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    METHOD FOR ESTIMATING CHANNEL POWER, METHOD FOR MONITORING FREQUENCY SPECTRUM CHARACTERISTIC, APPARATUS AND SYSTEM
    166.
    发明申请
    METHOD FOR ESTIMATING CHANNEL POWER, METHOD FOR MONITORING FREQUENCY SPECTRUM CHARACTERISTIC, APPARATUS AND SYSTEM 有权
    用于估计信道功率的方法，用于监测频谱特性，装置和系统的方法

    公开(公告)号：US20160308612A1

    公开(公告)日：2016-10-20

    申请号：US15075862

    申请日：2016-03-21

    Applicant: FUJITSU LIMITED

    Inventor： Ying ZHAO ,  Liang DOU ,  Zhenning TAO

    IPC: H04B10/079

    CPC classification number: H04B10/07955 ,  G01J3/00 ,  H04B10/07957

    Abstract: A method, apparatus and system estimating channel power, and monitoring a frequency spectrum characteristic. A method for estimating channel power includes extracting frequency spectrum information from a received signal, so as to obtain a frequency spectrum of the received signal, estimating power of a central channel in the frequency spectra according to a power value of a flat area of the central channel, and estimating power of a neighboring channel in the frequency spectra according to a power value of a flat area of the neighboring channel. With the embodiments of the present disclosure, the power of the central channel and the power of the neighboring channel may be estimated by using only frequency spectrum information obtained by a single optical receiver, so as to quantitatively evaluate influence of a power imbalance effect, thereby ensuring precision of the power estimation, and reducing effects of nonideal factors on the estimated values.

    Abstract translation: 估计信道功率的方法，装置和系统，以及监测频谱特性。 用于估计信道功率的方法包括从接收信号中提取频谱信息，以获得接收信号的频谱，根据中心平坦区域的功率值来估计频谱中的中心信道的功率 信道，并且根据相邻信道的平坦区域的功率值估计频谱中的相邻信道的功率。 利用本公开的实施例，可以通过仅使用由单个光接收器获得的频谱信息来估计中央信道的功率和相邻信道的功率，从而定量评估功率不平衡效应的影响，从而 确保功率估计的精度，并减少非理由因素对估计值的影响。

    MULTIPASS VIRTUALLY IMAGED PHASED ARRAY ETALON
    168.
    发明申请
    MULTIPASS VIRTUALLY IMAGED PHASED ARRAY ETALON 审中-公开
    多个虚拟图像相位阵列ETALON

    公开(公告)号：US20160139390A1

    公开(公告)日：2016-05-19

    申请号：US14941214

    申请日：2015-11-13

    Applicant: AVEDRO, INC.

    Inventor： Michael A. Bukshtab ,  Marc D. Friedman

    IPC: G02B21/00 ,  A61B3/14 ,  G02B17/00 ,  A61B3/13

    CPC classification number: G02B21/0056 ,  A61B3/13 ,  A61B3/14 ,  A61B5/0068 ,  A61B5/0075 ,  G01B9/02044 ,  G01J3/00 ,  G02B17/006 ,  G02B21/0048

    Abstract: An example system determines biomechanical properties of eye tissue. The system includes a confocal microscopy system configured to scan the incident light across a plurality of cross-sections of the tissue. The incident light is reflected by the plurality of cross-sections of tissue as scattered light. The system includes a spectrometer to receive the scattered light and provide spectral information for the scattered light. The system includes processor(s) to determine a Brillouin frequency shift from the spectral information and to generate a three-dimensional profile of the corneal tissue according to the Brillouin frequency shift. The three-dimensional profile provides an indicator of one or more biomechanical properties of the tissue. The spectrometer includes a multipass optical device that generates an interference pattern from the scattered light. The interference pattern provides the spectral information for the scattered light. The spectrometer includes a camera to detect the interference pattern from the optical device.

    Abstract translation: 示例系统确定眼组织的生物力学性质。 该系统包括共焦显微镜系统，其配置成扫描穿过组织的多个横截面的入射光。 入射光被组织的多个横截面反射为散射光。 该系统包括用于接收散射光并提供散射光的光谱信息的光谱仪。 该系统包括从光谱信息确定布里渊频移并且根据布里渊频移产生角膜组织的三维轮廓的处理器。 三维轮廓提供组织的一种或多种生物力学性质的指示物。 光谱仪包括从散射光产生干涉​​图案的多光学光学装置。 干涉图形为散射光提供光谱信息。 光谱仪包括用于检测来自光学装置的干涉图案的照相机。

    Optical Scanning
    169.
    发明申请
    Optical Scanning 有权
    光学扫描

    公开(公告)号：US20150357788A1

    公开(公告)日：2015-12-10

    申请号：US14729529

    申请日：2015-06-03

    Applicant: TOPTICA Photonics AG

    Inventor： Thomas A. Puppe ,  Nico Vieweg ,  Armin Zach ,  Alexander Sell

    IPC: H01S3/11 ,  H01S3/067 ,  H01S3/23

    CPC classification number: H01S3/1106 ,  G01J3/00 ,  G01J3/10 ,  H01S3/067 ,  H01S3/06712 ,  H01S3/08054 ,  H01S3/082 ,  H01S3/10046 ,  H01S3/107 ,  H01S3/1118 ,  H01S3/1304 ,  H01S3/1307 ,  H01S3/136 ,  H01S3/2383

    Abstract: The invention relates to a device for generating temporally distant light pulses, said device comprising a first light source (51) generating a first sequence (I) of light pulses at a first repetition rate, and a second light source (52) generating a second sequence (II) of light pulses at a second repetition rate. It is the object of the present invention to provide an improved device for generating temporally distant light pulses. This object is inventively achieved by providing for at least one actuator element which influences the first and/or the second repetition rate, and a control element (61) which charges the actuator element with a periodical modulation signal (62) for periodical variation of the first and/or second repetition rate. A control circuit is provided for, comprising a phase detector (57), which derives a control signal (58) from the first light pulse sequence (I) and the second light pulse sequence (II), a corrective element (59, 60) which derives a control deviation signal (63) from the control signal (58) and the modulation signal (62), a control element (64), at the input of which the control deviation signal (63) is pending, and a superposition element (66) which forms an actuator signal (67) from the modulation signal (62) and the output signal (65) of the control element (64), and which charges the actuator element with the actuator signal (67). Moreover, the invention relates to a method for generating temporally distant light pulses.

    Abstract translation: 本发明涉及一种用于产生时间上远的光脉冲的装置，所述装置包括以第一重复率产生光脉冲的第一序列（I）的第一光源（51）和产生第二重复频率的第二光源（52） 光脉冲的序列（II）以第二重复率。 本发明的目的是提供一种用于产生时间上远的光脉冲的改进的装置。 该目的通过提供影响第一和/或第二重复率的至少一个致动器元件和控制元件（61）来实现，该控制元件（61）用周期性调制信号（62）对致动器元件进行充电，用于周期性变化 第一和/或第二重复率。 提供了一种控制电路，包括相位检测器（57），其从第一光脉冲序列（I）和第二光脉冲序列（II）导出控制信号（58），校正元件（59,60） 其从所述控制信号（58）和所述调制信号（62）中导出控制偏差信号（63），控制元件（64）在控制偏差信号（63）待处理的输入端处，以及叠加元件 （66），其从所述调制信号（62）和所述控制元件（64）的输出信号（65）形成致动器信号（67），并且利用所述致动器信号（67）对所述致动器元件充电。 此外，本发明涉及一种用于产生时间上远的光脉冲的方法。

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