公开(公告)号：US06614527B2

公开(公告)日：2003-09-02

申请号：US10000635

申请日：2001-11-01

Applicant: Thomas Fuhrmann ,  Klaus Steininger

Inventor： Thomas Fuhrmann ,  Klaus Steininger

IPC: G01J328

CPC classification number: G01J3/02 ,  G01J3/027 ,  G01J3/28

Abstract: In an optical spectrum analyzer, the respective wavelength bandwidths of the optical spectrum analyzer are determined at the wavelengths of the reference lines and used as calibration data for determining measurement tolerances by means of reference lines of known wavelength and known wavelength bandwidths from the known wavelength bandwidths of the reference lines and from the wavelength bandwidths of the reference lines measured with the optical spectrum analyzer

公开(公告)号：US06583873B1

公开(公告)日：2003-06-24

申请号：US09668167

申请日：2000-09-25

Applicant: Alexander F. Goncharov ,  Viktor V. Struzhkin

Inventor： Alexander F. Goncharov ,  Viktor V. Struzhkin

IPC: G01J328

CPC classification number: G01J3/06 ,  G01J3/0227 ,  G01J3/0237 ,  G01J3/18 ,  G01J3/1838 ,  G01J3/44 ,  G02B5/1828 ,  G02B27/1086

Abstract: A spectrometer has a source of illumination radiation having a plurality of spectral wavelengths, a bandpass filter, a dispersive beamsplitter disposed in an optical path of said source of illumination radiation, an illumination radiation rejection filter, and a spectrograph disposed in a path of radiation from a sample illuminated by illumination radiation from said source of illumination radiation. The dispersive beamsplitter, the bandpass filter, the illumination radiation rejection filter and spectrograph are tunable in correspondence to a selected one of the plurality of spectral wavelengths of the source of illumination radiation. The dispersive beamsplitter directs the selected one of the plurality of spectral wavelengths of illumination radiation to a sample and directs elastically scattered and reflected radiation from the sample out of a measurement beam of light emanating from the sample. The inelastically scattered light passes through the dispersive beamsplitter essentially unaffected and is directed to the illumination radiation rejection filter and the spectrograph.

Abstract translation: 光谱仪具有具有多个光谱波长的照射辐射源，带通滤光器，设置在所述照射辐射源的光路中的色散分束器，照明辐射阻挡滤光器和设置在辐射路径中的光谱仪 由来自所述照射辐射源的照射辐射照射的样品。 分散分束器，带通滤光器，照明辐射抑制滤光器和光谱仪可以对应于照明辐射源的多个光谱波长中的选定的一个。 色散分束器将照射辐射的多个光谱波长中的所选择的一个引导到样本，并将来自样品的弹性散射和反射辐射引导出从样品发出的测量光束。 非弹性散射的光通过色散分束器基本上不受影响，并被引导到照明辐射阻挡滤光器和光谱仪。

公开(公告)号：US06570652B1

公开(公告)日：2003-05-27

申请号：US09724604

申请日：2000-11-28

Applicant: Gregory G. Cappiello

Inventor： Gregory G. Cappiello

IPC: G01J328

CPC classification number: H04J14/02 ,  G01J3/02 ,  G01J3/0208 ,  G01J3/0286 ,  G01J3/14 ,  G01J3/18 ,  G01J3/2803 ,  G02B5/18 ,  G02B6/2931 ,  G02B6/29385 ,  G02B6/29398 ,  G02B7/008 ,  G02B7/028 ,  G02B27/1073 ,  G02B27/108 ,  G02B27/1086 ,  G02B27/123 ,  G02B27/126 ,  H04B10/077 ,  H04B10/07955 ,  H04J14/0201 ,  H04J14/0206 ,  H04J14/0217

Abstract: A device for monitoring wavelength division multiplexed optical signals for use in an optical network and in an optical performance monitor. A device has a structure for supporting components of the device. An optical component is supported at one end of the structure for transmitting the optical signals. A diffraction grating is supported at an opposing end of the structure for diffracting the optical signals from the optical component. An optical sensor is supported in relation to the diffraction grating by the structure for monitoring the optical signals. A telephoto lens assembly is supported by the structure and disposed between the optical sensor and the diffraction grating, the lens assembly having a focal length for focusing the optical signals in relation to the optical sensor. Thermal effects on the structure are balanced against thermal effects on the lens assembly. A prism is disposed between the lens assembly and diffraction grating. The prism is configured to anamorphically compress the diffracted optical signals. Thermal effects on the diffraction grating are balanced against thermal effects on the lens and prism.

公开(公告)号：US06549280B2

公开(公告)日：2003-04-15

申请号：US09871538

申请日：2001-05-31

Applicant: Paolinetti Riccardo ,  Pieri Silvano ,  Romoli Andrea

Inventor： Paolinetti Riccardo ,  Pieri Silvano ,  Romoli Andrea

IPC: G01J328

CPC classification number: G02B17/0888 ,  G01J3/02 ,  G01J3/0208 ,  G01J3/0218 ,  G01J3/0243 ,  G01J3/14 ,  G02B19/0028 ,  G02B19/0085

Abstract: The spectrometer comprises, in combination: a slit (1) for the entry of a light beam; a collimator; a dispersion system (9); focusing means and a detector (13). The collimator comprises at least a first concave spherical mirror (3) and at least a first Schmidt plate (5) in an off-axis arrangement.

公开(公告)号：US06525815B2

公开(公告)日：2003-02-25

申请号：US10007796

申请日：2001-11-09

Applicant: Helen L. Kung ,  David A. B. Miller

Inventor： Helen L. Kung ,  David A. B. Miller

IPC: G01J328

CPC classification number: G01J3/02 ,  G01J3/0229 ,  G01J3/0256 ,  G01J3/45 ,  G01J3/453

Abstract: A transform spectrometer determines the spectrum of light based on the Talbot effect. Light to be analyzed is passed through a spatially periodic object, thereby generating a series of Talbot images. The intensities of these Talbot images at different optical distances from the spatially periodic object are then detected, and Fourier transformed to determine the spectrum of the light. Preferably, the detector comprises a spatial masking pattern such that the intensities detected are maximized at Talbot planes or at the midpoints between Talbot planes. In one embodiment, the optical distance between the spatially periodic object and the detector is changed in order to detect image intensities at different Talbot planes. In another embodiment, the detector and the spatially periodic object are positioned along a common optical axis at relative angle &thgr; such that different detector rows detect intensities at different Talbot planes. In yet another embodiment, the spatially periodic object is both a grating and a detector, and the Talbot images generated by the grating are reflected off a mirror back to the detector.

Abstract translation: 变换光谱仪基于Talbot效应确定光谱。 要分析的光通过空间周期的物体，从而产生一系列Talbot图像。 然后检测这些Talbot图像在距离空间周期物体的不同光学距离处的强度，并进行傅里叶变换以确定光谱。 优选地，检测器包括空间掩蔽图案，使得检测到的强度在Talbot平面或Talbot平面之间的中点处最大化。 在一个实施例中，改变空间周期性物体与检测器之间的光学距离，以便检测不同Talbot平面处的图像强度。 在另一个实施例中，检测器和空间周期性物体沿着公共光轴以相对角度θ定位，使得不同的检测器行检测不同Talbot平面处的强度。 在另一个实施例中，空间周期性物体既是光栅又是检测器，并且由光栅产生的Talbot图像被反射回到检测器。

公开(公告)号：US06483583B1

公开(公告)日：2002-11-19

申请号：US09309157

申请日：1999-05-10

Applicant: Steven L. Wright ,  Thomas B. Brumback, Jr. ,  William S. Niebur ,  Roland Welle

Inventor： Steven L. Wright ,  Thomas B. Brumback, Jr. ,  William S. Niebur ,  Roland Welle

IPC: G01J328

CPC classification number: G01N21/359 ,  A01D41/1277 ,  A01D43/085 ,  G01J3/02 ,  G01J3/28 ,  G01J3/2803 ,  G01J3/42 ,  G01J3/50 ,  G01J3/502 ,  G01N21/3563

Abstract: An apparatus and method for utilizing NIR spectrography for measuring major constituents of substances in real time includes a monochromator or other sensor having no moving optical parts. At least one of the monochromator and the substance are moving relative to one another. An NIR radiation source irradiates a substance and the reflected or passed-through radiation is transmitted to the monochromator, which isolates and detects narrow portions of the received spectrum. By analyzing the intensities and wavelengths of the received radiation, the presence and amount of major constituents of the substance can be determined.

Abstract translation: 利用NIR光谱法实时测量物质的主要成分的装置和方法包括单色仪或其他没有移动光学部件的传感器。 至少一个单色器和物质相对于彼此移动。 NIR辐射源照射物质，反射或通过的辐射被传输到单色仪，从而隔离并检测接收光谱的窄部分。 通过分析接收辐射的强度和波长，可以确定物质的主要成分的存在和量。

公开(公告)号：US06396582B1

公开(公告)日：2002-05-28

申请号：US09206526

申请日：1998-12-07

Applicant: Jesse D. Buck ,  Raymond F. Cybulski ,  Peter C. Newman ,  Palash P. Das

Inventor： Jesse D. Buck ,  Raymond F. Cybulski ,  Peter C. Newman ,  Palash P. Das

IPC: G01J328

CPC classification number: H01S3/1303 ,  G01J9/00 ,  G03F7/70025 ,  G03F7/70041 ,  G03F7/70558 ,  G03F7/70575 ,  H01S3/03 ,  H01S3/134 ,  H01S3/1392 ,  H01S3/225

Abstract: The present invention includes a system and method for characterizing the wavelength of a beam of radiation using a known reference transition. The invention comprises a vapor including a material having a transition which absorbs radiation of a known wavelength, the vapor being contained in a container. The container includes an optical path along which the beam of radiation can propagate through the vapor. A dispersive optical element is aligned along the optical path. A detector is aligned along the optical path after the dispersive element. Wavelength information about the beam of radiation is determined from the position of a dip in the detector signal that is correlated to the known reference transition. This method is most useful when the laser bandwidth substantially exceeds the transition bandwidth.

Abstract translation: 本发明包括使用已知参考转变来表征辐射束的波长的系统和方法。 本发明包括一种蒸汽，其包括具有吸收已知波长的辐射的过渡物质，该蒸气被包含在容器中。 容器包括一个光路，辐射束沿着该光路传播通过蒸汽。 色散光学元件沿光路对准。 在分散元件之后，检测器沿光路对齐。 关于辐射束的波长信息根据与已知参考转变相关的检测器信号中的倾角的位置来确定。 当激光带宽基本上超过转换带宽时，该方法是最有用的。

公开(公告)号：US06288836B1

公开(公告)日：2001-09-11

申请号：US09040323

申请日：1998-03-18

Applicant: Yumiko Kawasaki ,  Satoru Okano ,  Kazuo Yamane ,  Hiroshi Nishimoto ,  Takashi Tsuda

Inventor： Yumiko Kawasaki ,  Satoru Okano ,  Kazuo Yamane ,  Hiroshi Nishimoto ,  Takashi Tsuda

IPC: G01J328

CPC classification number: H04B10/2935 ,  H01S3/06754 ,  H01S3/10015 ,  H01S3/1301 ,  H04B10/2912 ,  H04B10/2942

Abstract: The present invention relates to an optical amplifier and an optical communication system applied to WDM (wavelength division multiplexing). The optical amplifier includes an optical amplifying medium to which WDM signal light obtained by wavelength division multiplexing a plurality of optical signals having different wavelengths is supplied, a pumping unit for pumping the optical amplifying medium such that the medium gives a gain to the WDM signal light, a feedback loop for controlling the pumping unit so that the gain is maintained constant, and an optical attenuator for giving a variable attenuation to the WDM signal light. Through the structure of the present invention, it becomes possible to provide an optical amplifier which can maintain constant the optical output level per channel of WDM and can maintain the gain characteristic constant.

Abstract translation: 本发明涉及一种应用于WDM（波分复用）​​的光放大器和光通信系统。 该光放大器包括一个光放大介质，通过波分多路复用多个具有不同波长的光信号获得的WDM信号光，一个泵浦单元，用于泵浦光放大介质，使得介质给予WDM信号光增益 ，用于控制泵送单元以使增益保持恒定的反馈回路，以及用于向WDM信号光提供可变衰减的光衰减器。 通过本发明的结构，可以提供一种能够维持WDM每通道的光输出电平恒定并且可以保持增益特性恒定的光放大器。

公开(公告)号：US06222627B1

公开(公告)日：2001-04-24

申请号：US09256862

申请日：1999-02-24

Applicant: Peter Seitz ,  Martin Stalder

Inventor： Peter Seitz ,  Martin Stalder

IPC: G01J328

CPC classification number: G01J3/453 ,  G02B27/283

Abstract: The present invention is related to a Wollaston prism (WP) comprising two birefringent wedges (W1, W2) joined by their hypotenuse to form a composite block, said wedges having optic axes (OA1, OA2) to each other at right angle. According to the invention, the optic axes (OA1, OA2) of said wedges (W1, W2) are rotated by an angle of 45° or 135°, respectively, with regard to a position wherein one of the optic axes (OA1, OA2) lies parallel to the plane formed by the hypotenuse. In an embodiment of the present invention, liquid crystal is used as material for the wedges (W1, W2) resulting in inexpensive and easy to handle Wollaston prisms.

Abstract translation: 本发明涉及一种瓦拉斯顿棱镜（WP），其包括通过其斜边连接以形成复合块的两个双折射楔（W1，W2），所述楔具有彼此成直角的光轴（OA1，OA2）。 根据本发明，所述楔（W1，W2）的光轴（OA1，OA2）分别相对于其中一个光轴（OA1，OA2）的位置旋转45°或135°的角度 ）平行于由斜边形成的平面。在本发明的实施例中，使用液晶作为楔形（W1，W2）的材料，从而廉价且易于处理Wollaston棱镜。

公开(公告)号：US06813019B2

公开(公告)日：2004-11-02

申请号：US09958458

申请日：2001-10-05

Applicant: Michael R. Hammer ,  Philip V. Wilson ,  Mark R. Williams ,  Dower C. Bricker ,  Martin K. Masters ,  Stewart R. Campbell ,  Peter G. Layton

Inventor： Michael R. Hammer ,  Philip V. Wilson ,  Mark R. Williams ,  Dower C. Bricker ,  Martin K. Masters ,  Stewart R. Campbell ,  Peter G. Layton

IPC: G01J328

CPC classification number: G01J3/36 ,  G01J3/02 ,  G01J3/0213 ,  G01J3/0227 ,  G01J3/0229 ,  G01J3/0232 ,  G01J3/1809 ,  G01J3/2803 ,  G01J5/62 ,  G01J2003/1828 ,  G01N21/27 ,  G01N21/31

Abstract: A method and apparatus for the spectrochemical analysis of a sample in which a solid state array detector (82) is used to detect radiation (62) of spectrochemical interest. The invention involves the use of a shutter (72) adjacent the entrance aperture (70) of a polychromator (74-80) to expose the detector (82) to the radiation (62) for varying lengths of time whereby for short duration exposure times charge accumulation in elements (i.e. pixels) of the detector (82) due to high intensity components of the radiation is limited and for longer exposure times charge accumulation in elements (pixels) of the detector (82) due to feeble intesity components of radiation (62) is increased. This ensures that each reading of the detector (82) includes at least one exposure in which the amount of charge accumulated at each wavelength of interest is neither too little or too great. The problems of feeble radiation components not being accurately measurable and of high intensity radiation components exceeding the charge carrying capacity of elements (pixels) of the detector (82) are thereby able to be avoided. An attenuator (90) may be placed between the radiation source (60) and the detector (82) to permit longer exposure times to be used for very high intensity radiation.

Abstract translation: 用于对样品进行光谱化学分析的方法和装置，其中固态阵列检测器（82）用于检测分光光度的辐射（62）。 本发明涉及使用与多色调剂（74-80）的入口孔（70）相邻的快门（72）将检测器（82）暴露于辐射（62）以改变长度的时间，从而短时间曝光时间 由于辐射的高强度分量，检测器（82）的元件（即，像素）中的电荷累积受到限制，并且由于辐射的微弱的肥胖分量，对于更长的曝光时间来检测器（82）的元件（像素）中的电荷累积 62）增加。 这确保了检测器（82）的每次读取包括至少一次曝光，其中在每个感兴趣波长处累积的电荷量既不太小也不太大。 因此能够避免无法精确测量的微弱辐射成分和超过检测器（82）的元件（像素）的电荷承载能力的高强度辐射成分的问题。 衰减器（90）可以放置在辐射源（60）和检测器（82）之间，以允许更长的曝光时间用于非常高强度的辐射。