Photodetectors with controllable resonant enhancement

    公开(公告)号:US11056603B2

    公开(公告)日:2021-07-06

    申请号:US16569617

    申请日:2019-09-12

    Abstract: Resonant cavity photodetector structures which integrate photodetection and filtering capabilities is described. A resonant cavity photodetector structure generally can comprise a region including a resonator, and an absorption region that can be integrated into a cavity of the resonator. The resonator can perform filtering that is suitable for high-bandwidth optical communications, such as Dense Wavelength Multiplexing (DWDM). In some cases, the resonator is a microring resonator. An absorption region can include a photodiode which performs optical energy detection acting as a photodetector, such as an avalanche photodiode (APD) wherein the photodiode. A coupling distance between the resonator region and the absorption region can be controlled, which allows control of a coupling strength between an optical mode of the resonator and the absorption region such that a quality factor (Q-factor) can be tuned. Thus, by adjusting the Q-factor, the resonant cavity photodetector structure can be tuned to achieve a desirable performance.

    OPTICAL SIGNAL FILTERING
    4.
    发明申请

    公开(公告)号:US20200371289A1

    公开(公告)日:2020-11-26

    申请号:US16318071

    申请日:2016-07-18

    Abstract: An example block assembly for optical signal filtering is provided herein. The block assembly includes a base with at least one aperture to receive a mandrel in a plurality of adjustable positions and orientations relative to an axis of the base. The block assembly also includes a first member and a second member extending from the base.

    Tunable ring resonator multiplexers

    公开(公告)号:US11002912B2

    公开(公告)日:2021-05-11

    申请号:US15781560

    申请日:2015-12-11

    Abstract: In the examples provided herein, a system includes an input waveguide, where a first end of the input waveguide is coupled to a light-emitting optical transmitter to allow the emitted light to enter the input waveguide, and a first ring resonator tunable to be resonant at a first resonant wavelength, wherein the first ring resonator is positioned near the input waveguide to couple a light at the first resonant wavelength from the input waveguide to the first ring resonator. The system also has a bus waveguide positioned to couple the light at the first resonant wavelength in the first ring resonator to the bus waveguide, and a mechanism to wavelength-tune the first ring resonator to a particular wavelength.

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