OPTICAL COMPONENT ASSEMBLY AND WAVEGUIDE LOOPBACK

    公开(公告)号:US20180335567A1

    公开(公告)日:2018-11-22

    申请号:US15974757

    申请日:2018-05-09

    Abstract: An optical component assembly is provided including a substrate. The assembly includes an optical transmitter configured to transmit an optical signal, an optical receiver configured to receive the optical signal, and an optical waveguide extending between the optical transmitter and the optical receiver. The assembly further includes a frangible region defining a first portion of the substrate and a second portion of the substrate, wherein the frangible region is configured to allow the first portion to be separated from the second portion. The assembly may be configured to be modified from a testing configuration, in which the first portion is integrally connected to the second portion via the frangible region, to an operational configuration, in which the first portion is separated from the second portion such that communication of optical signals between the optical transmitter and the optical receiver is precluded.

    DETECTION OF NOISE AND EAVESDROPPING ATTEMPTS ON A QUANTUM COMMUNICATION NETWORK BY PROBING AUXILIARY DEGREES OF FREEDOM

    公开(公告)号:US20240296361A1

    公开(公告)日:2024-09-05

    申请号:US18492330

    申请日:2023-10-23

    CPC classification number: G06N10/20

    Abstract: Methods, apparatuses, and computer program products are provided for detecting an eavesdropper or other network disturbance on a quantum communication network, based on measurements performed on auxiliary degrees of freedom. An example method includes receiving a quantum state with transmitted physical observables imparted to the quantum particle/s on a first set of one or more degrees of freedom. The method further includes determining a received physical characteristic, based on the received observables within each of an auxiliary set of one or more quantum degrees of freedom. The method includes accessing data reflecting the transmitted physical condition on the auxiliary set of one or more quantum degrees of freedom and comparing the received physical characteristic of the quantum state with the transmitted physical condition. Finally, the method includes generating a notification of interference along the quantum interconnect link upon detecting a difference between the received observables and the interconnected observables.

    OPTICAL INTERPOSERS
    27.
    发明申请

    公开(公告)号:US20220276455A1

    公开(公告)日:2022-09-01

    申请号:US17631655

    申请日:2019-08-21

    Abstract: Apparatuses, systems, and associated methods of manufacturing are described that provide an optical interposer and associated communication system. An example optical interposer includes a substrate having a first end that receives a first optical fiber welded thereto and a second end that receives a plurality of photonic integrated circuits (PICs) attached thereto. The interposer further includes an optical waveguide network defined by the substrate that provides optical communication between the first welded optical fiber and the plurality of PICs. The optical waveguide network also includes optical redistribution elements supported by the substrate. In an operational configuration, the optical interposer receives a first input optical signal from the first welded optical fiber, and the plurality of optical redistribution elements successively split the first input optical signal such that a plurality of output optical signals is directed to the plurality of PICs.

    OPTICAL COUPLER
    29.
    发明申请

    公开(公告)号:US20220099891A1

    公开(公告)日:2022-03-31

    申请号:US17421004

    申请日:2020-01-02

    Abstract: An optical interconnect device and the method of fabricating it are described. The device includes an in-plane laser cavity transmitting a light beam along a first direction, a Franz Keldysh (FK) optical modulator transmitting the light beam along the first direction, a mode-transfer module including a tapered structure disposed after the FK optical modulator along the first direction to enlarge the spot size of the light beam to match an external optical fiber and a universal coupler controlling the light direction. The tapered structure can be made linear or non-linear along the first direction. The universal coupler passes the laser light to an in-plane external optical fiber if the fiber is placed along the first direction, or it is a vertical coupler in the case that the external optical fiber is placed perpendicularly to the substrate surface. The coupler is coated with highly reflective material.

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