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    OPTICALLY BALANCED OPTO-ELECTRICAL OSCILLATOR
    23.
    发明申请
    OPTICALLY BALANCED OPTO-ELECTRICAL OSCILLATOR 有权

    公开(公告)号：US20180076896A9

    公开(公告)日：2018-03-15

    申请号：US14027129

    申请日：2013-09-13

    Applicant: California Institute of Technology

    Inventor： Firooz AFLATOUNI ,  Behrooz Abiri ,  Seyed Ali Hajimiri

    IPC: H04B10/2575

    CPC classification number: H04B10/2575 ,  G02F2001/212 ,  H03K3/42

    Abstract: An opto-electrical oscillator includes, in part, first and second optical phase modulators, a coupler, an optical-to-electrical signal conversion circuit, and a control circuit. The first optical phase modulator modulates the phase of a first optical signal in response to a first feedback signal to generate a first phase modulated signal. The second optical phase modulator modulates the phase of a second optical signal in response to a second feedback signal to generate a second phase modulated signal. The first and second optical signals travel through first and second optical paths respectively and are generated from the same optical source. The optical-to-electrical signal conversion circuit receives an optical signal from the coupler and in response generates an electrical signal applied to the control circuit. The output signals of the control circuit cause the first and second feedback signals to be out of phase.

    Laser Wireless Power Transfer System With Active And Passive Safety Measures
    24.
    发明申请
    Laser Wireless Power Transfer System With Active And Passive Safety Measures 审中-公开

    公开(公告)号：US20170346347A1

    公开(公告)日：2017-11-30

    申请号：US15604587

    申请日：2017-05-24

    Applicant: California Institute of Technology

    Inventor： Behrooz Abiri ,  Aroutin Khachaturian ,  Seyed Ali Hajimiri

    IPC: H02J50/30 ,  H02J50/80 ,  H02J50/90 ,  H02J50/50

    CPC classification number: H02J50/30 ,  H02J50/50 ,  H02J50/80 ,  H02J50/90

    Abstract: A wireless laser power transfer system includes, in part, a transmitter and a receiver that form a wireless link. The transmitter, includes, in part, a first communication system, at least a first source of laser beam, and a controller adapted to vary power and direction of the laser beam and further to modulate the laser beam. The receiver includes, in part, a communication system adapted to establish a wireless link with the first communication system, at least a first photo-voltaic cell, and a controller adapted to demodulate and detect the power of the modulated laser beam received by the first photo-voltaic cell from the first source of laser beam. The system optionally includes at least a second source of laser beam controlled by the transmitter controller. The system optionally further includes a second photo-voltaic cell. The transmitter controller is further adapted to cause the second laser beam to strike the second photo-voltaic cell.

    Integrated Two-Dimensional Planar Optical Phased Array
    26.
    发明申请
    Integrated Two-Dimensional Planar Optical Phased Array 审中-公开

    公开(公告)号：US20170168233A1

    公开(公告)日：2017-06-15

    申请号：US14791187

    申请日：2015-07-02

    Applicant: California Institute of Technology

    Inventor： Firooz Aflatouni ,  Behrooz Abiri ,  Seyed Ali Hajimiri

    IPC: G02B6/124 ,  G02F1/025 ,  G02F1/21 ,  G02B6/34

    CPC classification number: G02B6/124 ,  G02B6/34 ,  G02F1/025 ,  G02F1/218 ,  G02F1/292 ,  G02F2203/15

    Abstract: An optical phased array includes, in part, a multitude of optical signal emitters and a multitude of optical signal phase/delay elements each associated with and disposed between a different pair of the optical signal emitters. Each optical signal phase/delay element is adapted to cause a phase/delay shift between the optical signals emitted from its associated pair of optical signal emitters. Each optical signal phase/delay element is optically a ring resonator that includes a p-i-n junction. By varying the bias applied to the p-i-n junction, the phase/delay generated by the ring resonator is varied. Furthermore, each optical signal emitter is optionally an optical grating having a multitude of grooves. The groove lengths of the optical gratings are optionally selected so as to increase along the direction of travel of the input optical signal through the optical phase array.

    Integrated light source independent linewidth reduction
    28.
    发明授权
    Integrated light source independent linewidth reduction 有权
    集成光源独立线宽降低

    公开(公告)号：US09482886B2

    公开(公告)日：2016-11-01

    申请号：US13684061

    申请日：2012-11-21

    Applicant: California Institute of Technology

    Inventor： Firooz Aflatouni ,  Behrooz Abiri ,  Seyed Ali Hajimiri

    IPC: G02F1/035 ,  G02F1/01 ,  H04B10/2507 ,  H04B10/67

    CPC classification number: G02F1/011 ,  G02F1/0121 ,  H04B10/2507 ,  H04B10/671

    Abstract: An integrated optical linewidth reduction system detects/estimates the phase noise of an incoming optical signal and subtracts the detected phase noise from the phase noise of the incoming signal. A first coupler/splitter of the linewidth reduction system may split the incoming signal into first and second optical signals travelling through first and second optical paths. A second coupler/splitter may split the second optical signal into third and fourth optical signals travelling through third and fourth optical paths. The third optical path has a longer propagation delay than the fourth optical path. Two different coupling ratios of the third and fourth optical signals are used to generate an electrical signal representative of the phase noise of the incoming signal. A phase detector/estimator estimates the phase noise from the electrical signal. A phase modulator subtracts the detected/estimated phase noise from the phase noise of the incoming signal.

    Abstract translation: 集成光学线宽降低系统检测/估计输入光信号的相位噪声，并从输入信号的相位噪声中减去检测到的相位噪声。 线宽降低系统的第一耦合器/分离器可以将输入信号分离成通过第一和第二光路行进的第一和第二光信号。 第二耦合器/分离器可以将第二光信号分离成通过第三和第四光路行进的第三和第四光信号。 第三光路具有比第四光路更长的传播延迟。 使用第三和第四光信号的两种不同的耦合比来产生表示输入信号的相位噪声的电信号。 相位检测器/估计器从电信号估计相位噪声。 相位调制器从输入信号的相位噪声中减去检测/估计的相位噪声。

    WIRELESS POWER TRANSFER
    29.
    发明申请
    WIRELESS POWER TRANSFER 审中-公开
    无线电力传输

    公开(公告)号：US20160190872A1

    公开(公告)日：2016-06-30

    申请号：US14830692

    申请日：2015-08-19

    Applicant: California Institute of Technology

    Inventor： Florian BOHN ,  Behrooz Abiri ,  Seyed Ali Hajimiri

    IPC: H02J50/20

    CPC classification number: H02J50/20 ,  H02J7/025 ,  H02J50/40 ,  H04B5/0037 ,  H04B5/0075

    Abstract: A method of generating a DC power from incident RF waves, includes, in part, measuring the amount of power being received by a device generating the DC power, and controlling the phases of the RF waves being transmitted by a multitude of RF transmitters in accordance with the measured power. A programmable test load is optionally used at the device to measure the received power. The device optionally includes, an antenna, an RF-to-DC converter to generate the DC power, an impedance matching/transformation circuit, and an RF load/matching circuit.

    Abstract translation: 从入射RF波产生直流电力的方法部分地包括测量由产生直流电力的装置接收的功率的量，以及控制由多个射频发射机按照发射的RF波的相位 具有测量的功率。 设备可选择使用可编程测试负载来测量接收功率。 该设备可选地包括天线，用于产生DC电力的RF-DC转换器，阻抗匹配/变换电路和RF负载/匹配电路。

    RF receiver
    30.
    发明授权
    RF receiver 有权

    公开(公告)号：US12283827B2

    公开(公告)日：2025-04-22

    申请号：US18093291

    申请日：2023-01-04

    Applicant: California Institute of Technology

    Inventor： Seyed Ali Hajimiri ,  Florian Bohn ,  Behrooz Abiri

    IPC: H02J50/23 ,  H04B1/16 ,  H02J50/40

    Abstract: A device includes, in part, an antenna adapted to receive an RF signal that includes modulated data, a splitter/coupler adapted to split the received RF signal, a receiver adapted to demodulate the data from a first portion of the RF signal, and a power recovery unit adapted to convert to a DC power a second portion of the RF signal. The splitter/coupler is optionally adjustable to split the RF signal in accordance with a value that may be representative of a number of factors, such as the target data rate, the DC power requirement of the device, and the like. The device optionally includes a switch and/or a power combiner adapted to deliver all the received RF power to the receiver depending on any number of operation conditions of the device or the device's distance from an RF transmitting device.

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