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公开(公告)号：US20220299706A1
公开(公告)日：2022-09-22
申请号：US17202729
申请日：2021-03-16
发明人： Yusheng Bian , Michal Rakowski , Roderick A. Augur , Marios Papadovasilakis , Sujith Chandran , Jaime Viegas , Yonas Gebregiorgis
摘要： Structures for a wavelength-division multiplexing filter and methods of forming a structure for a wavelength-division multiplexing filter. A waveguide core of the wavelength-division multiplexing filter includes a first bend having a first curvature and a second bend having a second curvature different than the first curvature. The structure further includes a waveguide core region having a first end surface, a second end surface, and a bend arranged between the first and second end surfaces. The bend is positioned over the first bend of the waveguide core in an overlapping relationship.
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公开(公告)号：US20220252785A1
公开(公告)日：2022-08-11
申请号：US17173639
申请日：2021-02-11
摘要： Structures for an edge coupler and methods of forming a structure for an edge coupler. The structure includes a waveguide core over a dielectric layer, and a back-end-of-line stack over the waveguide core and the dielectric layer. The back-end-of-line stack includes an interlayer dielectric layer, a side edge, a first feature, a second feature, and a third feature laterally arranged between the first feature and the second feature. The first feature, the second feature, and the third feature are positioned on the interlayer dielectric layer adjacent to the side edge, and the third feature has an overlapping relationship with a tapered section of the waveguide core.
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公开(公告)号：US11378749B2
公开(公告)日：2022-07-05
申请号：US17095865
申请日：2020-11-12
发明人： Yusheng Bian
摘要： Structures for an optical power splitter and methods of forming a structure for an optical power splitter. A first waveguide core includes a portion positioned over a multimode interference region, a second waveguide core includes a portion positioned over the multimode interference region, and a third waveguide core includes a portion positioned over the multimode interference region. The first waveguide core provides an input port to the optical power splitter. The second waveguide core provides a first output port from the optical power splitter, and the third waveguide core provides a second output port from the optical power splitter.
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公开(公告)号：US20220146863A1
公开(公告)日：2022-05-12
申请号：US17092793
申请日：2020-11-09
发明人： Bartlomiej J. Pawlak , Yusheng Bian
IPC分类号： G02F1/01
摘要： Structures for an optical power modulator and methods of fabricating a structure for an optical power modulator. A waveguide core includes a longitudinal axis, a first section, and a second section spaced from the first section along the longitudinal axis. An active layer includes a portion positioned along the longitudinal axis between the first section and the second section of the waveguide core. The active layer contains a material configured to have a first state with a first refractive index in response to an applied stimulus and a second state with a second refractive index different from the first refractive index.
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公开(公告)号：US11309447B2
公开(公告)日：2022-04-19
申请号：US16727321
申请日：2019-12-26
IPC分类号： H01L31/107 , H01L31/18 , H01L31/028 , H01L31/0352
摘要： One illustrative photodiode disclosed herein includes an N-doped anode region, a P-doped cathode region and at least one P-doped charge region positioned laterally between the N-doped anode region and the P-doped cathode region. In this example, the photodiode also includes a plurality of quantum dots embedded within the at least one P-doped charge region and an N-doped impact ionization region positioned laterally between the N-doped anode region and the at least one P-doped charge region.
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公开(公告)号：US20220115546A1
公开(公告)日：2022-04-14
申请号：US17065839
申请日：2020-10-08
发明人： Abdelsalam Aboketaf , Yusheng Bian
IPC分类号： H01L31/0232 , H01L31/102 , H01L31/18
摘要： Structures for a photodetector and methods of fabricating a structure for a photodetector. A photodetector includes a photodetector pad coupled to a waveguide core and a light-absorbing layer coupled to the photodetector pad. The light-absorbing layer has a body, a first taper that projects laterally from the body toward the waveguide core, and a second taper that projects laterally from the body toward the waveguide core. The photodetector pad includes a tapered section that is laterally positioned between the first taper and the second taper of the light-absorbing layer.
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公开(公告)号：US11287719B2
公开(公告)日：2022-03-29
申请号：US16922233
申请日：2020-07-07
发明人： Yusheng Bian
摘要： Structures including a grating coupler and methods of forming a structure that includes a grating coupler. The grating coupler includes segments that are positioned with a spaced relationship on a slab layer. The segments contain an active material configured to have a first state with a first refractive index and a second state with a second refractive index in response to an applied stimulus. The first and second states may be produced by applying different sets of bias voltages to the segments as the applied stimulus.
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公开(公告)号：US11269142B2
公开(公告)日：2022-03-08
申请号：US16837149
申请日：2020-04-01
发明人： Yusheng Bian , Bo Peng
摘要： Structures for an optical coupler and methods of fabricating a structure for an optical coupler. A coupling section has a plurality of segments arranged with a pitch, a first waveguide core has a section extending longitudinally over the first plurality of segments of the coupling section, and a second waveguide core has a section extending longitudinally over the coupling section. The section of the second waveguide core laterally spaced from the section of the first waveguide core by a given distance.
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公开(公告)号：US11256030B1
公开(公告)日：2022-02-22
申请号：US17063103
申请日：2020-10-05
摘要： Structures for an optical power splitter and methods of forming a structure for an optical power splitter. A first waveguide core provides an input port, and second and third waveguide cores provide respective output ports. A non-linear waveguide taper is coupled to the first waveguide core at a first interface and is coupled to the second and third waveguide cores at a second interface. The non-linear waveguide taper includes a first curved section having a first width dimension that increases with increasing longitudinal distance from the first interface. The non-linear waveguide taper includes a second curved section having a second width dimension that increases with increasing longitudinal distance from the second interface. The first and second curved sections join at a longitudinal location at which the first and second width dimensions are each equal to a maximum width of the non-linear waveguide taper.
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公开(公告)号：US20220037545A1
公开(公告)日：2022-02-03
申请号：US17504614
申请日：2021-10-19
IPC分类号： H01L31/0352 , H01L31/0232 , H01L31/18 , H01L31/028 , H01L31/103
摘要： A photodetector disclosed herein includes an N-doped waveguide structure defined in a semiconductor material, wherein the N-doped waveguide structure comprises a plurality of first fins. Each adjacent pair of the plurality of first fins is separated by a trench formed in the semiconductor material. The photodetector also includes a detector structure positioned on the N-doped waveguide structure, wherein a portion of the detector structure is positioned laterally between the plurality of first fins. The detector structure comprises a single crystal semiconductor material. The photodetector also includes a first diffusion region that extends from the bottom surface of the trench into the semiconductor material, wherein the first diffusion region comprises atoms of the single crystal semiconductor material of the detector structure.
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