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公开(公告)号：US20240142700A1
公开(公告)日：2024-05-02
申请号：US18385119
申请日：2023-10-30
发明人： Han Yun , Erik Johan Norberg , John Parker
CPC分类号： G02B6/1228 , G02B6/136 , G02B2006/12061
摘要： A device comprises a substrate having lower and upper silicon layers separated by a lower dielectric layer and a III-V structure bonded to the substrate, with first, second, and third sections along an optical axis. The first section comprises a first upper waveguide segment of the upper silicon layer, increasing in width from a first width to a second width at an interface between the first and second sections, the III-V structure overlapping with a tapered portion of the first upper waveguide segment. The second section comprises a second upper waveguide segment of the upper silicon layer decreasing in width, and a first lower waveguide segment of the lower silicon layer wider than the second upper waveguide segment at the interface between the second and third sections. The third section comprises a second lower waveguide segment of the lower silicon layer.
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公开(公告)号：US11971575B2
公开(公告)日：2024-04-30
申请号：US18084028
申请日：2022-12-19
发明人： John Parker , Benjamin M. Curtin
CPC分类号： G02B6/1225 , G02B2006/1213 , G02B2006/12138
摘要： Absolute temperature measurements of integrated photonic devices can be accomplished with integrated bandgap temperature sensors located adjacent the photonic devices. In various embodiments, the temperature of the active region within a diode structure of a photonic device is measured with an integrated bandgap temperature sensor that includes one or more diode junctions either in the semiconductor device layer beneath the active region or laterally adjacent to the photonic device, or in a diode structure formed above the semiconductor device layer and adjacent the diode structure of the photonic device.
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公开(公告)号：US20230361532A1
公开(公告)日：2023-11-09
申请号：US17736490
申请日：2022-05-04
发明人： Hanxing Shi , Antonio Labaro , Erik Johan Norberg , Han Yun
CPC分类号： H01S5/1231 , H01S5/0265 , H01S5/124
摘要： A hybrid distributed feedback (DFB) laser formed from III-V and silicon materials can include a grating in the III-V material to provide optical feedback for mode selection. The grating can include a shift feature in a middle or other parts of the grating to change light output from the gain region. The grating can be a top-surface grating or regrowth can be applied to the III-V structure, which can then be bonded to a silicon structure to couple DFB laser light from the III-V structure to one or more silicon waveguides in the silicon structure.
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公开(公告)号：US11585978B2
公开(公告)日：2023-02-21
申请号：US17317003
申请日：2021-05-11
摘要： The wavelength response of an arrayed waveguide grating can be tuned, in accordance with various embodiments, using a beam sweeper including one or more heaters to shift a lateral position of light focused by the beam sweeper at an interface of the beam sweeper with an input free propagation region of the arrayed waveguide grating.
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公开(公告)号：US11536899B2
公开(公告)日：2022-12-27
申请号：US16916781
申请日：2020-06-30
发明人： John Parker , Benjamin M. Curtin
摘要： Absolute temperature measurements of integrated photonic devices can be accomplished with integrated bandgap temperature sensors located adjacent the photonic devices. In various embodiments, the temperature of the active region within a diode structure of a photonic device is measured with an integrated bandgap temperature sensor that includes one or more diode junctions either in the semiconductor device layer beneath the active region or laterally adjacent to the photonic device, or in a diode structure formed above the semiconductor device layer and adjacent the diode structure of the photonic device.
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公开(公告)号：US11437786B2
公开(公告)日：2022-09-06
申请号：US16940835
申请日：2020-07-28
发明人： Gregory Alan Fish , Erik Johan Norberg , John M. Garcia , Robert Silvio Guzzon , Daniel Knight Sparacin
IPC分类号： H01S5/50 , G02B27/28 , H04J14/06 , H04J14/02 , H04B10/50 , G02B6/126 , H01S5/00 , H01S5/068 , G02B6/27
摘要： Embodiments of the invention describe polarization insensitive optical devices utilizing polarization sensitive components. Light comprising at least one polarization state is received, and embodiments of the invention select a first optical path for light comprising a first polarization state or a second optical path for light comprising a second polarization state orthogonal to the first polarization state. The optical paths include components to at least amplify and/or modulate light comprising the first polarization state; the second optical path includes a polarization rotator to rotate light comprising the second polarization state to the first polarization state. Embodiments of the invention further describe optical devices including a polarization mode converter to convert light comprising a first and a second polarization state to light comprising different spatial modes of the first polarization state; light comprising the different spatial modes of the first polarization state is subsequently amplified and modulated.
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公开(公告)号：US11428646B2
公开(公告)日：2022-08-30
申请号：US17006366
申请日：2020-08-28
摘要： Optical fabrication monitor structures can be included in a design fabricated on a wafer from a mask or fabrication reticle. A first set of components can be formed in an initial fabrication cycle, where the first set includes functional components and monitor structures. A second set of components can be formed by subsequent fabrication processes that can potentially cause errors or damage to the first set of components. The monitor structures can be implemented during fabrication (e.g., in a cleanroom) to detect fabrication errors without pulling or scrapping the wafer.
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公开(公告)号：US20240348006A1
公开(公告)日：2024-10-17
申请号：US18753137
申请日：2024-06-25
发明人： John Parker , Molly Piels , Hanxing Shi
CPC分类号： H01S5/026 , G02B6/4266 , H01S5/0085 , H01S5/12 , H01S5/042
摘要： A symmetric distributed feedback (DFB) laser that is integrated in a silicon based photonic integrated circuit can output light from both sides of the symmetric DFB laser onto waveguides. The light in the waveguides can be phase adjusted and combined using an optical coupler. The symmetric DFB laser can generate light and symmetrically output light onto different lanes of a multi-lane transmitter.
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公开(公告)号：US11914264B2
公开(公告)日：2024-02-27
申请号：US17065118
申请日：2020-10-07
CPC分类号： G02F1/2257 , G02F1/0147 , G02F1/025 , G02F1/3135 , G02F2203/15
摘要： Photonic ring modulators with high tuning efficiency and small footprint can be formed in a hybrid material platform from a silicon bus waveguide vertically coupled to an optically active compound semiconductor (e.g., III-V) ring resonator. The performance of the modulator, e.g., in terms of the tuning efficiency and the maximum insertion loss, may be optimized by suitable levels of an applied bias voltage and a heater power of a heater optionally included in the ring modulator. The disclosed hybrid photonic ring modulators may be used, e.g., in photonic transceiver circuits with high lane count.
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公开(公告)号：US11815725B1
公开(公告)日：2023-11-14
申请号：US17554425
申请日：2021-12-17
发明人： Brandon W. Buckley , Brian Robert Koch , John Garcia , Jared Bauters , Sudharsanan Srinivasan , Anand Ramaswamy
CPC分类号： G02B6/4227 , G02B6/12 , G02B6/30 , G02B6/43 , H04B10/25891 , H04B10/40
摘要： An example photonic integrated circuit includes a transmitter circuit with a optical communication path to an optical coupler configured to couple with an optical fiber. The optical communication path has a propagation direction away from the transmitter circuit and towards the optical coupler. A counter-propagating tap diverts light sent by a light source backward against the propagation direction of the optical communication path. A photodiode receives the diverted light and measures its power level. The photodiode generates a feedback signal for the optical coupler and provides the feedback signal to the optical coupler. The optical coupler receives the feedback signal and adjusts a coupling alignment of the optical communication path to the optical fiber based on the feedback signal, which indicates the measured power level of the diverted counter-propagating light.
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