DIRECTIONAL COUPLERS WITH HETEROGENOUS CLADDINGS

    公开(公告)号:EP4400883A2

    公开(公告)日:2024-07-17

    申请号:EP23205378.5

    申请日:2023-10-24

    Inventor: BIAN, Yusheng

    CPC classification number: G02B2006/1214720130101 G02B6/125

    Abstract: Structures for a directional coupler and methods of forming a structure for a directional coupler. The structure comprises a first waveguide core including a first plurality of segments, and a second waveguide core including a second plurality of segments disposed adjacent to the first plurality of segments in a coupling region. The structure further comprises a first cladding layer comprising a first material that has a first refractive index, and a second cladding layer comprising a second material that has a second refractive index different from the first refractive index. The first cladding layer adjoins a first sidewall of each of the first plurality of segments and a first sidewall of each of the second plurality of segments, and the second cladding layer adjoins a second sidewall of each of the first plurality of segments and a second sidewall of each of the second plurality of segments.

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