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    DISSIPATING HEAT FROM AN ACTIVE REGION OF AN OPTICAL DEVICE
    1.
    发明申请
    DISSIPATING HEAT FROM AN ACTIVE REGION OF AN OPTICAL DEVICE 有权

    公开(公告)号：US20210018769A1

    公开(公告)日：2021-01-21

    申请号：US17032637

    申请日：2020-09-25

    Applicant: Juniper Networks, Inc.

    Inventor： Jonathan Edgar Roth ,  Erik Norberg

    IPC: G02F1/025 ,  G02F1/017 ,  G02F1/00 ,  G02F1/01 ,  G02B6/136

    Abstract: A device, such as an electroabsorption modulator, can modulate a light intensity by controllably absorbing a selectable fraction of the light. The device can include a substrate. A waveguide positioned on the substrate can guide light. An active region positioned on the waveguide can receive guided light from the waveguide, absorb a fraction of the received light, and return a complementary fraction of the received light to the waveguide. Such absorption produces heat, mostly at an input portion of the active region. The input portion of the active region can be thermally coupled to the substrate, which can dissipate heat from the input portion, and can help avoid thermal runaway of the device. The active region can be thermally isolated from the substrate away from the input portion, which can maintain a relatively low thermal mass for the active region, and can increase efficiency when heating the active region.

    PHOTODETECTOR WITH SEQUENTIAL ASYMMETRIC-WIDTH WAVEGUIDES
    2.
    发明申请
    PHOTODETECTOR WITH SEQUENTIAL ASYMMETRIC-WIDTH WAVEGUIDES 审中-公开

    公开(公告)号：US20200209472A1

    公开(公告)日：2020-07-02

    申请号：US16233498

    申请日：2018-12-27

    Applicant: Juniper Networks, Inc.

    Inventor： Jonathan Edgar Roth ,  Jared Bauters ,  Erik Johan Norberg

    IPC: G02B6/12 ,  H01L27/146 ,  G02B6/122

    Abstract: Described are various configurations of optical structures having asymmetric-width waveguides. A photodetector can include parallel waveguides that have different widths, which can be connected via passive waveguide. One or more light absorbing regions can be proximate to the waveguides to absorb light propagating through one or more of the parallel waveguides. Multiple photodetectors having asymmetric width waveguides can operate to transduce light in different modes in a polarization diversity optical receiver.

    OPTICAL COUPLER INCLUDING A FARADAY ROTATOR LAYER AND AT LEAST ONE GRATING COUPLER
    3.
    发明申请
    OPTICAL COUPLER INCLUDING A FARADAY ROTATOR LAYER AND AT LEAST ONE GRATING COUPLER 审中-公开

    公开(公告)号：US20190064457A1

    公开(公告)日：2019-02-28

    申请号：US15685114

    申请日：2017-08-24

    Applicant: Juniper Networks, Inc.

    Inventor： Jonathan Edgar Roth ,  Jared Bauters ,  Gregory Alan Fish

    IPC: G02B6/42

    CPC classification number: G02B6/4213 ,  G02B6/272 ,  G02B6/2773 ,  G02B6/34 ,  G02B6/4206 ,  G02B6/4208

    Abstract: An optical coupling device can couple incident light from a fiber into waveguides, but can reduce the coupling of return light from the waveguides into the fiber. A Faraday rotator layer can rotate by forty-five degrees, with a first handedness, respective planes of polarization of incident beams, and can rotate by forty-five degrees, with a second handedness opposite the first handedness, respective planes of polarization of return beams. A redirection layer can include at least one grating coupler that can redirect an incident beam of one polarization so that the redirected path extends within the redirection layer toward a first waveguide, and can redirect an incident beam of an opposite polarization so that the redirected path extends within the redirection layer toward a second waveguide. An optional birefringent layer can spatially separate incident beam having different polarizations, so that two single-polarization grating couplers can be used.

    Reduced crosstalk photonic switch
    4.
    发明授权
    Reduced crosstalk photonic switch 有权

    公开(公告)号：US10951964B2

    公开(公告)日：2021-03-16

    申请号：US16839597

    申请日：2020-04-03

    Applicant: Juniper Networks, Inc.

    Inventor： Jonathan Edgar Roth

    IPC: H04J14/00 ,  H04Q11/00 ,  G02B6/35 ,  H04B10/548 ,  G02F1/313

    Abstract: Described are various configurations of reduced crosstalk optical switches. Various embodiments can reduce or entirely eliminate crosstalk using a coupler that has a power-splitting ratio that compensates for amplitude imbalance caused by phase modulator attenuation. Some embodiments implement a plurality of phase modulators and couplers as part of a dilated switch network to increase overall bandwidth and further reduce potential for crosstalk.

    Integrated optoelectronic device with heater
    5.
    发明授权
    Integrated optoelectronic device with heater 有权

    公开(公告)号：US10739622B2

    公开(公告)日：2020-08-11

    申请号：US16235197

    申请日：2018-12-28

    Applicant: Juniper Networks, Inc.

    Inventor： Jonathan Edgar Roth ,  Erik Johan Norberg

    IPC: G02F1/025 ,  G02F1/017 ,  G02F1/015

    Abstract: Disclosed are structures as well as methods of manufacture and operation of integrated optoelectronic devices that facilitate directly heating the diode or waveguide structures to regulate a temperature of the device while allowing electrical contacts to be placed close to the device to reduce the electrical resistance. Embodiments include, in particular, heterogeneous electro-absorption modulators that include a compound-semiconductor diode structure placed above a waveguide formed in the device layer of an SOI substrate.

    REDUCED CROSSTALK PHOTONIC SWITCH
    6.
    发明申请
    REDUCED CROSSTALK PHOTONIC SWITCH 审中-公开

    公开(公告)号：US20190289373A1

    公开(公告)日：2019-09-19

    申请号：US16267446

    申请日：2019-02-05

    Applicant: Juniper Networks, Inc.

    Inventor： Jonathan Edgar Roth

    IPC: H04Q11/00 ,  G02B6/35 ,  H04B10/548

    Abstract: Described are various configurations of reduced crosstalk optical switches. Various embodiments can reduce or entirely eliminate crosstalk using a coupler that has a power-splitting ratio that compensates for amplitude imbalance caused by phase modulator attenuation. Some embodiments implement a plurality of phase modulators and couplers as part of a dilated switch network to increase overall bandwidth and further reduce potential for crosstalk.

    Integrated wavelength locker
    7.
    发明授权
    Integrated wavelength locker 有权

    公开(公告)号：US10128634B2

    公开(公告)日：2018-11-13

    申请号：US15689352

    申请日：2017-08-29

    Applicant: Juniper Networks, Inc.

    Inventor： John Parker ,  Jared Bauters ,  Jonathan Edgar Roth ,  Erik Norberg ,  Gregory Alan Fish

    IPC: H01S5/068 ,  G02B6/293 ,  H01S5/0687 ,  H01S5/06

    Abstract: Described are various configurations of integrated wavelength lockers including asymmetric Mach-Zehnder interferometers (AMZIs) and associated detectors. Various embodiments provide improved wavelength-locking accuracy by using an active tuning element in the AMZI to achieve an operational position with high locking sensitivity, a coherent receiver to reduce the frequency-dependence of the locking sensitivity, and/or a temperature sensor and/or strain gauge to computationally correct for the effect of temperature or strain changes.

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