Tuning method of external cavity laser diode, variable wavelength laser module, and program of external cavity laser diode tuning
    1.
    发明授权
    Tuning method of external cavity laser diode, variable wavelength laser module, and program of external cavity laser diode tuning 有权
    外腔激光二极管调谐方法,可变波长激光模块,外腔激光二极管调谐程序

    公开(公告)号:US08023549B2

    公开(公告)日:2011-09-20

    申请号:US12570524

    申请日:2009-09-30

    IPC分类号: H01S3/08

    摘要: A tuning methods of an External Cavity Laser Diode (ECLD), comprises steps of: (1) providing a laser light to a grating so as to tilt the grating to an optical axis of a collimated laser light, (2) adjusting the orientation of the grating relative to the collimated laser light, (3) monitoring singleness of longitudinal mode and optical power of a light emitted from the grating, (4) calculating an orientation of the grating to exhibit intended optical power at which the singleness of longitudinal mode shows at least predetermined value, (5) adjusting the grating orientation or the optical axis of the collimated laser light to the calculated grating orientation.

    摘要翻译: 外部激光二极管(ECLD)的调谐方法包括以下步骤:(1)向光栅提供激光以将光栅倾斜到准直激光的光轴,(2)调整 相对于准直激光的光栅,(3)监测从光栅发射的光的纵向模式和光功率的单一性,(4)计算光栅的取向以显示纵向模式的单一性显示的预期光焦度 至少预定值,(5)将准直激光的光栅方向或光轴调整到所计算的光栅方向。

    Feedback polarization controller
    2.
    发明授权
    Feedback polarization controller 失效
    反馈偏振控制器

    公开(公告)号:US06885782B2

    公开(公告)日:2005-04-26

    申请号:US10179807

    申请日:2002-06-25

    IPC分类号: G02B6/10 G02B27/28 G02B6/00

    CPC分类号: G02B6/105 G02B27/286

    摘要: The invention provides a polarization controller to set the state of polarization (SOP) of light in an optical fiber. A plurality of piezoelectric squeezers couple with an electronic drive to apply compression forces to the fiber. The drive applies voltage signals to the squeezers and monitors one or more of (a) a voltage across the squeezer, (b) a capacitance change with the fiber, (c) a force applied to the squeezer, (d) a force applied to the fiber, and (e) a resonance of one or more squeezers. Feedback from one or more of (a)-(e) is used to modify the applied voltage signals in control of the SOP.

    摘要翻译: 本发明提供一种偏振控制器来设置光纤中的光的偏振状态(SOP)。 多个压电挤压机与电子驱动器耦合以对纤维施加压缩力。 驱动器向挤压机施加电压信号并且监测(a)挤压机两端的电压中的一个或多个,(b)与纤维的电容变化,(c)施加到挤压机的力,(d) 纤维,和(e)一个或多个挤压机的共振。 (a) - (e)中的一个或多个的反馈用于在SOP的控制中修改施加的电压信号。

    METHOD FOR FINDING AND TRACKING SINGLE-MODE OPERATION POINT OF EXTERNAL CAVITY DIODE LASERS
    3.
    发明申请
    METHOD FOR FINDING AND TRACKING SINGLE-MODE OPERATION POINT OF EXTERNAL CAVITY DIODE LASERS 有权
    用于发现和跟踪外部二维激光器的单模操作点的方法

    公开(公告)号:US20120287491A1

    公开(公告)日:2012-11-15

    申请号:US13557247

    申请日:2012-07-25

    IPC分类号: G03H1/04 H01S3/098

    摘要: An apparatus comprising: a processor for determining if a laser is operating in a single-mode state and for determining the degree to which one of one or more tunable parameters for the laser must be adjusted so that laser operates in a single-mode state if not operating in a single-mode state, wherein the one or more tunable parameters include the following parameters: the laser current and the wavelength of the output light. The apparatus may include a laser and/or a holographic storage medium. Also provided is a method for determining if a laser is operating in a single-mode state and for determining the degree to which one of one or more tunable parameters for the laser must be adjusted so that laser operates in a single-mode state if not operating in a single-mode state.

    摘要翻译: 一种装置,包括:处理器,用于确定激光器是否处于单模状态,并且用于确定激光器的一个或多个可调谐参数中的哪一个必须被调整的程度,使得激光器以单模状态工作,如果 不工作在单模状态,其中一个或多个可调参数包括以下参数:激光电流和输出光的波长。 该装置可以包括激光和/或全息存储介质。 还提供了一种用于确定激光器是否在单模状态下操作并且用于确定激光器的一个或多个可调谐参数中的哪一个必须被调整的程度的方法,使得激光器在单模状态下操作 工作在单模状态。

    Optical frequency sweep control and readout by using a phase lock
    4.
    发明授权
    Optical frequency sweep control and readout by using a phase lock 失效
    光频扫描控制和使用相位锁定读出

    公开(公告)号:US06870629B1

    公开(公告)日:2005-03-22

    申请号:US10283649

    申请日:2002-10-29

    IPC分类号: G01B9/02 G01J9/02 G01M11/00

    CPC分类号: G01M11/331 G01J9/0246

    摘要: The invention allows for the accurate, real-time readout of the optical frequency of a swept-wavelength laser device by counting the number of fringes of a calibrated etalon that occur as the laser is swept. The distinguishing feature of the present invention is that the etalon fringe signal is phase-locked to a slave signal of a higher multiple frequency. The higher frequency of the slave signal divides the frequency interval of the etalon fringe spacing by the additional frequency multiple. The slave signal therefore generates a scale for optical frequency that is of higher resolution than possible with the etalon alone. The phase-lock also insures that the slave signal tracks monotonic scans of the optical frequency regardless of scan profile.The invention also allows for the precise, real-time control of the optical frequency of a laser during the sweep of the laser. By comparing a signal proportional to the transmission of light through a calibrated Fabry-Perot etalon to a reference control signal, the phase difference between etalon transmission signal and the reference signal may be fed back to the laser to drive the phase difference to zero (phase-lock). The phase-lock ensures that the optical frequency profile of the sweep follows exactly the frequency profile of the reference signal. Tailoring the input reference signal controls the velocity of the optical-frequency sweep.

    摘要翻译: 本发明通过计数随着激光被扫描而发生的校准的标准具的条纹数目,允许扫描波长激光器件的光频率的准确的实时读出。 本发明的特征在于,标准具条纹信号被锁定到较高频率的从属信号。 从信号的较高频率将标准具条纹间距的频率间隔除以附加频率倍数。 因此,从属信号产生比单独使用标准具可能的分辨率更高的光学频率标尺。 相位锁定还确保从属信号跟踪光频率的单调扫描,而不管扫描轮廓如何。本发明还允许在激光扫描期间对激光器的光频率进行精确的实时控制。 通过将通过校准的法布里 - 珀罗标准具的光传输成比例的信号与参考控制信号进行比较,标准具传输信号和参考信号之间的相位差可以反馈到激光器以将相位差驱动为零(相位 -锁)。 相位锁定确保扫描的光学频率分布精确跟随参考信号的频率分布。 调整输入参考信号控制光频扫描的速度。

    System and devices for improving external cavity diode lasers using wavelength and mode sensors and compact optical paths
    5.
    发明申请
    System and devices for improving external cavity diode lasers using wavelength and mode sensors and compact optical paths 有权
    使用波长和模式传感器和紧凑光路改善外腔二极管激光器的系统和器件

    公开(公告)号:US20090323737A1

    公开(公告)日:2009-12-31

    申请号:US12457498

    申请日:2009-06-12

    IPC分类号: H01S3/10 H01S3/08

    摘要: External cavity laser (ECL) systems and methods for measuring the wavelength of the ECL by using a portion of the positional light received by the position sensitive detector (PSD) to determine the position of a wavelength tuning element (such as a diffraction grating or an etalon), for determining the longitudinal laser mode or power output of the laser from a portion of the laser light received by a beam-shearing mode sensor, and by using a non-output beam(s) from a transmissive diffraction grating in the ECL to monitor the external cavity laser.

    摘要翻译: 外腔激光器(ECL)系统和方法,用于通过使用由位置敏感检测器(PSD)接收的位置光的一部分来测量ECL的波长,以确定波长调谐元件(例如衍射光栅或 标准具),用于确定来自由束剪切模式传感器接收的激光的一部分的激光器的纵向激光模式或功率输出,以及通过使用ECL中的透射衍射光栅的非输出光束 监测外腔激光器。

    System and devices for improving external cavity diode lasers using wavelength and mode sensors and compact optical paths
    6.
    发明授权
    System and devices for improving external cavity diode lasers using wavelength and mode sensors and compact optical paths 有权
    使用波长和模式传感器和紧凑光路改善外腔二极管激光器的系统和器件

    公开(公告)号:US08311067B2

    公开(公告)日:2012-11-13

    申请号:US12457498

    申请日:2009-06-12

    IPC分类号: H01S3/10

    摘要: External cavity laser (ECL) systems and methods for measuring the wavelength of the ECL by using a portion of the positional light received by the position sensitive detector (PSD) to determine the position of a wavelength tuning element (such as a diffraction grating or an etalon), for determining the longitudinal laser mode or power output of the laser from a portion of the laser light received by a beam-shearing mode sensor, and by using a non-output beam(s) from a transmissive diffraction grating in the ECL to monitor the external cavity laser.

    摘要翻译: 外腔激光器(ECL)系统和方法,用于通过使用由位置敏感检测器(PSD)接收的位置光的一部分来测量ECL的波长,以确定波长调谐元件(例如衍射光栅或 标准具),用于确定来自由束剪切模式传感器接收的激光的一部分的激光器的纵向激光模式或功率输出,以及通过使用ECL中的透射衍射光栅的非输出光束 监测外腔激光器。

    METHOD FOR FINDING AND TRACKING SINGLE-MODE OPERATION POINT OF EXTERNAL CAVITY DIODE LASERS
    7.
    发明申请
    METHOD FOR FINDING AND TRACKING SINGLE-MODE OPERATION POINT OF EXTERNAL CAVITY DIODE LASERS 有权
    用于发现和跟踪外部二维激光器的单模操作点的方法

    公开(公告)号:US20100074089A1

    公开(公告)日:2010-03-25

    申请号:US12562568

    申请日:2009-09-18

    IPC分类号: G11B7/00 H01S3/00

    摘要: An apparatus comprising: a processor for determining if a laser is operating in a single-mode state and for determining the degree to which one of one or more tunable parameters for the laser must be adjusted so that laser operates in a single-mode state if not operating in a single-mode state, wherein the one or more tunable parameters include the following parameters: the laser current and the wavelength of the output light. The apparatus may include a laser and/or a holographic storage medium. Also provided is a method for determining if a laser is operating in a single-mode state and for determining the degree to which one of one or more tunable parameters for the laser must be adjusted so that laser operates in a single-mode state if not operating in a single-mode state.

    摘要翻译: 一种装置,包括:处理器,用于确定激光器是否处于单模状态,并且用于确定激光器的一个或多个可调谐参数中的哪一个必须被调整的程度,使得激光器以单模状态工作,如果 不工作在单模状态,其中一个或多个可调参数包括以下参数:激光电流和输出光的波长。 该装置可以包括激光和/或全息存储介质。 还提供了一种用于确定激光器是否在单模状态下操作并且用于确定激光器的一个或多个可调谐参数中的哪一个必须被调整的程度的方法,使得激光器在单模状态下操作 工作在单模状态。

    Resonantly driven fiber polarization scrambler
    8.
    发明授权
    Resonantly driven fiber polarization scrambler 失效
    共振驱动光纤极化扰频器

    公开(公告)号:US06721468B2

    公开(公告)日:2004-04-13

    申请号:US10165697

    申请日:2002-06-07

    IPC分类号: G02B600

    摘要: The invention provides a polarization scrambler to rapidly change the state of polarization of light transmitted through a single mode fiber such that a substantial portion of the Poincare sphere is covered. A plurality of piezoelectric squeezers couple with an electronic drive. Each squeezer resonates in response to drive signals from the electronic drive to induce radial compression forces on the fiber. The drive signals remain resonant with each squeezer, at frequencies of about 100 kHz, through a feedback loop for each of the squeezers and the electronic drives. Coverage over the Poincare sphere typically occurs in less than about 100 milliseconds, and preferably less than 1 millisecond.

    摘要翻译: 本发明提供了一种极化扰频器,用于快速改变通过单模光纤传输的光的偏振状态,使得庞加莱球体的大部分被覆盖。 多个压电挤压机与电子驱动器耦合。 每个挤压器响应于来自电子驱动器的驱动信号而谐振以在光纤上引起径向压缩力。 驱动信号通过每个挤压机和电子驱动器的反馈回路与每个挤压机保持谐振,频率约为100kHz。 庞加莱球体上的覆盖范围通常发生在小于约100毫秒,最好小于1毫秒。

    Method for finding and tracking single-mode operation point of external cavity diode lasers
    9.
    发明授权
    Method for finding and tracking single-mode operation point of external cavity diode lasers 有权
    寻找和跟踪外腔二极管激光器单模操作点的方法

    公开(公告)号:US08675695B2

    公开(公告)日:2014-03-18

    申请号:US13557247

    申请日:2012-07-25

    IPC分类号: H01S3/098

    摘要: An apparatus comprising: a processor for determining if a laser is operating in a single-mode state and for determining the degree to which one of one or more tunable parameters for the laser must be adjusted so that laser operates in a single-mode state if not operating in a single-mode state, wherein the one or more tunable parameters include the following parameters: the laser current and the wavelength of the output light. The apparatus may include a laser and/or a holographic storage medium. Also provided is a method for determining if a laser is operating in a single-mode state and for determining the degree to which one of one or more tunable parameters for the laser must be adjusted so that laser operates in a single-mode state if not operating in a single-mode state.

    摘要翻译: 一种装置,包括:处理器,用于确定激光器是否处于单模状态,并且用于确定激光器的一个或多个可调谐参数中的哪一个必须被调整的程度,使得激光器以单模状态工作,如果 不工作在单模状态,其中一个或多个可调参数包括以下参数:激光电流和输出光的波长。 该装置可以包括激光和/或全息存储介质。 还提供了一种用于确定激光器是否在单模状态下操作并且用于确定激光器的一个或多个可调谐参数中的哪一个必须被调整的程度的方法,使得激光器在单模状态下操作 工作在单模状态。

    Method for finding and tracking single-mode operation point of external cavity diode lasers
    10.
    发明授权
    Method for finding and tracking single-mode operation point of external cavity diode lasers 有权
    寻找和跟踪外腔二极管激光器单模操作点的方法

    公开(公告)号:US08254418B2

    公开(公告)日:2012-08-28

    申请号:US12562568

    申请日:2009-09-18

    IPC分类号: H01S3/098 H01S3/00

    摘要: An apparatus comprising: a processor for determining if a laser is operating in a single-mode state and for determining the degree to which one of one or more tunable parameters for the laser must be adjusted so that laser operates in a single-mode state if not operating in a single-mode state, wherein the one or more tunable parameters include the following parameters: the laser current and the wavelength of the output light. The apparatus may include a laser and/or a holographic storage medium. Also provided is a method for determining if a laser is operating in a single-mode state and for determining the degree to which one of one or more tunable parameters for the laser must be adjusted so that laser operates in a single-mode state if not operating in a single-mode state.

    摘要翻译: 一种装置,包括:处理器,用于确定激光器是否处于单模状态,并且用于确定激光器的一个或多个可调谐参数中的哪一个必须被调整的程度,使得激光器以单模状态工作,如果 不工作在单模状态,其中一个或多个可调参数包括以下参数:激光电流和输出光的波长。 该装置可以包括激光和/或全息存储介质。 还提供了一种用于确定激光器是否在单模状态下操作并且用于确定激光器的一个或多个可调谐参数中的哪一个必须被调整的程度的方法,使得激光器在单模状态下操作 工作在单模状态。