调谐光学结构的光学特性的变化的信息的压缩调谐光学结构信号,并且还进一步提供 由压缩调谐光学结构的位移的变化引起的激励。 位移传感器响应于激励,用于提供包含关于压缩调谐光学结构的位移变化的信息的位移传感器信号。 压缩调谐光学结构可以是狗骨架结构的形式,其是具有由较窄中间部分分开的较宽端部的全玻璃压缩单元。 位移传感器包括固定到压缩调谐光学结构上的电容传感器,用于测量取决于相对于两个平行和相对的板的间隙或面积的变化的两个平行板和相对板之间的电容变化。
    • 43. 发明授权
    • Method and apparatus for forming a tube-encased bragg grating
    • 用于形成管状布拉格光栅的方法和装置
    • US06298184B1
    • 2001-10-02
    • US09205845
    • 1998-12-04
    • Martin A. PutnamTimothy J. BaileyMatthew B. MillerJames M. SullivanMark R. FernaldMichael A. DavisChristopher J. Wright
    • Martin A. PutnamTimothy J. BaileyMatthew B. MillerJames M. SullivanMark R. FernaldMichael A. DavisChristopher J. Wright
    • G02B634
    • G02B6/02133G02B2006/02161
    • A method and apparatus for forming a tube-encased fiber grating includes an optical fiber 28 which is encased within and fused to at least a portion of a glass capillary tube 120 and a substantially transparent index-matching medium 122, such as an optically flat window, having an optically flat surface 126 adjacent to the tube 120. A substantially transparent index-matching intermediate material (e.g., UV transparent oil) 124 is used between the window 22 and the tube 120 to substantially eliminate the interface between the tube 120 and the medium 122. A pair of writing beams 26,34 are incident on and pass through the medium 122, the tube 120 and intersect and interfere in a region 30 on the fiber 28. Also, the width Wb of the writing beams 26,34 may be set to be less than the width Woil of the intermediate material 124 to eliminate surface damage (ablations) of the tube 120. Attentively, the medium 122 may have a geometry to eliminate surface ablations (e.g., a collar shape) and/or to match the shape of the tube 120. More than one grating or pair of gratings may be written in the tube-encased fiber or one or more gratings may be formed in multiple fibers 28,250 encased in the tube 120. Further, high intensity writing beams 26,34 on the fiber 28 may be achieved by having the medium 122 have a predetermined thickness T.
    • 用于形成管封装光纤光栅的方法和装置包括:光纤28,其被包裹在玻璃毛细管120和基本上透明的折射率匹配介质122的至少一部分内并且熔合到光纤平面窗口 具有与管120相邻的光学平坦表面126.在窗口22和管120之间使用基本上透明的折射率匹配中间材料(例如,UV透明油)124,以基本上消除管120和管120之间的界面 介质122.一对写入光束26,34入射并穿过介质122,管120并且交叉并干涉光纤28上的区域30.而且,写入光束26,34的宽度Wb可以 被设定为小于中间材料124的宽度Wo,以消除管120的表面损伤(消融)。注意地,介质122可以具有几何形状以消除表面消融(例如,套环形状)和/或t o匹配管120的形状。可以将多于一个的光栅或一对光栅写入管封装的光纤中,或者一个或多个光栅可以形成在封装在管120中的多个光纤28,250中。此外,高强度写入光束 26,34可以通过使介质122具有预定厚度T来实现。
    • 44. 发明授权
    • Optical spectrometer with improved geometry and data processing for monitoring fiber optic bragg gratings
    • 具有改进的几何形状和数据处理用于监测光纤布拉格光栅的光谱仪
    • US06233373B1
    • 2001-05-15
    • US09337159
    • 1999-06-21
    • Charles G. AskinsMartin A. Putnam
    • Charles G. AskinsMartin A. Putnam
    • G02B602
    • G01J3/02G01J3/021G01J3/18G01J3/1895G01J3/2803G02B6/2932
    • An aspect of the present invention is an optical spectrometer for detecting a spectral signature of a input optical signal, including: (a) a collimating lens having an optical axis and focal plane, for collimating the input optical signal; (b) an input optical system, for directing the input optical signal to the collimating lens; (c) a diffraction grating, for scattering the collimated input optical signal, positioned in the path of collimated light from the collimating lens, oriented to reflect a majority of the scattered light through the collimating lens; and (d) a detector, in a focal plane of the collimating lens. Another aspect of the invention is a fiber-based sensing system using the optical spectrometer of the invention. Such a system will include (a) an optical fiber having an array of fiber Bragg gratings, where each of the gratings is reflective at a selected wavelength; (b) a light source, for radiating light at each of the selected wavelengths, optically coupled to the optical fiber; and (c) the optical spectrometer of the invention, optically coupled to the optical fiber, for detecting a spectral signature of reflected light from the fiber Bragg gratings. Typically, the spectrometer output will be fed to a data capturing system, and subsequently to a data analysis system, which may combined in a single computer system for control, data capture.
    • 本发明的一个方面是用于检测输入光信号的光谱特征的光谱仪,包括:(a)具有光轴和焦平面的准直透镜,用于准直输入光信号; (b)用于将输入光信号引导到准直透镜的输入光学系统; (c)衍射光栅,用于散射位于来自准直透镜的准直光的路径中的准直输入光信号,其被定向成反射大部分散射光通过准直透镜; 和(d)在准直透镜的焦平面中的检测器。 本发明的另一方面是使用本发明的光谱仪的基于光纤的感测系统。 这样的系统将包括(a)具有光纤布拉格光栅阵列的光纤,其中每个光栅以选定的波长反射; (b)光源,用于在每个所选择的波长处照射光,光耦合到光纤; 和(c)光学耦合到光纤的本发明的光谱仪,用于检测来自光纤布拉格光栅的反射光的光谱特征。 通常,光谱仪输出将被馈送到数据捕获系统,然后被馈送到数据分析系统,其可以组合在单个计算机系统中用于控制,数据捕获。
    • 47. 发明授权
    • Method and apparatus for performing assays
    • 用于进行测定的方法和装置
    • US09229001B2
    • 2016-01-05
    • US13511593
    • 2010-11-23
    • Martin A. PutnamAlan D. Kersey
    • Martin A. PutnamAlan D. Kersey
    • G01N33/543B01L3/00G01N35/10
    • G01N33/54366B01L3/502715B01L3/502784B01L3/527B01L2200/10B01L2300/0636B01L2400/0633G01N35/1097
    • An apparatus is provided for performing an chemical, biochemical, or biological assay on a sample comprising: a microfluidic assay cartridge (1) that contains at least one sample inlet well (2) configured to receive a sample; and a microfluidic sub-unit (3) associated with the microfluidic assay cartridge (1) and comprising microfluidic channels (8), micro-valves (4, 4a, 9) and at least one separate and fluidicly-isolated isolation channel (5), and at least one hollow element (14); the at least one hollow element (14) being functionalized with a capture moiety or molecules (15) so as to form at least one reaction vessel (19); the microfluidic channels (8) and micro-valves (4, 4a, 9) configured to respond to signaling containing information about performing the assay and to controllably receive the sample and at least one reagent in the at least one reaction vessel (19), and to provide from the at least one reaction vessel (19) light containing information about the assay performed on the sample inside the at least one reaction vessel (19) as a result of said at least one reagent.
    • 提供了一种用于对样品进行化学,生化或生物测定的装置,包括:微流体测定盒(1),其包含至少一个被配置为接收样品的样品入口孔(2) 和与微流体测定盒(1)相关联并且包括微流体通道(8),微阀(4,4a,9)和至少一个单独和流体隔离的隔离通道(5)的微流体子单元(3) ,和至少一个中空元件(14); 所述至少一个中空元件(14)被捕获部分或分子(15)功能化,以形成至少一个反应容器(19); 微流体通道(8)和微阀(4,4a,9)被配置为对包含关于进行测定的信息的信号进行响应并且可控制地接收样品和至少一个反应容器(19)中的至少一个试剂, 并且从所述至少一个反应容器(19)提供含有关于由所述至少一种试剂的结果对所述至少一个反应容器(19)内的样品进行的测定的信息的光。