Patents by Inventor Andres David BARBOSA NEIRA
Andres David BARBOSA NEIRA has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11443764Abstract: An apparatus includes a slider configured for heat-assisted magnetic recording. The slider includes an input coupler configured to receive light excited by a light source. The slider includes a waveguide core tapering along a light propagation direction from a first cross-sectional width to a second cross-sectional width, the waveguide configured to provide a surface plasmon-enhanced near-field radiation pattern proximate an output end in response to the received light. One or more cladding layers surround the waveguide core. At least one strip of plasmonic material is disposed between the waveguide core and at least one of the one or more cladding layers.Type: GrantFiled: March 4, 2019Date of Patent: September 13, 2022Assignee: Seagate Technology LLCInventors: Choon How Gan, Mark Anthony Gubbins, Beverley Rutherford McConnell, Martin Peter McCurry, Michael James Hardy, Andres David Barbosa Neira, Fadi El Hallak, Anil Kumar Puri
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Patent number: 10403313Abstract: An apparatus includes a slider configured for heat-assisted magnetic recording. The slider comprises an input coupler configured to receive light excited by a light source and a waveguide. The waveguide comprises a waveguide core tapering along a light propagation direction from a first cross-sectional width to a second cross-sectional width. The second cross sectional width is smaller than the first cross sectional width. The waveguide core comprises a trench at an output end. The waveguide comprises at least one cladding layer surrounding the waveguide core. The waveguide is configured to provide a surface plasmon-enhanced near-field radiation pattern proximate the output end in response to the received light.Type: GrantFiled: May 29, 2018Date of Patent: September 3, 2019Assignee: Seagate Technology LLCInventors: Choon How Gan, Mark Anthony Gubbins, Roberto Fernandez Garcia, Michael James Hardy, Andres David Barbosa Neira, Yuhang Cheng, Weibin Chen
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Patent number: 10403310Abstract: An apparatus comprises a slider configured for heat-assisted magnetic recording. A near-field transducer comprising a peg is situated at or near an air bearing surface of the slider, and an optical waveguide of the slider is configured to couple light from a light source to the near-field transducer. The peg comprises a hyperbolic metamaterial, and the near-field transducer may further include an enlarged portion from which the peg extends, where the enlarged portion may also comprise a hyperbolic metamaterial.Type: GrantFiled: July 16, 2018Date of Patent: September 3, 2019Assignee: Seagate Technology LLCInventors: Andres David Barbosa Neira, Roberto Fernandez Garcia, Michael James Hardy, Choon How Gan, Mark Anthony Gubbins, Florin Zavaliche, Tong Zhao, Martin Giles Blaber
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Patent number: 10288977Abstract: A plasmonic switching device and method of providing a plasmonic switching device. An example device includes a resonant cavity and an electromagnetic radiation feed arranged to couple electromagnetic radiation into the resonant cavity and at least one plasmonic mode. The resonant cavity is arranged to be switchable between: a first state in which the resonant cavity has an operational characteristic selected to allow resonance of the electromagnetic radiation at a frequency of the at least one plasmonic mode; and a second state in which the operational characteristic of the resonant cavity is adjusted to inhibit resonance of the electromagnetic radiation at a frequency of the at least one plasmonic mode.Type: GrantFiled: June 2, 2017Date of Patent: May 14, 2019Assignee: KING'S COLLEGE LONDONInventors: Gregory Wurtz, Anatoly Zayats, Cillian McPolin, Andres David Barbosa Neira, Pavel Ginzburg
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Patent number: 10127935Abstract: An apparatus includes a slider configured for heat-assisted magnetic recording. An input coupler of the slider is configured to-receive light produced by a light source. A waveguide of the slider comprises a waveguide core tapering from a first portion having a first cross sectional width to a second portion having a second cross sectional width along the light propagation direction. The second cross sectional width being smaller than the first cross sectional width, and the second portion having an output end. The waveguide includes at least one cladding layer comprising a metallic material. The at least one cladding layer surrounds at least the core. The at least one cladding layer is configured to sink heat away from the waveguide core. The waveguide is configured to provide a surface plasmon-enhanced near-field radiation pattern proximate the output end in response to the light received at the transducer region.Type: GrantFiled: October 16, 2017Date of Patent: November 13, 2018Assignee: Seagate Technology LLCInventors: Roberto Fernandez Garcia, Andres David Barbosa Neira, Michael James Hardy, Mark Anthony Gubbins
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Patent number: 10115423Abstract: A near-field transducer has an enlarged portion with a peg extending towards a media-facing surface. Two reflectors are located co-planar with near-field transducer and located on either side of the near-field transducer in a crosstrack direction. The two reflectors are separated by a gap proximate the peg of the near-field transducer. The two reflectors each include a first edge at the media facing surface and a second edge at an acute angle to the media-facing surface. The second edge faces the near-field transducer. The two reflectors concentrate the light on the peg of the near-field transducer.Type: GrantFiled: October 3, 2017Date of Patent: October 30, 2018Assignee: Seagate Technology LLCInventors: Mark Anthony Gubbins, Choon How Gan, Roberto Fernandez Garcia, Michael James Hardy, Andres David Barbosa Neira
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Patent number: 10026421Abstract: An apparatus comprises a slider configured for heat-assisted magnetic recording. A near-field transducer comprising a peg is situated at or near an air bearing surface of the slider, and an optical waveguide of the slider is configured to couple light from a light source to the near-field transducer. The peg comprises a hyperbolic metamaterial, and the near-field transducer may further include an enlarged portion from which the peg extends, where the enlarged portion may also comprise a hyperbolic metamaterial.Type: GrantFiled: February 21, 2017Date of Patent: July 17, 2018Assignee: Seagate Technology LLCInventors: Andres David Barbosa Neira, Roberto Fernandez Garcia, Michael James Hardy, Choon How Gan, Mark Anthony Gubbins, Florin Zavaliche, Tong Zhao, Martin Giles Blaber
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Publication number: 20180108373Abstract: An apparatus includes a slider configured for heat-assisted magnetic recording. An input coupler of the slider is configured to-receive light produced by a light source. A waveguide of the slider comprises a waveguide core tapering from a first portion having a first cross sectional width to a second portion having a second cross sectional width along the light propagation direction. The second cross sectional width being smaller than the first cross sectional width, and the second portion having an output end. The waveguide includes at least one cladding layer comprising a metallic material. The at least one cladding layer surrounds at least the core. The at least one cladding layer is configured to sink heat away from the waveguide core. The waveguide is configured to provide a surface plasmon-enhanced near-field radiation pattern proximate the output end in response to the light received at the transducer region.Type: ApplicationFiled: October 16, 2017Publication date: April 19, 2018Inventors: Roberto Fernandez Garcia, Andres David Barbosa Neira, Michael James Hardy, Mark Anthony Gubbins
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Patent number: 9934800Abstract: A waveguide has a first cladding layer surrounding a near-field transducer. A core of the waveguide is disposed on the first cladding layer, and a second cladding layer is disposed on the core opposite the first cladding layer. A coupler is formed of a second plasmonic material and disposed in the waveguide such that a first edge of the coupler is proximate a media-facing surface and a first side of the coupler faces and is spaced apart from a peg of the near-field transducer in a downtrack direction.Type: GrantFiled: February 17, 2017Date of Patent: April 3, 2018Assignee: SEAGATE TECHNOLOGY LLCInventors: Andres David Barbosa Neira, Roberto Fernandez Garcia, Michael James Hardy, Mark Anthony Gubbins, Martin Giles Blaber
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Publication number: 20170277011Abstract: A plasmonic switching device and method of providing a plasmonic switching device. An example device includes a resonant cavity and an electromagnetic radiation feed arranged to couple electromagnetic radiation into the resonant cavity and at least one plasmonic mode. The resonant cavity is arranged to be switchable between: a first state in which the resonant cavity has an operational characteristic selected to allow resonance of the electromagnetic radiation at a frequency of the at least one plasmonic mode; and a second state in which the operational characteristic of the resonant cavity is adjusted to inhibit resonance of the electromagnetic radiation at a frequency of the at least one plasmonic mode.Type: ApplicationFiled: June 2, 2017Publication date: September 28, 2017Inventors: Gregory WURTZ, Anatoly ZAYATS, Cillian MCPOLIN, Andres David BARBOSA NEIRA, Pavel GINZBURG
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Patent number: 9696603Abstract: A plasmonic switching device and method of providing a plasmonic switching device. An example device includes a resonant cavity and an electromagnetic radiation feed arranged to couple electromagnetic radiation into the resonant cavity and at least one plasmonic mode. The resonant cavity is arranged to be switchable between: a first state in which the resonant cavity has an operational characteristic selected to allow resonance of the electromagnetic radiation at a frequency of the at least one plasmonic mode; and a second state in which the operational characteristic of the resonant cavity is adjusted to inhibit resonance of the electromagnetic radiation at a frequency of the at least one plasmonic mode.Type: GrantFiled: January 9, 2015Date of Patent: July 4, 2017Assignee: KING'S COLLEGE LONDONInventors: Gregory Wurtz, Anatoly Zayats, Cillian McPolin, Andres David Barbosa Neira, Pavel Ginzburg
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Publication number: 20160349594Abstract: A plasmonic switching device and method of providing a plasmonic switching device. An example device includes a resonant cavity and an electromagnetic radiation feed arranged to couple electromagnetic radiation into the resonant cavity and at least one plasmonic mode. The resonant cavity is arranged to be switchable between: a first state in which the resonant cavity has an operational characteristic selected to allow resonance of the electromagnetic radiation at a frequency of the at least one plasmonic mode; and a second state in which the operational characteristic of the resonant cavity is adjusted to inhibit resonance of the electromagnetic radiation at a frequency of the at least one plasmonic mode.Type: ApplicationFiled: January 9, 2015Publication date: December 1, 2016Inventors: Gregory WURTZ, Anatoly ZAYATS, Cillian MCPOLIN, Andres David BARBOSA NEIRA, Pavel GINZBURG