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    Conical diffraction grazing incidence spectrometer and diffraction grating for use in the spectrometer
    202.
    发明申请
    Conical diffraction grazing incidence spectrometer and diffraction grating for use in the spectrometer 失效

    公开(公告)号：US20030016355A1

    公开(公告)日：2003-01-23

    申请号：US10191993

    申请日：2002-07-10

    Applicant: Japan Atomic Energy Research Insititute

    Inventor： Masato Koike ,  Kazuo Sano ,  Yoshihisa Harada

    IPC: G01J003/18

    CPC classification number: G02B5/1861 ,  G01J3/18 ,  G01J3/1833 ,  G01J3/189

    Abstract: An x-y coordinate is set on the surface of diffraction grating 3 with non-uniformly spaced grooves and expressed by the following series expansion which is a groove function describing a point (w,l) on the nth groove from the origin: 1 n = 1 null null null i , j null n i null null null j null w i null l j null null null ( i + j null 1 ) The focal length (r0null) and the expansion coefficient nij in this series expansion are so determined that all expanded terms Fij in the following optical path function are zero at a desired wavelength: 2 F = null i , j null F i null null null j null w i null l j = null i , j null [ M i null null null j + ( m null null null null null ) null n i null null null j ] null w i null l j null null null ( i + j > 0 ) the optical path being for the light that passes through entrance slit 1 to be reflected by concave mirror 2 and diffracted at a point (w,l) on the surface of diffraction grating 3 before it reaches exit slit 4. The positions of two point light sources C5 and D6 in a holographic recording system are so determined as to realize the required value of nij.

    Large scale high speed multiplexed optical fiber sensor network
    203.
    发明授权
    Large scale high speed multiplexed optical fiber sensor network 失效
    大规模高速复用光纤传感器网络

    公开(公告)号：US06492636B1

    公开(公告)日：2002-12-10

    申请号：US09463008

    申请日：2000-01-19

    Applicant: Shiping Chen ,  Yiqun Hu

    Inventor： Shiping Chen ,  Yiqun Hu

    IPC: G01N380

    CPC classification number: G02B6/022 ,  G01B11/16 ,  G01D5/35383 ,  G01J3/0294 ,  G01J3/18 ,  G01J3/1895 ,  G02B6/0218

    Abstract: A digital spatial and wavelength domain system for multiplexing fiber Bragg grating sensors comprises: a plurality of optical fibers, each including a plurality of fiber Bragg gratings therein, each fiber Bragg grating having a selective center wavelength that is variable in accordance with strain for reflecting or transmitting light at the corresponding center wavelength in accordance with the strain thereat; means for providing broad band illumination (110) for the fiber Bragg gratings; means for each optical fiber for carrying the light to a selected location; and a wavelength dispersion device (136) responsive to the light from each of the fibers for wavelength separating the light in each fiber into the center wavelengths in accordance with the location of each fiber so that the selected location of each fiber and the wavelength separated light provides spatially independent signals for each fiber Bragg grating in each optical fiber.

    Abstract translation: 用于复用光纤布喇格光栅传感器的数字空间和波长域系统包括：多个光纤，每个光纤中包括多个光纤布拉格光栅，每个光纤布拉格光栅具有根据应变可变的选择性中心波长，用于反射或 在相应的中心波长处发射光; 用于为光纤布拉格光栅提供宽带照明（110）的装置; 用于将光传送到选定位置的每个光纤的装置; 以及响应于来自每个光纤的光的波长分散装置（136），用于根据每个光纤的位置将每个光纤中的光波长分离成中心波长，使得每个光纤的选定位置和波长分离的光 为每个光纤中的每个光纤布拉格光栅提供空间独立的信号。

    Super high resolution optical resonator
    204.
    发明申请
    Super high resolution optical resonator 审中-公开
    超高分辨率光谐振器

    公开(公告)号：US20020135879A1

    公开(公告)日：2002-09-26

    申请号：US09788242

    申请日：2001-02-20

    Inventor： Valdimir Pogrebinsky

    IPC: H01S003/08 ,  G02B027/00

    CPC classification number: G02B27/4233 ,  G01J3/18 ,  G01J3/24 ,  G01J3/26 ,  G02B5/284 ,  G02B6/29317 ,  H01S3/08009

    Abstract: A super high resolution optical resonator comprising a Fabry-Perot cavity and an intracavity diffraction grating which is operated in a non-zero diffraction order. The diffraction grating is of transmission or reflection type, blazed, single or multiple order. The resonant cavity can comprise two independent mirrors, multiple mirrors, or an optical resonator based on an optical fiber and one or more intracavity diffraction gratings operated in non-zero diffraction order inserted between the two or more mirrors or portions of the fiber, respectively. In a preferred embodiment, the diffraction grating is not in contact with one of the mirrors or the optical fiber. In another preferred embodiment, the diffraction grating is in contact with one of the mirrors or the optical fiber. In another preferred embodiment, the diffraction grating is part of one of the mirrors or the optical fiber. The width of the resonance is reduced by more than two orders of magnitude compared to prior art optical resonators and all diffraction orders except one of the diffraction grating are suppressed.

    Abstract translation: 一种超高分辨率光学谐振器，包括法布里 - 珀罗腔和腔内衍射光栅，其以非零衍射级操作。 衍射光栅具有透射或反射型，闪耀，单次或多次。 谐振腔可以分别包括两个独立的反射镜，多个反射镜或基于光纤的光学谐振器和分别以两个或更多个反射镜或光纤部分之间非零衍射级操作的一个或多个腔内衍射光栅。 在优选实施例中，衍射光栅不与反射镜或光纤中的一个接触。 在另一优选实施例中，衍射光栅与反射镜或光纤中的一个接触。 在另一优选实施例中，衍射光栅是反射镜或光纤之一的一部分。 与现有技术的光学谐振器相比，共振的宽度减小了两个数量级，除了衍射光栅之外的所有衍射级都被抑制。

    Thin-film spectrometer with transmission grid
    205.
    发明授权
    Thin-film spectrometer with transmission grid 有权
    带传输网格的薄膜光谱仪

    公开(公告)号：US06452675B1

    公开(公告)日：2002-09-17

    申请号：US09646434

    申请日：2000-09-18

    Applicant: Jörg Müller ,  Dietmar Sander

    Inventor： Jörg Müller ,  Dietmar Sander

    IPC: G01J318

    CPC classification number: G02B6/12007 ,  G01J3/0259 ,  G01J3/18

    Abstract: A spectrometer fitted with a thin light guide layer in a stratification manufactured by thin-film technology, said light guide being sandwiched between two cover layers of lower index of refraction, said layer light guide's end face comprising a grating which is illuminated with the light to be analyzed and passing through the said light guide layer, the spectrometer furthermore comprising a line sensor onto which is imaged the spectrum, the staircase echelon grating being fitted with transparent step surfaces and with step edges perpendicular to said layer's plane, a second medium forming an interface with the grating's step surfaces and having an index of refraction less than that of the light guide layer, characterized in that the height and the width of the grating continuously change in the staircase direction in such manner that for two selected wavelengths the particular total optical paths through the light guide layer and the second medium as far as a focal point pertaining the particular wavelength shall differ by the same multiple of the particular wavelength.

    Abstract translation: 一种在薄膜技术制成的分层中配备有薄导光层的光谱仪，所述光导被夹在两个较低折射率的覆盖层之间，所述层光导的端面包括用光照射的光栅 分析并通过所述导光层，所述光谱仪还包括对其进行成像的线传感器，所述阶梯梯形光栅装配有透明台阶表面，并且具有垂直于所述层的平面的阶梯边缘，形成第二介质的第二介质 与光栅的台阶表面接合并且具有小于导光层的折射率的折射率，其特征在于光栅的高度和宽度在阶梯方向上连续变化，使得对于两个选定的波长，特定的总光学 通过导光层和第二介质的路径，直到与之相关的焦点 特定波长的特定波长的相同倍数将不同。

    Spectrometer arrangement
    207.
    发明申请
    Spectrometer arrangement 失效
    光谱仪布置

    公开(公告)号：US20020075996A1

    公开(公告)日：2002-06-20

    申请号：US09933879

    申请日：2001-08-21

    Inventor： Frank Holler ,  Martin Ross-Messemer ,  Alexander Menck

    IPC: G01T001/36

    CPC classification number: G01J3/20 ,  G01J3/18 ,  G02B5/1828

    Abstract: A spectrometer arrangement is disclosed for the determination of a radiation wavelength of radiation emitted from a radiation source to be measured. The arrangement includes a diffraction grating on which the radiation of the radiation source to be measured is incident at a predetermined angle, wherein the diffraction grating is provided by a reflection grating having a variable lattice constant. The arrangement also includes a radiation detector for receiving from the radiation source to be measured radiation diffracted at a predetermined angle at the diffraction grating.

    Abstract translation: 公开了用于确定从待测量的辐射源发射的辐射的辐射波长的光谱仪布置。 该装置包括衍射光栅，待测量的辐射源的辐射以预定角度入射，其中衍射光栅由具有可变晶格常数的反射光栅提供。 该装置还包括用于从待测辐射源接收辐射检测器，辐射源以衍射光栅以预定角度衍射。

    Monolithic infrared spectrometer apparatus and methods
    210.
    发明授权
    Monolithic infrared spectrometer apparatus and methods 失效
    单片红外光谱仪的设备及方法

    公开(公告)号：US06303934B1

    公开(公告)日：2001-10-16

    申请号：US09058488

    申请日：1998-04-10

    Applicant: James T. Daly ,  Andrew Bodkin ,  Michael J. Groden ,  Edward A. Johnson

    Inventor： James T. Daly ,  Andrew Bodkin ,  Michael J. Groden ,  Edward A. Johnson

    IPC: G01N2100

    CPC classification number: G02B17/086 ,  G01J3/02 ,  G01J3/0208 ,  G01J3/024 ,  G01J3/0259 ,  G01J3/0264 ,  G01J3/0283 ,  G01J3/0286 ,  G01J3/0291 ,  G01J3/10 ,  G01J3/18 ,  G01J3/28 ,  G01J3/2803 ,  G01J3/42 ,  G01J2005/0077 ,  G02B6/29328

    Abstract: A spectrometer system comprises (i) a slab waveguide characterized as an index of refraction higher than a surrounding medium, and having front surface and a rear surface opposite thereto, the front surface including a input portion for accepting optical radiation, a diffractor portion and an exit portion, (ii) a diffraction grating disposed on said diffractor portion of said front surface, (iii) a detector array aligned adjacent to the exit portion, and (iv) a mirror coated on the rear surface of the waveguide. Radiation transmitted within the waveguide from the input portion is reflected and collimated by the mirror to the granting. Light diffracted from the grating is dispersed to the mirror and reflected toward and through the exit portion and onto the array.

    Abstract translation: 光谱仪系统包括（i）平板波导，其特征在于折射率高于周围介质，并且具有与其相对的前表面和后表面，所述前表面包括用于接收光辐射的输入部分，衍射部分和 出口部分，（ii）设置在所述前表面的所述衍射器部分上的衍射光栅，（iii）邻近出口部分排列的检测器阵列，以及（iv）涂覆在波导的后表面上的反射镜。 在波导内从输入部分发射的辐射被镜子反射并准直到授权。 从光栅衍射的光分散到反射镜并朝向并穿过出射部分并且反射到阵列上。

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