OPTICAL RECEIVER PACKAGE WITH BACKSIDE LENS-INTEGRATED PHOTODETECTOR DIE

    公开(公告)号:US20190123109A1

    公开(公告)日:2019-04-25

    申请号:US16225130

    申请日:2018-12-19

    Abstract: Optical receiver packages and device assemblies that include photodetector (PD) chips having focus lenses monolithically integrated on PD die backsides are disclosed. An example receiver package includes a support structure, a PD die, and an optical input device. The PD die includes a PD, integrated proximate to a first face of the PD die, and further includes a lens, integrated on, or proximate to, an opposite second face. The first face of the PD die faces the support structure, while the second face (“backside”) faces the optical input device. The optical receiver architectures described herein may provide an improvement for the optical alignment tolerance issues, especially for high-speed operation in which the active aperture of the PD may have to be very small. Furthermore, architectures described herein advantageously enable integrating a focus lens in a PD die that may be coupled to the support structure in a flip-chip arrangement.

    Contactless optical probing of edge-coupled photonic ICs

    公开(公告)号:US12216158B2

    公开(公告)日:2025-02-04

    申请号:US17102891

    申请日:2020-11-24

    Abstract: Systems and methods for testing a photonic IC (PIC) with an optical probe having an out-of-plane edge coupler to convey test signals between the out-of-plane probe and an edge coupled photonic waveguide within a plane of the PIC. To accommodate dimensions of the optical probe, a test trench may be fabricated in the PIC near an edge coupler of the waveguide. The optical probe may be displaced along one or more axes relative to a prober to position a free end of the prober within the test trench and to align the probe's out-of-plane edge coupler with an edge coupler of a PIC waveguide. Accordingly, a PIC may be probed at the wafer-level, without first dicing a wafer into PIC chips or bars. The optical probe may be physically coupled to a prober through a contact sensor to detect and/or avoid physical contact between probe and PIC.

    III-N MULTICHIP MODULES AND METHODS OF FABRICATION

    公开(公告)号:US20220122842A1

    公开(公告)日:2022-04-21

    申请号:US17563968

    申请日:2021-12-28

    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.

    III-N MULTICHIP MODULES AND METHODS OF FABRICATION

    公开(公告)号:US20210375620A1

    公开(公告)日:2021-12-02

    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.

    Mechanisms for refractive index tuning semiconductor photonic devices

    公开(公告)号:US11175451B2

    公开(公告)日:2021-11-16

    申请号:US16733167

    申请日:2020-01-02

    Abstract: Embodiments include apparatuses, methods, and systems including a semiconductor photonic device having a waveguide disposed above a substrate. The waveguide has a first section including amorphous silicon with a first refractive index, and a second section including crystalline silicon with a second refractive index different from the first refractive index. The semiconductor photonic device further includes a heat element at a vicinity of the first section of the waveguide. The heat element is arranged to generate heat to transform the amorphous silicon of the first section of the waveguide to partially or completely crystallized crystalline silicon with a third refractive index. The amorphous silicon in the first section may be formed with silicon lattice defects caused by an element implanted into the first section. Other embodiments may also be described and claimed.

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