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    METHOD FOR OPTICAL AND ELECTRICAL SIGNAL PROCESSING OF A MULTI-HETERODYNE SIGNAL GENERATED BY A MULTI-MODE SEMI-CONDUCTOR LASER AND DETECTION DEVICE UTILIZING THAT METHOD
    2.
    发明公开
    METHOD FOR OPTICAL AND ELECTRICAL SIGNAL PROCESSING OF A MULTI-HETERODYNE SIGNAL GENERATED BY A MULTI-MODE SEMI-CONDUCTOR LASER AND DETECTION DEVICE UTILIZING THAT METHOD 审中-公开
    通过多模半导体激光器多干扰信号的光，电等信号处理方法的制作和检测设备符合程序

    公开(公告)号：EP3155384A1

    公开(公告)日：2017-04-19

    申请号：EP15729819.1

    申请日：2015-06-16

    Applicant: ETH Zürich

    Inventor： HUGI, Andreas ,  FERREIRA VILLARES, Gustavo Filipe ,  FAIST, Jérôme

    IPC: G01J3/10 ,  G01J3/433 ,  G01J9/04

    CPC classification number: H04B10/64 ,  G01J3/10 ,  G01J3/433 ,  G01J9/0246 ,  G01J9/04 ,  G01J2003/423 ,  H04B10/504 ,  H04B10/505 ,  H04B10/524

    Abstract: A method for optical and electrical signal processing of a multi-heterodyne signal generated by a multi-mode semi-conductor laser, for a system comprising two laser sources and an sample interaction unit. At least the beam of one of the laser passes through said sample interaction unit before being combined on a detector. The first laser is tuned (40=>42) by an amount keeping the tuning result within the available detector bandwidth (55). Then the second laser is roughly tuned by the same amount as the tuning of the first laser to bring back the signal to the vicinity (48) of the original place in the RF-domain and within the bandwidth (55) of the detector. The tuning steps are repeated with different value of mode spacing for reconstructing the sample spectrum and provide a high resolution image of the dip (41) absorption line (40).

    Abstract translation: 本发明涉及一种用于由多模的半导体激光器，其中该系统包括两个激光源和样品的相互作用单元产生的多外差信号的光学和电学信号处理的方法，worin至少之一的光束 激光器在检测器上被组合之前穿过所述交互单元。 两个激光器被调谐到重叠光谱，以产生在检测器（20）的带宽的外差信号。 然后，第一激光通过在保持量所述检测器的可用带宽（55）内的调谐结果调谐（40 => 42）。 然后第二激光器是通过相同量的粗略调谐的作为第一激光器的调谐带回信号以在RF域中的原位置附近（48）和所述检测器的带宽（55）内。 最后，重复调谐步骤许多与模间隔的不同值乘以用于重构样品光谱和提供浸渍（41）的吸收线（40）的高分辨率图像。

    IMPROVED WAVEFRONT SENSOR USING HYBRID OPTICAL/ELECTRONIC HETERODYNE TECHNIQUES
    6.
    发明公开
    IMPROVED WAVEFRONT SENSOR USING HYBRID OPTICAL/ELECTRONIC HETERODYNE TECHNIQUES 审中-公开
    改进的波前传感器使用光学/电子混合HETERODYNTECHNIKEN

    公开(公告)号：EP1692491A2

    公开(公告)日：2006-08-23

    申请号：EP04822113.9

    申请日：2004-12-03

    Applicant: Northorp Grumman Corporation

    Inventor： BROSNAN, Stephen, John ,  WEBER, Mark, Ernest

    IPC: G01N21/55

    CPC classification number: G01J9/04

    Abstract: A hybrid optical/electronic wavefront includes an electro-acoustical device, such as a Bragg cell, that is used to upshift an optical reference signal. An optical test signal and the frequency upshifted optical reference signal are optically heterodyned to create a signal having a frequency equivalent to the beat frequency of the two signals. The optically heterodyned signal is then converted by a detector to an electronic signal having the same phase as the optical test signal. The output of the detector is a sinusoidal signal having the same phase as the phase of the optical test signal. This signal is filtered by way of an AC filter and mixed with a second clock signal. The low frequency product of the mixer is passed by way of a filter and converted to a square wave by way of a comparator. The output of the comparator is applied to a simple pulse counter and used to disable the pulse counter. An electronic reference signal formed by mixing the two RF signals, filtering the output, and squaring up the output by way of another comparator. The reference signal is used to start the pulse counter. A clock signal for the pulse counter is developed by squaring up the RF driving signal applied to the electro-acoustical device by a comparator. The pulse counter counts the clock pulses while it is enabled. The pulse count is linearly related to the difference in phase between the optical test signal and the frequency upshifted signal.

    A phase-diverse coherent optical spectrum analyzer
    7.
    发明公开
    A phase-diverse coherent optical spectrum analyzer 审中-公开
    相位多样，kohärenter，optischer Spektralanalator

    公开(公告)号：EP1669729A1

    公开(公告)日：2006-06-14

    申请号：EP04029252.6

    申请日：2004-12-09

    Applicant: Agilent Technologies, Inc. (a Delaware corporation)

    Inventor： McAlexander, William I. ,  Gurunathan, Mohan ,  Pering, Richard D.

    IPC: G01J9/04 ,  G01R23/14

    CPC classification number: G01J9/04

    Abstract: A phase-diverse coherent optical spectrum analyzer is presented. An optical receiver receives a first input signal and a second input signal, and produces at least a first output signal, a second output signal, and a third output signal based on mixing the first input signal and the second input signal. A processing unit isolates heterodyne components from the first output signal, the second output signal and the third output signal, wherein the heterodyne components comprise a first signal and a second signal that represent the phase-diverse nature of the optical mixing process. Phase diversity of the heterodyning between the first input signal and the second input signal is achieved by the coherent optical spectrum analyzer.

    Abstract translation: 提出了一个相位多样的相干光谱分析仪。 光接收器接收第一输入信号和第二输入信号，并且基于混合第一输入信号和第二输入信号，产生至少第一输出信号，第二输出信号和第三输出信号。 处理单元将外差分量与第一输出信号，第二输出信号和第三输出信号隔离，其中外差分量包括表示光学混合过程的相位多样性的第一信号和第二信号。 第一输入信号和第二输入信号之间的外差的相位分集由相干光谱分析仪实现。

    Apparatus for detecting cross-talk and method therefor
    8.
    发明公开
    Apparatus for detecting cross-talk and method therefor 有权
    用于检测串扰的装置及其方法

    公开(公告)号：EP1324516A2

    公开(公告)日：2003-07-02

    申请号：EP02251900.3

    申请日：2002-03-16

    Applicant: Agilent Technologies, Inc. (a Delaware corporation)

    Inventor： Parks, Chris

    IPC: H04B10/12

    CPC classification number: G01J9/04 ,  H01S5/0687 ,  H04B10/07951 ,  H04B10/572 ,  H04B10/85

    Abstract: In an optical communications system employing a Wavelength Division Multiplexing (WDM) scheme, a laser device can be used to transmit electromagnetic radiation at different wavelengths, each different wavelength being known as a channel. In addition, a demultiplexer such as an Arrayed Waveguide Grating (AWG) can be used to separate out a multiplexed signal into its component channels. It is known that laser devices and AWGs are susceptible to wavelength drift as their temperatures change or aging occurs, in the case of the AWGs causing channels to overlap which results in cross-talk between adjacent channels. Consequently, the present invention provides an apparatus for detecting cross-talk and method therefor. To this end, a first and a second output signal from a wavelength selective device (9) are directed to be coincident upon a photodetector (11). A homodyne beat signal results from the coincidence of the first and the second output signal and the homodyne beat signal is used to measure wavelength drift.

    Abstract translation: 在采用波分复用（WDM）方案的光通信系统中，可以使用激光器装置来传输不同波长的电磁辐射，每个不同的波长被称为通道。 另外，可以使用诸如阵列波导光栅（AWG）之类的解复用器将复用信号分离成其分量信道。 众所周知，激光器件和AWG在温度变化或老化发生时易受波长漂移的影响，在AWG导致通道重叠的情况下，这会导致相邻通道之间的串扰。 因此，本发明提供了一种检测串扰的装置及其方法。 为此，来自波长选择装置（9）的第一和第二输出信号被指引以在光电探测器（11）上重合。 零差拍信号由第一和第二输出信号的重合产生，零差拍信号用于测量波长漂移。

    STRAHLUNGS-MESSVORRICHTUNG
    10.
    发明公开
    STRAHLUNGS-MESSVORRICHTUNG 有权
    辐射测量设备

    公开(公告)号：EP1185844A1

    公开(公告)日：2002-03-13

    申请号：EP00945709.4

    申请日：2000-06-06

    Applicant: Transmit Gesellschaft für Technologietransfer mbH ,  Euteneuer, Arno ,  Giessen, Harald ,  Hofmann, Martin

    Inventor： EUTENEUER, Arno ,  GIESSEN, Harald ,  HOFMANN, Martin

    IPC: G01J11/00

    CPC classification number: G01J9/04 ,  G01J11/00

    Abstract: In a method for influencing and measuring pulsed electromagnetic illumination, e.g. parallel laser light (L), said illumination or light can be spatially divided, in particular, in an autocorrelator comprising a beam receptor (12), can be recombined behind said beam receptor by a superposition or focussing device (18 or 58) and can be detected in the recombinant area by a detector (20). As the transmission system (52), the beam receptor comprises beam profile dividers in a penetrable housing (50), in the form of at least two transmission parts (54; 56), with or in which separate, preferably parallel component beams (S, T) can be modified in their time-based beam characteristics, before being recombined. The inventive beam receptor (12) preferably has at least a two-part mirror (22), plate (32), chamber or crystal system (42) comprising a beam profile divider (14, 24, 34, 44) which creates or leaves unchanged a base component beam (S), whilst the time-based characteristics of this or every other component beam (T) in a neighbouring beam profile divider (16, 26, 36, 46) can be controlled in a different manner, in order to effect, in particular, reflection or transmission delays and/or changes to the optical paths.

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