Self-aligned spot size converter
    124.
    发明授权

    公开(公告)号:US11360263B2

    公开(公告)日:2022-06-14

    申请号:US16777727

    申请日:2020-01-30

    Abstract: An optical device comprises a substrate, a waveguide disposed on the substrate, and a spot size converter (SSC) disposed on the substrate. The waveguide comprises a shoulder and a ridge. The SSC comprises a shoulder and a ridge. The ridge of the waveguide is aligned to a first stage of the ridge of the SSC. The waveguide is made of a first material. The shoulder and the ridge of the SSC are made of a second material. The second material is different from the first material.

    Multistage spot size converter in silicon photonics

    公开(公告)号:US11079549B2

    公开(公告)日:2021-08-03

    申请号:US16839826

    申请日:2020-04-03

    Abstract: A device is provided for optical mode spot size conversion to optically couple a semiconductor waveguide with an optical fiber. The device includes a waveguide comprising a waveguide taper region, which comprises a shoulder portion and a ridge portion above the shoulder portion. The ridge portion has a width that tapers to meet a width of the shoulder portion. The waveguide taper region comprises a first material. The device also has a mode converter coupled to the waveguide. The mode converter includes a plurality of stages, and each of the plurality of stages tapers in a direction similar to a direction of taper of the waveguide taper region. The mode converter is made of a second material different from the first material.

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