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    OPTICAL RECEPTION DEVICE, OPTICAL MODULATOR AND OPTICAL MODULATION METHOD
    2.
    发明申请
    OPTICAL RECEPTION DEVICE, OPTICAL MODULATOR AND OPTICAL MODULATION METHOD 审中-公开

    公开(公告)号：US20180254832A1

    公开(公告)日：2018-09-06

    申请号：US15898122

    申请日：2018-02-15

    Applicant: FUJITSU LIMITED

    Inventor： Miki ONAKA

    IPC: H04B10/532 ,  H01S3/067 ,  G02B6/293 ,  H04B10/66

    CPC classification number: H04B10/532 ,  G02B6/29346 ,  G02B6/29353 ,  G02B6/2938 ,  G02B6/4215 ,  H01S3/06716 ,  H04B10/2912 ,  H04B10/516 ,  H04B10/615 ,  H04B10/66 ,  H04J14/06

    Abstract: An optical reception device includes an optical waveguide substrate that includes a polarization beam splitter that divides reception light into an X polarization component and a Y polarization component orthogonal to the X polarization component, a beam splitter that divides local light, a pair of optical hybrid circuits that causes each of the X polarization component and the Y polarization component to interfere with the divided local light, a first optical waveguide through which the reception light passes, a second optical waveguide through which the X polarization component passes, a third optical waveguide through which the Y polarization component passes, and a fourth optical waveguide through which the local light passes, wherein at least one of the first to fourth optical waveguides is doped with rare earth ions for amplifying light having a predetermined frequency when excitation light is introduced.

    OPTICAL SIGNAL PROCESSING USING AN OPTICAL RESONATOR
    4.
    发明申请
    OPTICAL SIGNAL PROCESSING USING AN OPTICAL RESONATOR 审中-公开

    公开(公告)号：US20180145765A1

    公开(公告)日：2018-05-24

    申请号：US15816529

    申请日：2017-11-17

    Applicant: RAYTHEON COMPANY

    Inventor： Andrew Kowalevicz ,  Gary M. Graceffo ,  Benjamin P. Dolgin

    IPC: H04B10/61 ,  G02B17/00

    CPC classification number: H04B10/615 ,  G02B17/004 ,  H04B10/54 ,  H04B10/676

    Abstract: Aspects are generally directed to optical signal receivers and methods. In one example, a receiver includes a pump assembly configured to produce an encoded pump signal. The receiver includes an optical resonator positioned to receive an optical signal and the encoded pump signal, the optical resonator including an optical medium to accumulate resonant optical signal energy based on the optical signal, and the optical resonator being configured to emit output optical signal energy and disturb the output optical signal energy in response to a variation in the optical signal, the optical medium being further configured to modify a waveform shape of the output optical signal energy based on the encoded pump signal. The receiver further includes a detector to detect the output optical signal energy and determine a characteristic of the variation in the optical signal based on the waveform shape of the output optical signal energy.

    COHERENT RECEIVER
    6.
    发明申请
    COHERENT RECEIVER 审中-公开

    公开(公告)号：US20180062757A1

    公开(公告)日：2018-03-01

    申请号：US15556711

    申请日：2016-03-07

    Applicant: Sumitomo Electric Device Innovations, Inc.

    Inventor： Junji Watanabe

    IPC: H04B10/61 ,  H01L31/0232

    CPC classification number: H04B10/614 ,  G02F2002/006 ,  H01L31/0232 ,  H01L31/02327 ,  H04B10/615 ,  H04B10/6151

    Abstract: The coherent receiver includes a housing, a first multi-mode interference device that includes a first local light input port and a first signal light input port, a second multi-mode interference device that includes a second local light input port and a second signal light input port, a first splitter, a first reflector, a second splitter, a second reflector, and a mounting area on an optical path between the first splitter and the firs local light input port, where the mount area mounts an attenuator for the signal light that attenuates a magnitude of a portion of the local light.

    Integrated multichannel photonic receiver
    7.
    发明授权
    Integrated multichannel photonic receiver 有权

    公开(公告)号：US09876582B2

    公开(公告)日：2018-01-23

    申请号：US15238635

    申请日：2016-08-16

    Applicant: Lockheed Martin Corporation

    Inventor： Thomas William Karras ,  Stephen Voiers Robertson

    IPC: H04B10/00 ,  H04B10/61 ,  H04B10/11 ,  H04B10/2575

    CPC classification number: H04B10/616 ,  H04B10/11 ,  H04B10/2575 ,  H04B10/25759 ,  H04B10/615

    Abstract: An integrated multi-channel photonic radio-frequency (RF) receiver system includes a master oscillator including a laser source configured to generate laser light. A local oscillator (LO) path may include an LO generator, an LO modulator, an optical LO filter, and an optical amplifier optically coupled to one another to generate an LO signal. Multiple RF-modulation channels are coupled through an optical switch to a number of channel filters and configured to produce a number of filtered RF-modulated optical signals. An optical combiner may combine the LO signal with each filtered RF-modulated optical signal to generate down-converted optical signals. Each channel of the plurality of RF-modulation channels includes a channel laser coupled to a channel modulator, and the LO generator and channel lasers of the RF-modulation channels are fed by the laser light of the master oscillator.

    Satellite Tracking with a Portable Telescope and Star Camera
    8.
    发明申请
    Satellite Tracking with a Portable Telescope and Star Camera 有权

    公开(公告)号：US20170366264A1

    公开(公告)日：2017-12-21

    申请号：US15625288

    申请日：2017-06-16

    Applicant: Kathleen Michelle RIESING ,  Hyosang YOON ,  Kerri Lynn CAHOY

    Inventor： Kathleen Michelle RIESING ,  Hyosang YOON ,  Kerri Lynn CAHOY

    IPC: H04B10/118 ,  H04B10/61 ,  G01S3/786

    CPC classification number: H04B10/118 ,  G01S3/786 ,  H04B10/615

    Abstract: A portable optical ground station can track a satellite with an amateur telescope mounted on a two-axis gimbal. The telescope is aligned with respect to an inertial, Earth-fixed frame using a wide field of view star camera. Star cameras are accurate to the arcsecond level and have the advantage of providing orientation with a single measurement. Using multiple star sensor measurements at different gimbal angles, it is possible to calculate the alignment of the gimbals in the Earth-fixed frame and the alignment of the star sensor in the gimbal frame. Once the alignment is obtained, satellite tracking can be achieved with a known orbit and precise Earth rotation model, such as the International Earth Rotation and Reference System Service (IERS). This alignment procedure can be carried out in less than one hour, making it practical to move and deploy the portable ground station.

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