Patents by Inventor Daniel M. Kuchta
Daniel M. Kuchta 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: 10057665Abstract: Methods and systems for bias control in an optical switch fabric include monitoring optical power at outputs of a plurality of switch elements in an N×N switch fabric that has N inputs, N outputs, and M?2 stages. A bias control of a first of the plurality of switch elements is adjusted. It is determined whether the optical power at the outputs of the first switch element after bias control adjustment conform more closely to a predetermined criterion relative to the monitored optical power at the outputs of the first switch element prior to adjustment. The adjusting and determining steps are repeated for each of the remainder of the plurality of switch elements.Type: GrantFiled: August 29, 2016Date of Patent: August 21, 2018Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Nicolas Dupuis, Daniel M. Kuchta, Benjamin G. Lee, Alexander Rylyakov, Clint L. Schow
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Patent number: 10032730Abstract: Silicon-based or other electronic circuitry is dissolved or otherwise disabled by reactive materials within a semiconductor chip should the chip or a device containing the chip be subjected to tampering. Triggering circuits containing normally-OFF heterojunction field-effect photo-transistors are configured to cause reactions of the reactive materials within the chips upon exposure to light. The normally-OFF heterojunction field-effect photo-transistors can be fabricated during back-end-of-line processing through the use of polysilicon channel material, amorphous hydrogenated silicon gate contacts, hydrogenated crystalline silicon source/drain contacts, or other materials that allow processing at low temperatures.Type: GrantFiled: December 26, 2016Date of Patent: July 24, 2018Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Ali Afzali-Ardakani, Joel P. de Souza, Bahman Hekmatshoartabari, Daniel M. Kuchta, Devendra K. Sadana
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Patent number: 9927574Abstract: An optical component includes a component body, and at least one angled-facet waveguide formed in the component body, wherein the angled-facet waveguide is substantially mirror-symmetrical in shape relative to a line at or near the center of the angled-facet waveguide.Type: GrantFiled: January 31, 2017Date of Patent: March 27, 2018Assignee: International Business Machines CorporationInventors: Russell A. Budd, Daniel M. Kuchta, Benjamin Giles Lee, Laurent Schares, Clint Lee Schow
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Publication number: 20180011246Abstract: A system comprises a first optical component comprising a component body; at least a first waveguide formed in the component body, wherein the first waveguide is substantially mirror-symmetrical in shape relative to a line at or near the center of the first waveguide; and a self-alignment feature configured to assist in optically-coupling the first waveguide with a second waveguide located outside of the component body.Type: ApplicationFiled: September 5, 2017Publication date: January 11, 2018Inventors: Russell A. Budd, Daniel M. Kuchta, Benjamin Giles Lee, Laurent Schares, Clint Lee Schow
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Patent number: 9857531Abstract: A system comprises a first optical component comprising at least one waveguide and at least one self-alignment feature; and a second optical component comprising at least another waveguide and at least another self-alignment feature; wherein the self-alignment feature of the second optical component engage to assist in optically-coupling the waveguide of the first optical component and the waveguide of the second optical component when the first optical component has a manufacturing tolerance in a given geometric dimension and is mounted in the second optical component.Type: GrantFiled: November 3, 2016Date of Patent: January 2, 2018Assignee: International Business Machines CorporationInventors: Russell A. Budd, Daniel M. Kuchta, Benjamin Giles Lee, Laurent Schares, Clint Lee Schow
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Publication number: 20170238075Abstract: Methods and systems for bias control in an optical switch fabric include monitoring optical power at outputs of a plurality of switch elements in an N×N switch fabric that has N inputs, N outputs, and M?2 stages. A bias control of a first of the plurality of switch elements is adjusted. It is determined whether the optical power at the outputs of the first switch element after bias control adjustment conform more closely to a predetermined criterion relative to the monitored optical power at the outputs of the first switch element prior to adjustment. The adjusting and determining steps are repeated for each of the remainder of the plurality of switch elements.Type: ApplicationFiled: August 29, 2016Publication date: August 17, 2017Inventors: Nicolas Dupuis, Daniel M. Kuchta, Benjamin G. Lee, Alexander Rylyakov, Clint L. Schow
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Patent number: 9735879Abstract: Methods an systems for low-power transmission include biasing an emitter in a non-linear operating range of the emitter near a threshold current of the emitter. A data signal is distorted to add a precursor pulse to a rising edge of a data waveform to quickly bring the emitter into a linear operating range. The distorted data signal is transmitted at the emitter.Type: GrantFiled: September 30, 2014Date of Patent: August 15, 2017Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Fuad E. Doany, Daniel M. Kuchta, Jonathan E. Proesel, Alexander V. Rylyakov, Clint L. Schow, Marc A. Taubenblatt
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Patent number: 9658398Abstract: A system comprises a first optical component comprising at least one waveguide and at least one self-alignment feature; and a second optical component comprising at least another waveguide and at least another self-alignment feature; wherein the self-alignment feature of the second optical component engage to assist in optically-coupling the waveguide of the first optical component and the waveguide of the second optical component when the first optical component has a manufacturing tolerance in a given geometric dimension and is mounted in the second optical component.Type: GrantFiled: April 12, 2016Date of Patent: May 23, 2017Assignee: International Business Machines CorporationInventors: Russell A. Budd, Daniel M. Kuchta, Benjamin Giles Lee, Laurent Schares, Clint Lee Schow
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Publication number: 20170139135Abstract: An optical component includes a component body, and at least one angled-facet waveguide formed in the component body, wherein the angled-facet waveguide is substantially mirror-symmetrical in shape relative to a line at or near the center of the angled-facet waveguide.Type: ApplicationFiled: January 31, 2017Publication date: May 18, 2017Inventors: Russell A. Budd, Daniel M. Kuchta, Benjamin Giles Lee, Laurent Schares, Clint Lee Schow
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Patent number: 9645311Abstract: An optical component includes a component body, and at least one angled-facet waveguide formed in the component body, wherein the angled-facet waveguide is substantially mirror-symmetrical in shape relative to a line at or near the center of the angled-facet waveguide.Type: GrantFiled: May 21, 2013Date of Patent: May 9, 2017Assignee: International Business Machines CorporationInventors: Russell A. Budd, Daniel M. Kuchta, Benjamin Giles Lee, Laurent Schares, Clint Lee Schow
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Publication number: 20170117431Abstract: Silicon-based or other electronic circuitry is dissolved or otherwise disabled by reactive materials within a semiconductor chip should the chip or a device containing the chip be subjected to tampering. Triggering circuits containing normally-OFF heterojunction field-effect photo-transistors are configured to cause reactions of the reactive materials within the chips upon exposure to light. The normally-OFF heterojunction field-effect photo-transistors can be fabricated during back-end-of-line processing through the use of polysilicon channel material, amorphous hydrogenated silicon gate contacts, hydrogenated crystalline silicon source/drain contacts, or other materials that allow processing at low temperatures.Type: ApplicationFiled: December 26, 2016Publication date: April 27, 2017Inventors: Ali Afzali-Ardakani, Joel P. de Souza, Bahman Hekmatshoartabari, Daniel M. Kuchta, Devendra K. Sadana
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Publication number: 20170117236Abstract: Silicon-based or other electronic circuitry is dissolved or otherwise disabled by reactive materials within a semiconductor chip should the chip or a device containing the chip be subjected to tampering. Triggering circuits containing normally-OFF heterojunction field-effect photo-transistors are configured to cause reactions of the reactive materials within the chips upon exposure to light. The normally-OFF heterojunction field-effect photo-transistors can be fabricated during back-end-of-line processing through the use of polysilicon channel material, amorphous hydrogenated silicon gate contacts, hydrogenated crystalline silicon source/drain contacts, or other materials that allow processing at low temperatures.Type: ApplicationFiled: December 26, 2016Publication date: April 27, 2017Inventors: Ali Afzali-Ardakani, Joel P. de Souza, Bahman Hekmatshoartabari, Daniel M. Kuchta, Devendra K. Sadana
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Publication number: 20170117237Abstract: Silicon-based or other electronic circuitry is dissolved or otherwise disabled by reactive materials within a semiconductor chip should the chip or a device containing the chip be subjected to tampering. Triggering circuits containing normally-OFF heterojunction field-effect photo-transistors are configured to cause reactions of the reactive materials within the chips upon exposure to light. The normally-OFF heterojunction field-effect photo-transistors can be fabricated during back-end-of-line processing through the use of polysilicon channel material, amorphous hydrogenated silicon gate contacts, hydrogenated crystalline silicon source/drain contacts, or other materials that allow processing at low temperatures.Type: ApplicationFiled: December 26, 2016Publication date: April 27, 2017Inventors: Ali Afzali-Ardakani, Joel P. de Souza, Bahman Hekmatshoartabari, Daniel M. Kuchta, Devendra K. Sadana
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Publication number: 20170108643Abstract: A system comprises a first optical component comprising at least one waveguide and at least one self-alignment feature; and a second optical component comprising at least another waveguide and at least another self-alignment feature; wherein the self-alignment feature of the second optical component engage to assist in optically-coupling the waveguide of the first optical component and the waveguide of the second optical component when the first optical component has a manufacturing tolerance in a given geometric dimension and is mounted in the second optical component.Type: ApplicationFiled: April 12, 2016Publication date: April 20, 2017Inventors: Russell A. Budd, Daniel M. Kuchta, Benjamin Giles Lee, Laurent Schares, Clint Lee Schow
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Patent number: 9608761Abstract: Tuning parameters of individual wavelength channels transmitted over a multimode optical fiber is provided. Characteristics of the multimode optical fiber used for an optical data link within an optical signal transmission system are retrieved. A wavelength channel grid including each central wavelength in a plurality of central wavelengths that corresponds to each particular wavelength channel in a plurality of wavelength channels used to transmit data via optical signals over the multimode optical fiber is determined. A maximum allowable data rate is calculated for each wavelength channel based on the characteristics of the multimode optical fiber at defined channel wavelengths, optical signal transceiver specifications, and data transmission performance requirements for the optical signal transmission system.Type: GrantFiled: June 19, 2015Date of Patent: March 28, 2017Assignee: International Business Machines CorporationInventors: Fuad E. Doany, Daniel M. Kuchta, Benjamin G. Lee, Petar K. Pepeljugoski, Clint L. Schow, Mehmet Soyuer
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Publication number: 20170082798Abstract: A system comprises a first optical component comprising at least one waveguide and at least one self-alignment feature; and a second optical component comprising at least another waveguide and at least another self-alignment feature; wherein the self-alignment feature of the second optical component engage to assist in optically-coupling the waveguide of the first optical component and the waveguide of the second optical component when the first optical component has a manufacturing tolerance in a given geometric dimension and is mounted in the second optical component.Type: ApplicationFiled: November 3, 2016Publication date: March 23, 2017Inventors: Russell A. Budd, Daniel M. Kuchta, Benjamin Giles Lee, Laurent Schares, Clint Lee Schow
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Patent number: 9584225Abstract: Tuning parameters of individual wavelength channels transmitted over a multimode optical fiber is provided. Characteristics of the multimode optical fiber used for an optical data link within an optical signal transmission system are retrieved. A wavelength channel grid including each central wavelength in a plurality of central wavelengths that corresponds to each particular wavelength channel in a plurality of wavelength channels used to transmit data via optical signals over the multimode optical fiber is determined. A maximum allowable data rate is calculated for each wavelength channel based on the characteristics of the multimode optical fiber at defined channel wavelengths, optical signal transceiver specifications, and data transmission performance requirements for the optical signal transmission system.Type: GrantFiled: March 11, 2015Date of Patent: February 28, 2017Assignee: International Business Machines CorporationInventors: Fuad E. Doany, Daniel M. Kuchta, Benjamin G. Lee, Petar K. Pepeljugoski, Clint L. Schow, Mehmet Soyuer
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Patent number: 9553056Abstract: Silicon-based or other electronic circuitry is dissolved or otherwise disabled by reactive materials within a semiconductor chip should the chip or a device containing the chip be subjected to tampering. Triggering circuits containing normally-OFF heterojunction field-effect photo-transistors are configured to cause reactions of the reactive materials within the chips upon exposure to light. The normally-OFF heterojunction field-effect photo-transistors can be fabricated during back-end-of-line processing through the use of polysilicon channel material, amorphous hydrogenated silicon gate contacts, hydrogenated crystalline silicon source/drain contacts, or other materials that allow processing at low temperatures.Type: GrantFiled: October 27, 2015Date of Patent: January 24, 2017Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Ali Afzali-Ardakani, Joel P. de Souza, Bahman Hekmatshoartabari, Daniel M. Kuchta, Devendra K. Sadana
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Patent number: 9485552Abstract: Methods and systems for bias control in an optical switch fabric include monitoring optical power at outputs of a plurality of switch elements in an N×N switch fabric that has N inputs, N outputs, and M?2 stages. A bias control of a first of the plurality of switch elements is adjusted. It is determined whether the optical power at the outputs of the first switch element after bias control adjustment conform more closely to a predetermined criterion relative to the monitored optical power at the outputs of the first switch element prior to adjustment. The adjusting and determining steps are repeated for each of the remainder of the plurality of switch elements.Type: GrantFiled: January 28, 2016Date of Patent: November 1, 2016Assignee: INTERNATIONAL BUISNESS MACHINES CORPORATIONInventors: Nicolas Dupuis, Daniel M. Kuchta, Benjamin G. Lee, Alexander Rylyakov, Clint L. Schow
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Publication number: 20160269141Abstract: Tuning parameters of individual wavelength channels transmitted over a multimode optical fiber is provided. Characteristics of the multimode optical fiber used for an optical data link within an optical signal transmission system are retrieved. A wavelength channel grid including each central wavelength in a plurality of central wavelengths that corresponds to each particular wavelength channel in a plurality of wavelength channels used to transmit data via optical signals over the multimode optical fiber is determined. A maximum allowable data rate is calculated for each wavelength channel based on the characteristics of the multimode optical fiber at defined channel wavelengths, optical signal transceiver specifications, and data transmission performance requirements for the optical signal transmission system.Type: ApplicationFiled: June 19, 2015Publication date: September 15, 2016Inventors: Fuad E. Doany, Daniel M. Kuchta, Benjamin G. Lee, Petar K. Pepeljugoski, Clint L. Schow, Mehmet Soyuer