MODE-SELECTIVE OPTICAL FIBER COUPLERS
    2.
    发明公开

    公开(公告)号:US20240159966A1

    公开(公告)日:2024-05-16

    申请号:US18382255

    申请日:2023-10-20

    CPC classification number: G02B6/14 G02B6/02071 G02B6/021

    Abstract: In embodiments, a mode selective optical fiber coupler may include a first propagation waveguide and a second propagation waveguide joined along a coupling length L. The first propagation waveguide and the second propagation waveguide may be tapered from an input face and an output face of the coupler to a midpoint of the coupler. An LP01 mode of an optical signal with a wavelength of 800-950 nm coupled into the first propagation waveguide propagates through the first propagation waveguide and is emitted from the first propagation waveguide. An LP01 loss of the coupler at the output face is less than 1.0 dB. An LP11 mode of the optical signal coupled into the first propagation waveguide is cross-coupled to the second propagation waveguide and is emitted from the second propagation waveguide. An LP11 loss of the coupler at the output face is less than 1.5 dB.

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