POLARIZATION INSENSITIVE OPTICAL PHASED ARRAY AND ASSOCIATED METHOD

    公开(公告)号:US20190179064A1

    公开(公告)日:2019-06-13

    申请号:US15838498

    申请日:2017-12-12

    IPC分类号: G02B5/18 G02F1/29 G01S17/10

    摘要: A polarization insensitive optical phased array is provided, for LIDAR or other purposes. A polarization rotator splitter or two-dimensional grating coupler provides two components of co-polarized (e.g. TE-polarized) light. Each component can be routed to a separate optical phased array (OPA) component, and light output of one of the OPA components is rotated in polarization by use of a half wave plate. A polarization controller can receive and control the two components of co-polarized light and then passes the controlled light to the two OPA components. A single OPA component can also be used along with a controller which combines the two components of co-polarized light into a single output, passed to the single OPA component.

    OPTICAL TRANSPOSER ASSEMBLY
    3.
    发明申请

    公开(公告)号:US20190324201A1

    公开(公告)日:2019-10-24

    申请号:US15957492

    申请日:2018-04-19

    摘要: An assembly with optical gain assisted optical transposer is provided. The optical transposer which optically couples a fibre array unit and a photonic integrated circuit. The optical transposer includes one or more optical gain elements which are configured to provide optical compensation, for example optical gain to mitigate optical losses associated with multistage photonic integrated devices. According to some embodiments, the optical gain element is a semiconductor optical amplifier (SOA). According to some embodiments the photonic integrated circuit is a SiPh PIC.

    SEAMLESS AND VERTICAL CALL HANDOFF SOLUTION ARCHITECTURE
    5.
    发明申请
    SEAMLESS AND VERTICAL CALL HANDOFF SOLUTION ARCHITECTURE 有权
    无缝和垂直呼叫解决方案架构

    公开(公告)号:US20080254797A1

    公开(公告)日:2008-10-16

    申请号:US11761583

    申请日:2007-06-12

    IPC分类号: H04Q7/20

    摘要: A system, method and apparatus for facilitating handoff of communications with a user device between a first communication network having a first domain technology, and a second communication network having a second domain technology different from the first domain technology, the system, method and apparatus includes an anchor point that establishes a first service flow with the first communication network, and a second service flow with the second communication network based upon a triggering event respectively, with the user device, and a handoff device that receives at least one handoff parameter for determining a handoff operation of the user device from the first communication network to the second communication network.

    摘要翻译: 一种用于在具有第一域技术的第一通信网络和具有与第一域技术不同的第二域技术的第二通信网络之间促进与用户设备的通信切换的系统,方法和装置,所述系统,方法和装置包括: 与所述第一通信网络建立第一服务流的锚点和与所述用户设备分别基于触发事件的第二通信网络的第二服务流,以及接收至少一个切换参数以用于确定的切换设备 用户设备从第一通信网络到第二通信网络的切换操作。

    Optical Edge Coupler with Controllable Mode Field for Photonic Chip

    公开(公告)号:US20180180818A1

    公开(公告)日:2018-06-28

    申请号:US15388861

    申请日:2016-12-22

    IPC分类号: G02B6/30 G02B6/14 G02B6/122

    CPC分类号: G02B6/305 G02B6/1228 G02B6/14

    摘要: An optical coupler at an edge of a photonic integrated circuit (PIC) is provided and configured to match a mode of a waveguide of the PIC to a mode of an external optical fiber. A core of the waveguide terminates prior to the edge and can include an inverted taper for mode enlargement. The waveguide cladding includes an inverted taper and is surrounded by an outer cladding material of lower refractive index, forming a second waveguide. The cladding and outer cladding cooperate to guide light between the core and the edge while the inverted taper contributes to mode enlargement. The outer cladding material is selected to have a refractive index which facilitates the mode matching to optical fiber. The coupler can be provided using lithography. Material underneath the waveguide cladding can be removed by an undercutting process and the outer cladding material deposited in place thereof.

    DYNAMIC MONITORING AND CALIBRATION OF NODES IN AN OPTICAL NETWORKING DEVICE

    公开(公告)号:US20190238224A1

    公开(公告)日:2019-08-01

    申请号:US15883540

    申请日:2018-01-30

    摘要: A monitoring and calibration apparatus for an optical networking device such as ROADM is provided. Reflectors are integrated into the device, for example at the ends of optical interconnect cables. The reflectors reflect light in specific monitoring wavelengths and pass other wavelengths such as those used for communication. A light source emits monitoring light which is reflected by the reflector and measured by a detector to measure the integrity of optical paths. The optical paths can include optical cables and cable connectors. Path integrity between different modules of the device can therefore be monitored. Multiple reflectors, reflecting light in different wavelengths, can be placed in series along the same optical path and used to monitor multiple segments of the path. A wavelength selective switch (WSS) of the device can be used to route monitoring light to different optical paths. The WSS also operates to route communication signals in the device.