公开(公告)号：WO2010105684A1

公开(公告)日：2010-09-23

申请号：PCT/EP2009/053247

申请日：2009-03-19

Applicant: AGILENT TECHNOLOGIES, INC. ,  NEBENDAHL, Bernd

Inventor： NEBENDAHL, Bernd

IPC: H04B10/148

CPC classification number: H04B10/614 ,  H04B10/60

Abstract: An apparatus for calibrating an optical downconverter (20) configured to receive an optical input signal (30) at a signal input (40) and an optical reference signal (LO) at a reference input (50), and to provide at a plurality of output nodes (R1 -R4) a plurality of characterizing signals (R1 -R4) for characterizing the optical input signal (30). The downconverter comprises a plurality of receivers (280A-280D), each having at least one optical input and providing at one of the plurality of output nodes an electrical signal, wherein each respective electrical signal is one of the plurality of characterizing signals, a plurality of optical signal paths (70, 295A, 100, 295B, 140, 295C) between the signal input and each input (200-270) of the plurality of receivers, a plurality of optical signal paths (80, 296A, 130, 296B, 190, 170, 296C) between the reference input and each input of the plurality of receivers, and at least one phase shifter (180, 190) coupled in one of the plurality of optical signal paths and being configured to provide a phase shift between its input and its output. The apparatus comprises a signal analyzing unit (290) coupled to the plurality of output nodes to receive and analyze the plurality of characterizing signals, a first switch for selectively enabling or disabling the input signal, and a second switch for selectively enabling or disabling the reference signal. The signal analyzing unit is configured to derive correction values based on determined signals at the plurality of output nodes derived from selectively enabling or disabling at least one of the input signal and the reference signal. The signal analyzing unit is configured for correcting the plurality of characterizing signals with the derived correction values.

Abstract translation: 一种用于校准光学下变频器（20）的装置，被配置为在参考输入（50）处接收信号输入（40）和光参考信号（LO）的光输入信号（30），并且提供多个 输出节点（R1〜R4），用于表征光输入信号（30）的多个表征信号（R1〜R4）。 下变频器包括多个接收器（280A-280D），每个接收器具有至少一个光输入并在多个输出节点中的一个输出节点处提供电信号，其中每个相应的电信号是多个表征信号之一，多个 在多个接收器的信号输入和每个输入（200-270）之间的光信号路径（70,295A，100,295B，140,295C）中的多个光信号路径（80,296A，130,296,2C） 190,170,296），以及耦合在所述多个光信号路径中的一个中的至少一个移相器（180,190），并被配置为在所述多个光信号路径之间提供相移 输入及其输出。 该装置包括耦合到多个输出节点的信号分析单元（290）以接收和分析多个表征信号，用于选择性地启用或禁用输入信号的第一开关和用于选择性地启用或禁用参考的第二开关 信号。 信号分析单元被配置为基于从选择性地启用或禁用输入信号和参考信号中的至少一个导出的多个输出节点处的确定的信号导出校正值。 信号分析单元被配置为用导出的校正值来校正多个表征信号。

公开(公告)号：WO2007022796A1

公开(公告)日：2007-03-01

申请号：PCT/EP2005/054169

申请日：2005-08-24

Applicant: AGILENT TECHNOLOGIES, INC. ,  NEBENDAHL, Bernd

Inventor： NEBENDAHL, Bernd

IPC: G02B6/28

CPC classification number: G02B6/29352 ,  G02B6/2746 ,  G02B6/278 ,  G02B6/2861 ,  G02B6/29353 ,  G02B6/29376 ,  H01S3/06791 ,  H01S5/1071 ,  H01S5/146

Abstract: The invention relates to a polarization maintaining optical delay circuit (1) for providing a time delay to an incident light (Sl), comprising an optical directional element (11) adapted for directing an incident light (Sl) from a first port (111) to a second port (112) and directing a returning light from the second port to a third port (113), a mirror element (12) adapted for reflecting the incident light (Sl), thereby changing the polarization state, so that the returning light (S2) has a substantially orthogonal polarization state compared to the polarization state of the incident light (Sl) , and an optical waveguide (13) adapted for optically connecting the second port (112) of the optical directional element (11) and the mirror element (12). The invention also relates to a ring cavity (2,3) comprising such an optical delay circuit, and an optical interferometer (4,5) with said optical delay circuit.

Abstract translation: 本发明涉及一种用于向入射光（S1）提供时间延迟的偏振保持光延迟电路（1），包括适于从第一端口（111）引导入射光（S1）的光学方向元件（11） 到第二端口（112）并且将来自第二端口的返回光引导到第三端口（113），适于反射入射光（S1）的镜元件（12），从而改变偏振状态，使得返回 光（S2）与入射光（S1）的偏振状态相比具有基本上正交的偏振状态，并且适于光学连接光学方向元件（11）的第二端口（112）的光波导（13） 镜元件（12）。 本发明还涉及包括这种光学延迟电路的环形腔（2,3）以及具有所述光学延迟电路的光学干涉仪（4,5）。

公开(公告)号：WO2009092436A1

公开(公告)日：2009-07-30

申请号：PCT/EP2008/050635

申请日：2008-01-21

Applicant: AP SENSING GMBH ,  NEBENDAHL, Bernd

Inventor： NEBENDAHL, Bernd

IPC: G01K11/32

CPC classification number: G01K11/32 ,  G01K2011/324

Abstract: A distributed temperature sensing apparatus (100) for measuring a temperature distribution along a waveguide (102), the distributed temperature sensing apparatus (100) comprising an electromagnetic radiation source (104) adapted for generating electromagnetic radiation of two wavelengths (λ 1 , λ 2 ) to be coupled into the waveguide (102), wherein the two wavelengths (λ 1 , λ 2 ) differ by the Raman shift of the material of the waveguide (102), and an evaluation unit(106)adapted for deriving information indicative of a temperature distribution along the waveguide (102) based on an evaluation of the electromagnetic radiation after propagation through the waveguide (102).

Abstract translation: 一种用于测量沿着波导（102）的温度分布的分布式温度感测装置（100），所述分布式温度感测装置（100）包括电磁辐射源（104），该电磁辐射源适于产生两个波长（λ1，λ2 ）耦合到所述波导（102）中，其中所述两个波长（λ1，λ2）与所述波导（102）的材料的拉曼偏移相差，以及评估单元（106），其适于导出指示 基于通过波导（102）传播之后的电磁辐射的评估，沿着波导（102）的温度分布。

公开(公告)号：WO2007016976A1

公开(公告)日：2007-02-15

申请号：PCT/EP2005/053857

申请日：2005-08-04

Applicant: AGILENT TECHNOLOGIES, INC. ,  NEBENDAHL, Bernd ,  BELLER, Josef

Inventor： NEBENDAHL, Bernd ,  BELLER, Josef

IPC: G01M11/00 ,  G01K11/32

CPC classification number: G01M11/3109 ,  G01K11/32

Abstract: The invention relates to determining a distributed property of a device under test - DUT- (3) by wavelength dependent selecting a first response signal (R1) and a second response signal (R2) returning from the DUT (3) in response to a probe signal (S) launched into a near end of the DUT (3), both response signals comprising a first order scatter signal originating from the forward traveling probe signal (S), and a second order scatter signal originating from the backwards traveling probe signal reflected at a far end of the DUT (3), and determining the distributed optical property of the DUT (3) on the base of the first order scatter signals and the second order scatter signals of the first response signal (P1) and the second response signal (P2).

Abstract translation: 本发明涉及通过依赖于波长的选择来响应于探头从DUT（3）返回的第一响应信号（R1）和第二响应信号（R2）来确定被测器件的分布特性 - DUT-（3） 信号（S）发射到DUT（3）的近端，包括源自前向探测信号（S）的一阶散射信号的响应信号和源自反向传播探测信号的二阶散射信号反映 在DUT（3）的远端，并且基于第一次散射信号和第一响应信号（P1）和第二响应的二阶散射信号确定DUT（3）的分布式光学特性 信号（P2）。

公开(公告)号：WO2004021535A1

公开(公告)日：2004-03-11

申请号：PCT/EP2002/009582

申请日：2002-08-28

Applicant: AGILENT TECHNOLOGIES INC. ,  SCHWARZ, Jochen ,  STEFFENS, Wolf ,  KALLMANN, Ulrich ,  NEBENDAHL, Bernd ,  MUELLER, Emmerich

Inventor： SCHWARZ, Jochen ,  STEFFENS, Wolf ,  KALLMANN, Ulrich ,  NEBENDAHL, Bernd ,  MUELLER, Emmerich

IPC: H01S5/14

CPC classification number: H01S3/08036 ,  H01S3/08059

Abstract: A cavity comprising: a first cavity end mirror (10) and a second cavity end mirror (20), both mirrors being arranged to at least partially reflect an incident beam (100) of electromagnetic radiation towards each other, an optical path of said beam of electromagnetic radiation within said cavity, which is defined in length ' by said first (10) and second cavity end mirror (20), a dispersive device (50), which is arranged, such that a portion of said optical path of said beam (100) of electromagnetic radiation traverses through said dispersive device (50), wherein said dispersive device (50) comprises a dispersive characteristic representing a functional dependence of an optical path length of said portion with respect to wavelength of said electromagnetic radiation, wherein said optical path length increases with an increasing wavelength of said electromagnetic radiation.

Abstract translation: 一种空腔，包括：第一腔端镜（10）和第二腔端镜（20），两个镜被布置成至少部分地将电磁辐射的入射光束（100）朝向彼此反射，所述光束的光路 在所述空腔内的由所述第一（10）和第二腔端镜（20）限定的电磁辐射，分散装置（50），其被布置成使得所述光束的所述光路的一部分 （100）电磁辐射穿过所述分散装​​置（50），其中所述色散装置（50）包括表示所述部分相对于所述电磁辐射的波长的光程长度的功能依赖性的色散特性，其中所述光 路径长度随着所述电磁辐射的波长的增加而增加。

公开(公告)号：WO2005031929A1

公开(公告)日：2005-04-07

申请号：PCT/EP2003/050665

申请日：2003-09-29

Applicant: AGILENT TECHNOLOGIES, INC. ,  NEBENDAHL, Bernd ,  KALLMANN, Ulrich

Inventor： NEBENDAHL, Bernd ,  KALLMANN, Ulrich

IPC: H01S3/139

CPC classification number: H01S3/1055 ,  H01S3/139

Abstract: Disclosed is a control unit for controlling a laser unit comprising a laser gain medium and an external cavity having a reflecting dispersion device. The laser gain medium is adapted for providing a first beam towards the reflecting dispersion device, the reflecting dispersion device is adapted for receiving the first beam and reflecting a beam, having a reflection angle dependent on the wavelength, towards the laser gain medium, and the laser gain medium is adapted for providing a second beam in another direction than the first beam. The control unit comprises an angle unit adapted for providing an angular variation signal indicative of an angular variation of the second beam, and an analysis unit adapted for receiving the angular variation signal and controlling the reflection angle of the reflecting dispersion device dependent on the angular variation signal.

Abstract translation: 公开了一种控制单元，用于控制包括激光增益介质的激光单元和具有反射分散装置的外部空腔。 所述激光增益介质适于向所述反射色散装置提供第一光束，所述反射色散装置适于接收所述第一光束并将具有取决于所述波长的反射角的光束反射到所述激光增益介质，并且 激光增益介质适于在第一光束的另一方向上提供第二光束。 所述控制单元包括角度单元，其适于提供指示所述第二光束的角度变化的角度变化信号，以及分析单元，其适于接收所述角度变化信号并根据所述角度变化来控制所述反射分散装置的反射角度 信号。

公开(公告)号：WO2004025794A1

公开(公告)日：2004-03-25

申请号：PCT/EP2002/010286

申请日：2002-09-13

Applicant: AGILENT TECHNOLOGIES, INC. ,  STEFFENS, Wolf ,  KALLMANN, Ulrich ,  HAEUSSLER, Ralf ,  NEBENDAHL, Bernd ,  JENSEN, Thomas ,  MUELLER, Emmerich

Inventor： STEFFENS, Wolf ,  KALLMANN, Ulrich ,  HAEUSSLER, Ralf ,  NEBENDAHL, Bernd ,  JENSEN, Thomas ,  MUELLER, Emmerich

IPC: H01S5/14

CPC classification number: H01S5/0687 ,  H01S3/1068 ,  H01S5/141 ,  H01S5/143

Abstract: The present invention relates to an apparatus and to a method of manipulating a laser source (2), the method comprising the steps of: analyzing an optical signal (3, 4, 5) generated by the laser source (2), evaluating on the basis of the analysis an actual indicator corresponding with an actual value of a tuning velocity of the laser source (2), comparing the actual indicator with a desired indicator corresponding with a desired value of the tuning velocity to detect a deviation of the actual value of the tuning velocity from the desired value of the tuning velocity, and compensating the deviation if any by manipulating at least one parameter influencing the signal (3, 4, 5) of the laser source (2).

Abstract translation: 本发明涉及一种操纵激光源（2）的装置和方法，该方法包括以下步骤：分析由激光源（2）产生的光信号（3,4,5），对 分析的基础是与激光源（2）的调谐速度的实际值对应的实际指示符，将实际指示符与对应于调谐速度的期望值的期望指示器进行比较，以检测实际值 从所述调谐速度的所需值调谐速度，以及通过操纵影响所述激光源（2）的信号（3,4,5）的至少一个参数来补偿所述偏差。

公开(公告)号：WO2003105293A1

公开(公告)日：2003-12-18

申请号：PCT/EP2002/006123

申请日：2002-06-05

Applicant: AGILENT TECHNOLOGIES, INC. ,  NEBENDAHL, Bernd

Inventor： NEBENDAHL, Bernd

IPC: H01S3/083

CPC classification number: H01S5/141 ,  G02B5/12 ,  G02B27/4294 ,  H01S3/08059 ,  H01S3/083 ,  H01S3/1055 ,  H01S5/143

Abstract: A ring laser arrangement adapted for providing an optical beam travelling on an optical path representing a closed loop, the ring laser arrangement comprises a laser gain medium (10) coupled into the optical path for amplifying the optical beam by stimulated emission, and a wavelength filter (50) coupled into the optical path for providing a wavelength selection to the optical beam travelling along the optical path.

Abstract translation: 一种环形激光装置，其适于提供在表示闭环的光路上行进的光束，所述环形激光装置包括耦合到用于通过受激发射放大光束的光路中的激光增益介质（10）和波长滤波器 （50），其耦合到光路中，用于向沿着光路行进的光束提供波长选择。

公开(公告)号：WO2003094313A1

公开(公告)日：2003-11-13

申请号：PCT/EP2002/004736

申请日：2002-04-30

Applicant: AGILENT TECHNOLOGIES, INC. ,  SCHUBERT, Michael ,  NEBENDAHL, Bernd ,  MUELLER, Emmerich ,  HAEUSSLER, Ralf ,  STEFFENS, Wolf

Inventor： SCHUBERT, Michael ,  NEBENDAHL, Bernd ,  MUELLER, Emmerich ,  HAEUSSLER, Ralf ,  STEFFENS, Wolf

IPC: H01S5/14

CPC classification number: H01S5/141 ,  H01S3/131 ,  H01S3/136 ,  H01S3/139 ,  H01S5/0683 ,  H01S5/0687 ,  H01S5/143

Abstract: Provided is a laser unit (120) tunable in wavelength, having a laser mode selection, and being adapted to provide a laser signal (110) in accordance with one or more laser control parameters. For operating the laser unit, the laser signal (110) is swept in a wavelength range, a laser operation signal indicative of the laser unit's (120) operation during the sweep is received, and the laser operation signal is analyzed for detecting an indication of a mode hop occured in the generated laser signals during the sweep. At least one correction value is determined based on the detected mode hop indication, and at least one of the one or more laser control parameters, applicable for a next wavelength sweep, is modified based on the determined at least one correction value.

Abstract translation: 提供了可以波长可调的激光单元（120），其具有激光模式选择，并且适于根据一个或多个激光控制参数提供激光信号（110）。 为了操作激光单元，激光信号（110）在波长范围内扫描，接收指示扫描期间激光单元（120）操作的激光操作信号，并且分析激光操作信号以检测激光信号 在扫描期间在所生成的激光信号中发生模跳。 基于检测到的模式跳跃指示来确定至少一个校正值，并且基于所确定的至少一个校正值来修改适用于下一个波长扫描的一个或多个激光控制参数中的至少一个。

公开(公告)号：WO2007085301A1

公开(公告)日：2007-08-02

申请号：PCT/EP2006/050483

申请日：2006-01-27

Applicant: AGILENT TECHNOLOGIES, INC ,  GUENTHER, Martin-georg ,  NEBENDAHL, Bernd

Inventor： GUENTHER, Martin-georg ,  NEBENDAHL, Bernd

IPC: G01M11/00 ,  G01J3/44

CPC classification number: G01J3/44 ,  G01J3/02 ,  G01J3/0218 ,  G01J3/0235 ,  G01J3/12 ,  G01J5/602 ,  G01J2003/123 ,  G01J2003/1243 ,  G01M11/3172

Abstract: The invention relates to determining spectral components (S4, S5) of a response light (S2, S3) originating from a device under test -DUT-, comprising an optical detector (50) and a switchable filter (40), wherein the a switchable filter (40) is optically connected in series with the optical detector (50) and is arranged for receiving the response light 5 (S2, S3) comprising a first spectral component (S4) around a first response wavelength (1) and a second spectral component (S5) around a second response wavelength (2) of the response light (S2, S3), and wherein the switchable filter (40) is adapted for either selecting the first spectral component (S4) or the second spectral component (S5) and transmitting the selected spectral component to the optical detector (50).

Abstract translation: 本发明涉及确定源自被测器件-DUT-的响应光（S2，S3）的光谱分量（S4，S5），包括光学检测器（50）和可切换滤光器（40），其中可切换 滤光器（40）与光学检测器（50）串联光学连接，并且布置成用于接收包括围绕第一响应波长（1）的第一光谱分量（S4）的响应光5（S2，S3）和第二光谱 响应光（S2，S3）的第二响应波长（2）周围的分量（S5），并且其中可切换滤波器（40）适于选择第一频谱分量（S4）或第二频谱分量（S5） 以及将所选择的光谱分量发射到所述光学检测器（50）。