会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 7. 发明授权
    • Optical clock phase-locked loop circuit
    • 光时钟锁相环电路
    • US07151897B2
    • 2006-12-19
    • US10310086
    • 2002-12-04
    • Takuya OharaHidehiko TakaraSatoki Kawanishi
    • Takuya OharaHidehiko TakaraSatoki Kawanishi
    • H04B10/00H04B10/08H04B17/00
    • H04L7/0075
    • This optical clock phase-locked loop circuit includes an oscillator 12, an optical coupler 2, an optical cross-correlation detection device 3 that outputs light containing the correlating components of two lights from the coupled light of optical coupler 2, an optical band pass filter 4 that extracts light of a wavelength that contains cross-correlating components, an optical receiver 5, a phase comparator 6 that compares the phases of the output signal of the oscillator 12 and the cross-correlation signal from the optical receiver 5, a voltage controlled oscillator 7 that changes the oscillation frequency and phase corresponding to the output of the phase comparator 6, an optical pulse generator 8 that generates a optical clock pulse containing an nth harmonic component, an optical coupler 10 that divides optical clock, and an optical modulator 11 driven by low-frequency oscillator 12 that modulates optical clock from optical coupler 10.
    • 该光时钟锁相环电路包括振荡器12,光耦合器2,光互相关检测装置3,其从光耦合器2的耦合光输出包含两个光的相关分量的光,光学带通滤波器 提取包含互相关分量的波长的光,光接收器5,比较振荡器12的输出信号的相位和来自光接收器5的互相关信号的相位比较器6,电压控制 振荡器7,其改变与相位比较器6的输出相对应的振荡频率和相位;产生包含第n次谐波分量的光时钟脉冲的光脉冲发生器8,分割光时钟的光耦合器10和光调制器11 由调制来自光耦合器10的光时钟的低频振荡器12驱动。
    • 8. 发明授权
    • Optical sampling waveform measuring apparatus aiming at achieving wider band
    • 光采样波形测量装置旨在实现更宽的频带
    • US06720548B2
    • 2004-04-13
    • US10095982
    • 2002-03-12
    • Akihito OtaniToshinobu OtsuboHidehiko TakaraIppei ShakeSatoki Kawanishi
    • Akihito OtaniToshinobu OtsuboHidehiko TakaraIppei ShakeSatoki Kawanishi
    • G02F101
    • G01J11/00G02F1/3534
    • A nonlinear optical crystal is composed of 2-adamantyl-5-nitorpyridine (AANP) allowing the type 2 phase matching to the sampling light and a measuring object light, emitting a sum frequency light of the measuring object light and the sampling light, with the polarization directions thereof being perpendicular to each other, when the sampling light and measuring object light multiplexed by a multiplexer are entered. When the sum frequency light is emitted through the nonlinear optical crystal, a control portion controls the polarization direction of the sampling light so as to be parallel to a predetermined reference axis located within a plane perpendicular to a phase matching direction of the nonlinear optical crystal. The predetermined reference axis is a single axis maintaining parallelism with the crystal axis of the nonlinear optical crystal even if the wavelength of the inputted light is changed.
    • 非线性光学晶体由允许与采样光进行2相匹配的2-金刚烷基-5-硝基吡啶(AANP)和测量对象光组成,发射测量对象光和采样光的和频光,与 当由多路复用器复用的采样光和测量对象光进入时,其极化方向彼此垂直。 当通过非线性光学晶体发射和频光时,控制部分将采样光的偏振方向控制成与位于垂直于非线性光学晶体的相位匹配方向的平面内的预定参考轴平行。 即使输入光的波长发生变化,预定的基准轴也是与非线性光学晶体的晶轴保持平行的单轴。
    • 9. 发明授权
    • Complementary optical sampling waveform measuring apparatus and
polarization beam splitter which can be assembled therein
    • 可以组装在其中的互补光采样波形测量装置和偏振分束器
    • US6154309A
    • 2000-11-28
    • US154445
    • 1998-09-16
    • Akihito OtaniToshinobu OtsuboHidehiko TakaraSatoki Kawanishi
    • Akihito OtaniToshinobu OtsuboHidehiko TakaraSatoki Kawanishi
    • G01J11/00G02F1/37G02F1/35
    • G02B27/283G01J11/00
    • A sampling light source generates a pulse sequence of sampling light having a pulse width smaller than that of target light and a single plane of polarization. A polarization beam splitting unit splits each of the sampling light output from the sampling light source, and the target light into two light components having planes of polarization shifted 90.degree. from each other, multiplexes each pair of split sampling and target light components having planes of polarization shifted 90.degree. from each other, and outputs the respective multiplexed light components to different optical paths. A pair of nonlinear optical members each generate a cross-correlation signal based on the sampling and target light components output from the polarization beam splitting unit to each optical path and having planes of polarization shifted 90.degree. from each other as sum frequency light. A pair of photodetectors each convert the sum frequency light output from each of the pair of nonlinear optical members into an electrical signal. A signal processing unit adds the electrical signals output from the pair of photodetectors, processes the resultant electrical signal, and displays its pulse waveform. With this operation, the pulse waveform of the target light can be accurately measured regardless of variations in the polarized state of the target light.
    • 采样光源产生采样光的脉冲序列,其脉冲宽度小于目标光和单一偏振平面。 偏振光束分离单元将从采样光源输出的采样光中的每一个分离,并将目标光分成具有彼此偏移90°的偏振面的两个光分量,将每对分离采样和目标光分量复用为具有 偏振偏移90°,并将各复用光分量输出到不同的光路。 一对非线性光学部件基于从偏振光束分离单元向每个光路输出的采样和目标光分量产生互相关信号,并且具有彼此偏移90°的偏振平面作为和频光。 一对光电检测器将从每对非线性光学部件的每一个输出的和频率光转换为电信号。 信号处理单元将从一对光检测器输出的电信号相加,处理所得的电信号,并显示其脉冲波形。 通过该操作,无论目标光的偏振状态的变化如何,都可以精确地测量目标光的脉搏波形。
    • 10. 发明授权
    • Wavelength dispersion measuring apparatus and polarization dispersion
measuring apparatus
    • 波长色散测量装置和偏振色散测量装置
    • US5995228A
    • 1999-11-30
    • US250089
    • 1999-02-16
    • Akihito OtaniToshinobu OtsuboHidehiko TakaraSatoki KawanishiYoshiaki Yamabayashi
    • Akihito OtaniToshinobu OtsuboHidehiko TakaraSatoki KawanishiYoshiaki Yamabayashi
    • G01M11/02G01J4/00G01J7/00G01J9/02G01M11/00G01J4/04
    • G01M11/336G01J4/00G01J7/00G01M11/332G01M11/335G01J2009/0261
    • A first tunable wavelength pulse light source is driven by a reference signal to emit a first optical pulse. An optical demultiplexer demultiplexes a first optical pulse emitted from the first pulse light source into a reference optical pulse and an incident optical pulse to be sent into an object to be measured. An optical multiplexer multiplexes the reference optical pulse and an outgoing optical pulse passing through the object to output multiplexed light. A second pulse light source generates a second optical pulse which is synchronous with the first optical pulse and delays a predetermined time for each period of the first optical pulse. A sampling unit receives the multiplexed light and the second optical pulse to obtain an optical pulse train signal proportional to the intensity of the multiplexed light obtained in synchronism with the second optical pulse. From the optical pulse train signal from the sampling unit, a signal processor obtains an envelope formed by peaks of individual optical pulses forming the optical pulse train. The wavelength dispersion of the object is obtained by measuring the delay time of the outgoing optical pulse passing through the object on the basis of intervals between the peaks of the envelope.
    • 第一可调波长脉冲光源由参考信号驱动以发射第一光脉冲。 光解复用器将从第一脉冲光源发射的第一光脉冲解复用为参考光脉冲和入射光脉冲,以发送到待测物体中。 光复用器复用参考光脉冲和通过物体的输出光脉冲以输出多路复用光。 第二脉冲光源产生与第一光脉冲同步的第二光脉冲,并延迟第一光脉冲的每个周期的预定时间。 采样单元接收复用光和第二光脉冲,以获得与与第二光脉冲同步获得的多路复用光的强度成比例的光脉冲串信号。 从采样单元的光脉冲信号中,信号处理器获得由形成光脉冲串的各个光脉冲的峰值形成的包络。 通过基于信封的峰值之间的间隔测量通过物体的输出光脉冲的延迟时间来获得物体的波长色散。