中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

16 records (took 0.022 seconds)

    Dual-frequency optical source
    11.
    发明授权
    Dual-frequency optical source 有权
    双频光源

    公开(公告)号：US09537571B2

    公开(公告)日：2017-01-03

    申请号：US14605987

    申请日：2015-01-26

    Applicant: CALIFORNIA INSTITUTE OF TECHNOLOGY

    Inventor： Jiang Li ,  Kerry Vahala

    IPC: H04B10/00 ,  H04L7/00 ,  H04B10/2507 ,  H04B10/2575 ,  H04B10/25 ,  H04B10/50 ,  H03L7/08 ,  H03L7/16

    CPC classification number: H04B10/2507 ,  H03B17/00 ,  H03L7/08 ,  H03L7/16 ,  H04B10/2504 ,  H04B10/2575 ,  H04B10/503 ,  H04B2210/006 ,  H04L7/0075 ,  H04L7/0091

    Abstract: A dual-frequency optical source comprises: (a) first and second pump laser sources arranged to generate optical pump power at respective first and second pump laser frequencies vpump1 and vpump2; and (b) a fiber optical resonator characterized by a Brillouin shift frequency vB and a free spectral range that is substantially equal to an integer submultiple of the Brillouin shift frequency. Each one of the first and second pump laser sources is frequency-locked to a corresponding resonant optical mode of the fiber optical resonator. First and second optical output signals of the dual-frequency optical reference source at respective first and second output frequencies v1=vpump1−vB and v2=vpump2−vB comprise stimulated Brillouin laser output generated by simultaneous optical pumping of the fiber optical resonator by the first and second pump laser sources, respectively. An output difference frequency v2−v1 is greater than about 300 GHz.

    Abstract translation: 双频光源包括：（a）第一和第二泵浦激光源，被布置成在相应的第一和第二泵浦激光频率vpump1和vpump2处产生光泵浦功率; 以及（b）以布里渊移动频率vB为特征的光纤谐振器，和基本上等于布里渊移动频率的整数倍的自由光谱范围。 第一和第二泵浦激光源中的每一个被频率锁定到光纤光谐振器的相应的谐振光学模式。 在相应的第一和第二输出频率v1 = vpump1-vB和v2 = vpump2-vB处的双频光参考源的第一和第二光输出信号包括通过第一和第二信号同时光纤泵浦光纤光学谐振器而产生的受激布里渊激光输出 和第二泵激光源。 输出差频v2-v1大于约300GHz。

    On-chip optical reference cavity exhibiting reduced resonance center frequency fluctuations
    12.
    发明授权
    On-chip optical reference cavity exhibiting reduced resonance center frequency fluctuations 有权
    片内光学参考腔表现出减小的共振中心频率波动

    公开(公告)号：US08848760B2

    公开(公告)日：2014-09-30

    申请号：US13831692

    申请日：2013-03-15

    Applicant: California Institute of Technology

    Inventor： Kerry Vahala ,  Tong Chen ,  Hansuek Lee ,  Myoung-Gyun Suh

    IPC: H01S3/08

    CPC classification number: H01S3/0014 ,  G02B6/12007 ,  G02B6/2934 ,  H01S3/08013 ,  H01S3/1305 ,  H01S5/026 ,  H01S5/0687

    Abstract: An optical apparatus comprises a waveguide substrate and an optical reference cavity. The optical reference cavity comprises an optical waveguide formed on the waveguide substrate and arranged to form a closed loop greater than or about equal to 10 cm in length. The RMS resonance frequency fluctuation is less than or about equal to 100 Hz. The Q-factor can be greater than or about equal to 108. The optical waveguide can exhibit optical loss less than or about equal to 0.2 dB/m for propagation of an optical signal along the optical waveguide. The closed loop path can comprise two or more linked spirals greater than or about equal to 1 meter in length and can occupy an area on the waveguide substrate less than or about equal to 5 cm2.

    Abstract translation: 光学装置包括波导基板和光学参考腔。 光学参考腔包括形成在波导衬底上并被布置成形成长度大于或等于10cm的闭环的光波导。 RMS谐振频率波动小于或等于100Hz。 Q因子可以大于或等于108.光波导可以表现出对于光信号沿着光波导传播的小于或等于0.2dB / m的光损耗。 闭环路径可以包括两个或更多个长度大于或等于等于1米的连接螺旋，并且可以占据波导基板上小于或等于5cm 2的区域。

    Stabilized microwave-frequency source
    16.
    发明授权
    Stabilized microwave-frequency source 有权
    稳定的微波频率源

    公开(公告)号：US09450673B2

    公开(公告)日：2016-09-20

    申请号：US14605977

    申请日：2015-01-26

    Applicant: CALIFORNIA INSTITUTE OF TECHNOLOGY ,  THE UNITED STATES OF AMERICA, AS REPRESENTED BY THE SECRETARY OF COMMERCE, THE NATIONAL INSTITUTE OF STANDARDS AND TECHNOLOGY

    Inventor： Kerry Vahala ,  Scott Diddams ,  Jiang Li ,  Xu Yi ,  Hansuek Lee

    IPC: H04B10/2507 ,  H04B10/2575 ,  H04B10/25 ,  H04B10/50 ,  H04L7/00 ,  H03L7/08 ,  H03L7/16

    CPC classification number: H04B10/2507 ,  H03B17/00 ,  H03L7/08 ,  H03L7/16 ,  H04B10/2504 ,  H04B10/2575 ,  H04B10/503 ,  H04B2210/006 ,  H04L7/0075 ,  H04L7/0091

    Abstract: A microwave-frequency source at frequency fM comprises: a dual optical-frequency reference source, an electro-optic sideband generator, an optical bandpass filter, an optical detector, a reference oscillator, an electrical circuit, and a voltage-controlled oscillator (VCO). The sideband generator modulates dual optical reference signals at v2 and v1 to generate sideband signals at v1±n1fM and v2±n2fM. The bandpass filter transmits sideband signals at v1+N1fM and v2−N2fM. The optical detector generates a beat note at (v2−N2fM)−(v1+N1fM). The beat note and a reference oscillator signal are processed by the circuit to generate a loop-filtered error signal to input to the VCO. Output of the VCO at fM drives the sideband generator and forms the microwave-frequency output signal. The resultant frequency division results in reduced phase noise on the microwave-frequency signal.

    Abstract translation: 频率fM的微波频率源包括：双光频参考源，电光边带发生器，光带通滤波器，光检测器，参考振荡器，电路和压控振荡器（VCO ）。 边带发生器在v2和v1处调制双光参考信号，以在v1±n1fM和v2±n2fM产生边带信号。 带通滤波器发送v1 + N1fM和v2-N2fM的边带信号。 光学检测器在（v2-N2fM） - （v1 + N1fM）处产生节拍。 拍音和参考振荡器信号由电路处理以产生环路滤波的误差信号以输入到VCO。 在fM处的VCO的输出驱动边带发生器并形成微波频率输出信号。 所得到的分频导致微波频率信号上的相位噪声减小。

Patent Agency Ranking