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公开(公告)号：US20230117802A1
公开(公告)日：2023-04-20
申请号：US18083716
申请日：2022-12-19
Applicant: GlobalFoundries U.S. Inc.
Inventor： Yusheng Bian , Roderick A. Augur , Kenneth J. Giewont , Karen Nummy
Abstract: 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：US20230073958A1
公开(公告)日：2023-03-09
申请号：US18055576
申请日：2022-11-15
Applicant: GlobalFoundries U.S. Inc.
Inventor： Michal Rakowski , Petar I. Todorov , Yusheng Bian , Won Suk Lee , Asif J. Chowdhury , Kenneth J. Giewont
Abstract: Disclosed is a photonic structure and associated method. The structure includes a closed-curve waveguide having a first height, as measured from the top surface of an insulator layer, and an outer curved sidewall that extends essentially vertically the full first height (e.g., to minimize signal loss). The structure includes a closed-curve thermal coupler and a heating element. The closed-curve thermal coupler is thermally coupled to and laterally surrounded by the closed-curve waveguide and has a second height that is less than the first height. In some embodiments, the closed-curve waveguide and the closed-curve thermal coupler are continuous portions of the same semiconductor layer having different thicknesses. The heating element is thermally coupled to the closed-curve thermal coupler and thereby indirectly thermally coupled to the closed-curve waveguide. Thus, the heating element is usable for thermally tuning the closed-curve waveguide via the closed-curve thermal coupler to minimize any temperature-dependent resonance shift (TDRS).
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公开(公告)号：US11567261B2
公开(公告)日：2023-01-31
申请号：US17173639
申请日：2021-02-11
Applicant: GLOBALFOUNDRIES U.S. Inc.
Inventor： Yusheng Bian , Roderick A. Augur , Kenneth J. Giewont , Karen Nummy
Abstract: 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：US20220229250A1
公开(公告)日：2022-07-21
申请号：US17151955
申请日：2021-01-19
Applicant: GLOBALFOUNDRIES U.S. Inc.
Inventor： Yusheng Bian , Roderick A. Augur , Kenneth J. Giewont , Karen Nummy
Abstract: Structures including an edge coupler and methods of forming a structure including an edge coupler. The structure includes a waveguide core over a dielectric layer and a back-end-of-line stack over the dielectric layer and the waveguide core. The back-end-of-line stack includes a side edge and a truncated layer that is overlapped with a tapered section of the waveguide core. The truncated layer has a first end surface adjacent to the side edge and a second end surface above the tapered section of the waveguide core. The truncated layer is tapered from the first end surface to the second end surface.
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公开(公告)号：US11803012B2
公开(公告)日：2023-10-31
申请号：US18055576
申请日：2022-11-15
Applicant: GlobalFoundries U.S. Inc.
Inventor： Michal Rakowski , Petar I. Todorov , Yusheng Bian , Won Suk Lee , Asif J. Chowdhury , Kenneth J. Giewont
CPC classification number: G02B6/125 , G02F1/0147 , G02B6/136 , G02B2006/12061 , G02B2006/12147
Abstract: Disclosed is a photonic structure and associated method. The structure includes a closed-curve waveguide having a first height, as measured from the top surface of an insulator layer, and an outer curved sidewall that extends essentially vertically the full first height (e.g., to minimize signal loss). The structure includes a closed-curve thermal coupler and a heating element. The closed-curve thermal coupler is thermally coupled to and laterally surrounded by the closed-curve waveguide and has a second height that is less than the first height. In some embodiments, the closed-curve waveguide and the closed-curve thermal coupler are continuous portions of the same semiconductor layer having different thicknesses. The heating element is thermally coupled to the closed-curve thermal coupler and thereby indirectly thermally coupled to the closed-curve waveguide. Thus, the heating element is usable for thermally tuning the closed-curve waveguide via the closed-curve thermal coupler to minimize any temperature-dependent resonance shift (TDRS).
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Patent Agency Ranking
公开(公告)号：US20220252790A1
公开(公告)日：2022-08-11
申请号：US17169971
申请日：2021-02-08
Applicant: GLOBALFOUNDRIES U.S. Inc.
Inventor： Kevin K. Dezfulian , Yusheng Bian , Kenneth J. Giewont , Karen Nummy
IPC: G02B6/30
Abstract: Structures including an edge coupler and methods of fabricating a structure including an edge coupler. The structure includes a dielectric layer including an edge, a waveguide core region on the dielectric layer, and multiple segments on the dielectric layer. The waveguide core region has an end surface, and the waveguide core region is lengthwise tapered toward the end surface. The segments are positioned between the waveguide core region and the edge of the dielectric layer. A waveguide core has a section positioned over the waveguide core region in an overlapping arrangement. The waveguide core has an end surface, and the section of the waveguide core is lengthwise tapered toward the end surface.
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公开(公告)号：US20220221650A1
公开(公告)日：2022-07-14
申请号：US17146864
申请日：2021-01-12
Applicant: GLOBALFOUNDRIES U.S. Inc.
Inventor： Yusheng Bian , Roderick A. Augur , Kenneth J. Giewont , Karen Nummy , Edward Kiewra , Steven M. Shank
Abstract: Structures including a grating coupler and methods of fabricating a structure including a grating coupler. The structure includes structure includes a dielectric layer on a substrate, a first waveguide core positioned in a first level over the dielectric layer, and a second waveguide core positioned in a second level over the dielectric layer. The second level differs in elevation above the dielectric layer from the first level. The first waveguide core includes a tapered section. The structure further includes a grating coupler having a plurality of segments positioned in the second level adjacent to the second waveguide core. The segments of the grating coupler and the tapered section of the first waveguide core are positioned in an overlapping arrangement.
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公开(公告)号：US20250085491A1
公开(公告)日：2025-03-13
申请号：US18243701
申请日：2023-09-08
Applicant: GlobalFoundries U.S. Inc.
Inventor： Yusheng Bian , Theodore Letavic , Kenneth J. Giewont , Kevin Dezfulian , Koushik Ramachandran
Abstract: Photonic structures including multiple input/output optical couplers and methods of forming such photonic structures. The photonic structure comprises a light source and a photonics chip including a semiconductor substrate. The photonic structure further comprises a first mirror disposed at a first height relative to a top surface of the semiconductor substrate and a second mirror disposed at a second height relative to the top surface of the semiconductor substrate. The first mirror is configured to reflect first light from the light source to the photonics chip, and the second mirror is configured to reflect second light from the light source to the photonics chip. The first mirror is disposed between the second mirror and the light source, and the second height is different from the first height.
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公开(公告)号：US11531164B2
公开(公告)日：2022-12-20
申请号：US17169971
申请日：2021-02-08
Applicant: GLOBALFOUNDRIES U.S. Inc.
Inventor： Kevin K. Dezfulian , Yusheng Bian , Kenneth J. Giewont , Karen Nummy
Abstract: Structures including an edge coupler and methods of fabricating a structure including an edge coupler. The structure includes a dielectric layer including an edge, a waveguide core region on the dielectric layer, and multiple segments on the dielectric layer. The waveguide core region has an end surface, and the waveguide core region is lengthwise tapered toward the end surface. The segments are positioned between the waveguide core region and the edge of the dielectric layer. A waveguide core has a section positioned over the waveguide core region in an overlapping arrangement. The waveguide core has an end surface, and the section of the waveguide core is lengthwise tapered toward the end surface.
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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
Applicant: GLOBALFOUNDRIES U.S. Inc.
Inventor： Yusheng Bian , Roderick A. Augur , Kenneth J. Giewont , Karen Nummy
Abstract: 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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