OPTICAL COHERENT RECEIVER ON A CHIP

    公开(公告)号:US20240388366A1

    公开(公告)日:2024-11-21

    申请号:US18787886

    申请日:2024-07-29

    Abstract: Embodiments described herein may be related to apparatuses, processes, and techniques related to coherent optical receivers, including coherent receivers with integrated all-silicon waveguide photodetectors and tunable local oscillators implemented within CMOS technology. Embodiments are also directed to tunable silicon hybrid lasers with integrated temperature sensors to control wavelength. Embodiments are also directed to post-process phase correction of optical hybrid and nested I/Q modulators. Embodiments are also directed to demultiplexing photodetectors based on multiple microrings. In embodiments, all components may be implements on a silicon substrate. Other embodiments may be described and/or claimed.

    III-N multichip modules and methods of fabrication

    公开(公告)号:US11211245B2

    公开(公告)日:2021-12-28

    申请号:US16890937

    申请日:2020-06-02

    Abstract: A device includes a layer including a first III-Nitride (III-N) material, a channel layer including a second III-N material, a release layer including nitrogen and a transition metal, where the release layer is between the first III-N material and the second III-N material. The device further includes a polarization layer including a third III-N material above the release layer, a gate structure above the polarization layer, a source structure and a drain structure on opposite sides of the gate structure where the source structure and the drain structure each include a fourth III-N material. The device further includes a source contact on the source structure and a drain contact on the drain structure.

    OPTICAL RECEIVER EMPLOYING A METASURFACE COLLECTION LENS

    公开(公告)号:US20190044003A1

    公开(公告)日:2019-02-07

    申请号:US15927391

    申请日:2018-03-21

    Abstract: In embodiments, an optoelectronic apparatus may include a substrate with a first side and a second side opposite the first side; a photodetector disposed on the first side of the substrate, the photodetector to convert a light signal into an electrical signal; and a dielectric metasurface lens etched into the second side of the substrate, the dielectric metasurface lens to collect incident light and focus it through the substrate onto the photodetector.

    OPTICAL MODE CONVERTOR
    6.
    发明公开

    公开(公告)号:US20240184048A1

    公开(公告)日:2024-06-06

    申请号:US18496672

    申请日:2023-10-27

    CPC classification number: G02B6/14 G02B6/1228 G02B2006/12152

    Abstract: Embodiments relate to an apparatus that includes: an input stage with an input Si slab height, an input Si waveguide height, and an input height difference between the input Si slab height and the input Si waveguide height; an output stage with an output Si slab height that is different from the input Si slab height, an output Si waveguide height that is different from the input Si waveguide height, and an output height difference between the output Si slab height and the output Si waveguide height that is different from the input height difference; and a transition stage positioned between the input stage and the output stage, wherein the transition stage has a transition Si slab height, a transition Si waveguide height, and a transition height difference between the transition Si slab height and the transition Si waveguide height. Other embodiments may be described and/or claimed.

    WAVEGUIDE PHOTODETECTORS FOR SILICON PHOTONIC INTEGRATED CIRCUITS

    公开(公告)号:US20220416097A1

    公开(公告)日:2022-12-29

    申请号:US17358921

    申请日:2021-06-25

    Abstract: A photodetector structure over a partial length of a silicon waveguide structure within a photonic integrated circuit (PIC) chip. The photodetector structure is embedded within a cladding material surrounding the waveguide structure. The photodetector structure includes an absorption region, for example comprising Ge. A sidewall of the cladding material may be lined with a sacrificial spacer. After forming the absorption region, the sacrificial spacer may be removed and passivation material formed over a sidewall of the absorption region. Between the absorption region an impurity-doped portion of the waveguide structure there may be a carrier multiplication region, for example comprising crystalline silicon. If present, edge facets of the carrier multiplication region may be protected by a spacer material during the formation of an impurity-doped charge carrier layer. Occurrence of edge facets may be mitigated by embedding a portion of the photodetector structure with a thickness of the waveguide structure.

    TECHNOLOGIES FOR SILICON DIFFRACTION GRATINGS

    公开(公告)号:US20220390654A1

    公开(公告)日:2022-12-08

    申请号:US17561781

    申请日:2021-12-24

    Abstract: Technologies for silicon diffraction gratings are disclosed. In some embodiments, grating lines of the diffraction gratings may have several sub-lines that make up each grating line of the diffraction grating. The sub-lines may be sub-wavelength features. In some embodiments, several silicon diffraction gratings may be made from a wafer, such as a wafer with a diameter of 300 millimeters. The wafer may be etched precisely across the entire wafer, leading to a high yield of the diffraction gratings.

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