公开(公告)号：US07496119B2

公开(公告)日：2009-02-24

申请号：US11149780

申请日：2005-06-10

Applicant: Peter Thoma ,  Emmerich Mueller ,  Bernd Nebendahl

Inventor： Peter Thoma ,  Emmerich Mueller ,  Bernd Nebendahl

IPC: H01S3/13

CPC classification number: H01S5/141 ,  H01S5/0687 ,  H01S5/1039

Abstract: A laser apparatus for providing a stabilized multi mode laser beam includes an external cavity for providing an optical path for generating a laser beam which is stimulated by a gain medium, where the external cavity has first spectral characteristics, and a mode-selecting filter positioned within the optical path and having second spectral characteristics. The first characteristics and the second characteristics are adjusted to each other, so that the laser beam has at least two selected modes.

Abstract translation: 用于提供稳定的多模式激光束的激光装置包括外腔，用于提供用于产生由增益介质刺激的激光束的光路，其中外腔具有第一光谱特性，并且模式选择滤光器位于 光路并具有第二光谱特性。 第一特性和第二特性彼此调整，使得激光束具有至少两种选择的模式。

公开(公告)号：US07423760B2

公开(公告)日：2008-09-09

申请号：US10530934

申请日：2002-10-11

Applicant: Wolf Steffens ,  Ulrich Kallmann ,  Bernd Nebendahl ,  Emmerich Mueller ,  Ralf Haeussler

Inventor： Wolf Steffens ,  Ulrich Kallmann ,  Bernd Nebendahl ,  Emmerich Mueller ,  Ralf Haeussler

IPC: G01B9/02

CPC classification number: G01J9/0246 ,  G01B9/02004 ,  G01B9/02007 ,  G01B9/0207 ,  G01B2290/45 ,  G01B2290/60 ,  G01B2290/70 ,  G01J2009/0261

Abstract: An apparatus and to a method of monitoring an interferometer, comprising the steps of: coupling a first optical signal into the interferometer and into a wavelength reference element, detecting a first resulting interference signal being a result of interference of parts of the first optical signal in the interferometer, detecting a resulting reference signal of the wavelength reference element, the resulting reference signal being a result of interaction of the first optical signal with the wavelength reference element, and comparing the first resulting interference signal with the resulting reference signal to detect a drift of the interferometer, if any.

Abstract translation: 一种监测干涉仪的装置和方法，包括以下步骤：将第一光信号耦合到干涉仪中并进入波长参考元件，检测作为第一光信号部分干扰的结果的第一结果干扰信号 所述干涉仪检测所述波长参考元件的参考信号，所得到的参考信号是所述第一光信号与所述波长参考元件相互作用的结果，以及将所述第一结果干扰信号与所得到的参考信号进行比较以检测漂移 的干涉仪，如果有的话。

公开(公告)号：US20070195833A1

公开(公告)日：2007-08-23

申请号：US10565749

申请日：2003-09-29

Applicant: Bernd Nebendahl ,  Ulrich Kallman

Inventor： Bernd Nebendahl ,  Ulrich Kallman

IPC: H01S3/10

CPC classification number: H01S3/1055 ,  H01S3/139

Abstract: 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: 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且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：US08121480B2

公开(公告)日：2012-02-21

申请号：US12363521

申请日：2009-01-30

Applicant: Bogdan Szafraniec ,  Bernd Nebendahl

Inventor： Bogdan Szafraniec ,  Bernd Nebendahl

IPC: H04J14/06 ,  H04B10/06

CPC classification number: H04J14/06 ,  H04B10/2569 ,  H04B10/671 ,  H04B10/697

Abstract: First and second transmitted optical waves having orthogonal polarization states are combined in a polarization multiplexed optical wave. At an optical receiver, an electrical field of the polarization multiplexed optical wave is measured. A plurality of polarization states of the polarization multiplexed optical wave is determined from the measured electrical field. From the plurality of polarization states, a transform that aligns the orthogonal polarization states of the first and second transmitted optical waves with respect to principal axes of the optical receiver is estimated. The first and second transmitted optical waves are recovered by applying the transform to one of i) the polarization multiplexed optical wave and ii) the measured electrical field of the polarization multiplexed optical wave.

Abstract translation: 具有正交偏振状态的第一和第二透射光波在偏振复用光波中组合。 在光接收机中，测量偏振复用光波的电场。 从测量的电场确定偏振复用光波的多个极化状态。 从多个极化状态，估算出相对于光接收机的主轴对准第一和第二透射光波的正交极化状态的变换。 通过将变换应用于i）偏振多路复用光波和ii）测量的偏振复用光波的电场来恢复第一和第二透射光波。

公开(公告)号：US07430227B2

公开(公告)日：2008-09-30

申请号：US10504814

申请日：2002-04-30

Applicant: Michael Schubert ,  Bernd Nebendahl ,  Emmerich Mueller ,  Ralf Haeussler ,  Wolf Steffens

Inventor： Michael Schubert ,  Bernd Nebendahl ,  Emmerich Mueller ,  Ralf Haeussler ,  Wolf Steffens

IPC: H01S5/0683 ,  H01S5/14

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

Abstract: A wavelength tunable laser unit has a laser mode selection, and is adapted to provide a laser signal in accordance with one or more laser control parameters. For operating the laser unit, the laser signal is swept in a wavelength range, a laser operation signal indicative of the laser unit's operation during the sweep is received, and the laser operation signal is analyzed for detecting an indication of a mode hop occurred 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: 波长可调激光单元具有激光模式选择，并且适于根据一个或多个激光控制参数提供激光信号。 为了操作激光单元，激光信号在波长范围内扫描，接收指示扫描期间激光单元操作的激光操作信号，并且分析激光操作信号以检测在 在扫描期间产生激光信号。 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：US20070018635A1

公开(公告)日：2007-01-25

申请号：US11444085

申请日：2006-05-31

Applicant: Bernd Nebendahl

Inventor： Bernd Nebendahl

IPC: G01R31/28

CPC classification number: G01M11/3172 ,  G01M11/3109

Abstract: Determining a physical property of a device under test—DUT—includes receiving an optical scatter signal returning from the DUT in response to a probe signal launched into the DUT, wavelength dependent separating a first response signal and a second response signal from the scatter signal, determining a first power information of the first response signal and a second power information of the second response signal, time-adjusting the first power response and the second power response to each other in order to compensate a group velocity difference between the first response signal and the second response signal within the DUT, and determining the physical property on the base of the time-adjusted power responses.

Abstract translation: 确定被测器件的物理特性包括：响应于发射到DUT中的探测信号接收从DUT返回的光散射信号，波长依赖性分离第一响应信号和来自散射信号的第二响应信号， 确定第一响应信号的第一功率信息和第二响应信号的第二功率信息，将第一功率响应和第二功率响应相互调时，以补偿第一响应信号和 DUT内的第二响应信号，以及基于时间调整的功率响应确定物理特性。

公开(公告)号：US20060007980A1

公开(公告)日：2006-01-12

申请号：US10526168

申请日：2002-08-28

Applicant: Jochen Schwarz ,  Wolf Steffens ,  Ulrich Kallmann ,  Bernd Nebendahl ,  Emmerich Mueller

Inventor： Jochen Schwarz ,  Wolf Steffens ,  Ulrich Kallmann ,  Bernd Nebendahl ,  Emmerich Mueller

IPC: H01S3/08 ,  H01S3/10

CPC classification number: H01S3/08036 ,  H01S3/08059

Abstract: A laser being tunable in wavelength a first reflecting unit and a second unit, both reflecting units being arranged to at least partially reflect an incident beam 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 and second reflecting unit a dispersive device, which is arranged, such that a portion of said optical path of said beam of electromagnetic radiation traverses through said dispersive device, wherein said dispersive device comprises a dispersive characteristic representing a functional dependence of an optical path length of said portion with respect to wavelength of said electromagnetic 6radiation, wherein said optical path length increases with an increasing wavelength of said electromagnetic radiation.

Abstract translation: 激光器可以在波长为第一反射单元和第二单元的情况下被调谐，两个反射单元布置成至少部分地将入射的电磁辐射束朝向彼此反射，所述腔内的所述电磁辐射束的光路是 由所述第一和第二反射单元限定分散装置，所述分散装​​置被布置成使得所述电磁辐射束的所述光路的一部分穿过所述分散装​​置，其中所述色散装置包括表示功能依赖性的色散特性 所述部分的光路长度相对于所述电磁辐射的波长，其中所述光程长度随着所述电磁辐射的波长的增加而增加。

公开(公告)号：US20050230607A1

公开(公告)日：2005-10-20

申请号：US11105697

申请日：2005-04-14

Applicant: Bernd Nebendahl

Inventor： Bernd Nebendahl

IPC: G01K11/12 ,  G01D5/353 ,  G01J1/42 ,  G01K11/32 ,  G01L1/24

CPC classification number: G01L1/246 ,  G01D5/35316 ,  G01D5/35354 ,  G01K11/32

Abstract: The present invention relates to a determination of a physical state of an optical device by measuring a response signal. At least two subsequent measurements are executed. Therefore, a first optical signal is transmitted to the optical device, wherein a first optical property of said first signal is varied according to a first function of the time. A second optical property of a first response signal returning from the optical device is measured over the time and a first result function of the second optical property of the first response signal over the first optical property of first optical signal is established. Further, a second optical signal is transmitted to the optical device, wherein the first optical property of said signal is varied according to a second function of the time that is different from the first function of time. The second optical property of the corresponding second response signal is measured and a second result function of the second optical property of the response signal over the first optical property of the transmitted optical signal is established. The physical state of the optical device is determined on the base of a combination of the first and second result functions.

Abstract translation: 本发明涉及通过测量响应信号来确定光学装置的物理状态。 执行至少两次后续测量。 因此，第一光信号被发送到光学装置，其中所述第一信号的第一光学特性根据时间的第一功能而变化。 在时间上测量从光学装置返回的第一响应信号的第二光学性质，并且建立第一响应信号的第二光学特性超过第一光信号的第一光学性质的第一结果函数。 此外，第二光信号被发送到光学装置，其中所述信号的第一光学特性根据与第一时间功能不同的时间的第二功能而变化。 测量对应的第二响应信号的第二光学性质，并且建立响应信号的第二光学特性的第二结果函数，超过所发送的光信号的第一光学特性。 基于第一和第二结果函数的组合来确定光学装置的物理状态。

公开(公告)号：US06748157B2

公开(公告)日：2004-06-08

申请号：US10195600

申请日：2002-07-11

Applicant: Jochen Buhl ,  Bernd Nebendahl ,  Jörg Schmidt

Inventor： Jochen Buhl ,  Bernd Nebendahl ,  Jörg Schmidt

IPC: G02B600

CPC classification number: G02B6/266

Abstract: This invention relates to a sled-guide-assembly, in particular for an optical attenuating device, comprising a straight guidance and a sled, which is movable within the guidance, wherein the guidance has an inner contour, comprising two guide rails, extending parallel to each other, the inner contour comprises a receiving space between the guide rails, the sled comprises an outer contour arranged in the receiving space, and supports an object, in particular an optical attenuating element, outside of the receiving space, the outer contour comprises first edges and second edges, the first edges rest against the guide rails at a first side, which is turned to the object, and overlap this first side transversally to the longitudinal direction of the guide rails, the second edges rest against the guide rails at a second side, which is turn away from the object, and overlap this second side transversally to the longitudinal direction of the guide rails, the second edges are flexible and abut with tension against the guide rails.

Abstract translation: 本发明涉及一种特别用于光学衰减装置的滑动引导组件，其特征在于一种光学衰减装置，其包括直线引导件和滑动件，该引导件和滑动件可在引导件内可移动，其中引导件具有内部轮廓，该引导件包括两个平行于每个 另一方面，内轮廓包括在导轨之间的接收空间，滑板包括布置在接收空间中的外轮廓，并且在接收空间的外部支撑物体，特别是光衰减元件，外轮廓包括第一边缘 和第二边缘，所述第一边缘在第一侧处抵靠所述导轨，所述第一边缘被转向所述物体，并且在所述第一侧面横向地与所述导轨的纵向方向重叠，所述第二边缘在所述导轨的第二侧处抵靠所述导轨 一侧与物体相反，并且该第二侧横向于导轨的纵向方向重叠，第二边缘是柔性的并且与t 靠近导轨。

公开(公告)号：US20120014691A1

公开(公告)日：2012-01-19

申请号：US13257243

申请日：2009-03-19

Applicant: Bernd Nebendahl

Inventor： Bernd Nebendahl

IPC: H04B10/06 ,  H04B10/08

CPC classification number: H04B10/614 ,  H04B10/60

Abstract: An apparatus calibrates an optical downconverter configured to receive an optical input signal at a signal input and an optical reference signal at a reference input, and to provide at multiple output nodes characterizing signals for characterizing the optical input signal. The downconverter includes receivers having corresponding optical inputs and respectively providing the characterizing signals at the output nodes, and multiple optical signal paths connected between one of the signal and reference inputs and one of the optical inputs. The apparatus includes a signal analyzing unit coupled to the output nodes and configured to receive and analyze the characterizing signals, a first switch for selectively enabling the optical input signal, and a second switch for selectively enabling the reference signal. The signal analyzing unit is configured to derive correction values based on determined signals at the output nodes derived from selectively enabling at least one of the optical input signal and the reference signal, and to correct the characterizing signals with the derived correction values.

Abstract translation: 一种装置校准配置成在信号输入处接收光输入信号并在参考输入处接收光参考信号的光下变换器，并且在多个输出节点处提供表征用于表征光输入信号的信号。 下变频器包括具有对应的光输入并且分别在输出节点处提供表征信号的接收器以及连接在信号参考输入之一和光输入之一的多个光信号路径。 该装置包括耦合到输出节点并被配置为接收和分析特征信号的信号分析单元，用于选择性地启用光输入信号的第一开关和用于选择性地启用参考信号的第二开关。 信号分析单元被配置为基于从选择性地启用光输入信号和参考信号中的至少一个导出的输出节点处的确定的信号导出校正值，并且用导出的校正值来校正表征信号。