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    Wavelength manager
    44.
    发明公开
    Wavelength manager 失效
    Wellenlängenführer

    公开(公告)号：EP0855811A3

    公开(公告)日：2001-02-21

    申请号：EP98300393.0

    申请日：1998-01-20

    Applicant: MARCONI COMMUNICATIONS LIMITED

    Inventor： Wood, Nigel Robert

    IPC: H04B10/145

    CPC classification number: G01J9/04 ,  G01J9/02 ,  G01J2009/0257 ,  H04B10/506 ,  H04B10/572

    Abstract: Scanning based wavelength measurement systems which are suitable for both localised and distributed WDM, High Density WDM, and coherent systems are based around the use of a fixed cavity Fabry-Perot Etalon which when the output of a tuneable laser is passed through it produces a number of reference equispaced transmission maxima. These maxima are used in a Scanning Heterodyne or Scanning Filter based Spectrometer for detection of the wavelength position of the transmitter.

    Abstract translation: 适用于局部和分布式WDM，高密度WDM和相干系统的基于扫描的波长测量系统基于使用固定腔法布里 - 珀罗Etalon，当可调谐激光器的输出通过它时，产生数字 的参考等距传输最大值。 这些最大值用于基于扫描异步或扫描滤波器的光谱仪，用于检测发射机的波长位置。

    APPARATUS AND METHOD FOR CONTROLLING THE OPERATING WAVELENGTH OF A LASER
    47.
    发明授权
    APPARATUS AND METHOD FOR CONTROLLING THE OPERATING WAVELENGTH OF A LASER 有权
    装置和一种用于控制波长的激光的操作

    公开(公告)号：EP1417740B1

    公开(公告)日：2006-07-12

    申请号：EP02739585.4

    申请日：2002-05-30

    Applicant: Altitun AB

    Inventor： VILHELMSSON, Kennet ,  BROBERG, Bjorn ,  PLASTOW, Robert

    IPC: H01S3/13

    CPC classification number: G01J9/0246 ,  G01J2009/0257 ,  H01S3/1305 ,  H01S5/06256 ,  H01S5/0687 ,  H01S5/1209

    Abstract: The present invention relates to an approach to locking the output wavelength of a laser (102) that uses an etalon (112) having non-parallel surfaces (122, 124). Under this approach, the non-parallel etalon (112) is formed from a readily available, low cost optical component, and may include an etalon with a wedged shape or with at least one curved surface. This approach offers significant advantages over the use of a planar etalon. It provides two degrees of freedom in alignment of the device, and so both the absolute wavelength and the spacing between the interference fringes can be independently adjusted. It also reduces the cost and difficulty of assembly, since it utilizes standard optical parts with wide tolerances. The invention may be used within a standard laser package. The invention also permits the laser to be tuned to a precise operating wavelength by setting various tuning signals according to values stored in memory.

    DOUBLE ETALON OPTICAL WAVELENGTH REFERENCE DEVICE
    48.
    发明公开
    DOUBLE ETALON OPTICAL WAVELENGTH REFERENCE DEVICE 审中-公开
    用双标准具光学参考波长设备

    公开(公告)号：EP1218978A1

    公开(公告)日：2002-07-03

    申请号：EP00957375.9

    申请日：2000-08-10

    Applicant: Coretek, Inc.

    Inventor： WATTERSON, Reich ,  TAYEBATI, Parviz ,  McDANIEL, Don ,  McCALLION, Kevin

    IPC: H01S3/10

    CPC classification number: G01J9/0246 ,  G01J2009/0257 ,  H01S5/0078 ,  H01S5/0687 ,  H01S5/18366 ,  H01S5/18388

    Abstract: A compact wavelength monitoring and control assembly (110) for a narrow band (i.e., laser) source is provided, comprising two narrow bandpass, wavelength selective transmission filter elements (130, 160) of Fabry-Perot structure through which two separate collimated beams from a laser source are directed onto two photodetectors (145, 175). A control circuit processes the simultaneously acquired signals from the two detectors (145, 175) as the laser wavelength is varied. The device functions as an optical wavelength discriminator in which the detectors (145, 175) convert optical energy to current (or voltage) for a feedback loop for controlling the laser source. Any one of a large number of discrete, predetermined wavelengths may be chosen for locking using the same device.

    STABILISATION SYSTEM FOR A LIGHT SOURCE
    49.
    发明公开
    STABILISATION SYSTEM FOR A LIGHT SOURCE 审中-公开
    光源稳定系统

    公开(公告)号：EP3225962A2

    公开(公告)日：2017-10-04

    申请号：EP17167609.1

    申请日：2014-10-29

    Applicant: University Court of The University of St Andrews

    Inventor： DHOLAKIA, Kishan ,  MAZILU, Michael ,  METZGER, Klaus

    IPC: G01J9/02 ,  G01J4/00 ,  G01J3/02 ,  H01S5/0687 ,  G01J1/42

    CPC classification number: G01J9/0246 ,  G01J1/4257 ,  G01J3/0205 ,  G01J4/00 ,  G01J2001/0481 ,  G01J2009/0257

    Abstract: A stabilisation system for stabilising an output of a controllable light or laser source comprises a randomizer for randomizing light from the controllable light or laser source to generate a speckle pattern; a detector for detecting the speckle pattern to determine one or more properties of the light and/or changes in one or more properties of the light; and a controller for controlling the controllable light or laser source based on the determined one or more properties of the light and/or changes in one or more properties of the light.

    Abstract translation: 用于稳定可控光源或激光源的输出的稳定系统包括：随机化器，用于随机化来自可控光源或激光源的光以产生散斑图案; 检测器，用于检测散斑图案以确定光的一个或多个属性和/或光的一个或多个属性的变化; 以及用于基于确定的光的一个或多个属性和/或光的一个或多个属性的变化来控制可控光源或激光源的控制器。

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