Patents by Inventor Clint L. Schow
Clint L. Schow 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: 10687126Abstract: 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, each switch element having a respective unique radio frequency tone. A bias control of each of the plurality of switch elements is adjusted. It is determined whether the optical power at the outputs of each respective switch element after bias control adjustment conform more closely to a predetermined criterion relative to the monitored optical power at the outputs of the respective switch element prior to adjustment.Type: GrantFiled: June 8, 2018Date of Patent: June 16, 2020Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Nicolas Dupuis, Daniel M. Kuchta, Benjamin G. Lee, Alexander Rylyakov, Clint L. Schow
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Patent number: 10663770Abstract: A device and method of optical equalization using an optical modulator is provided. An electrical modulation signal is split into a first modulation signal and a second modulation signal. The second modulation signal is delayed relative to the first modulation signal. An amplitude of the second modulation signal is attenuated relative to the first modulation signal. The first modulation signal is applied to a first waveguide segment of the optical modulator. The second modulation signal that is delayed and attenuated relative to the first modulation signal is applied to a second waveguide segment of the optical modulator. Both the applied first and second modulation signals generate a feed-forward equalized optical signal that is recombined in the optical domain.Type: GrantFiled: June 7, 2018Date of Patent: May 26, 2020Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Nicolas Dupuis, Tam N. Huynh, Benjamin G. Lee, Jonathan E. Proesel, Renato Rimolo-Donadio, Alexander V. Rylyakov, Clint L. Schow
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Publication number: 20200137467Abstract: 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, each switch element having a respective unique radio frequency tone. A bias control of each of the plurality of switch elements is adjusted. It is determined whether the optical power at the outputs of each respective switch element after bias control adjustment conform more closely to a predetermined criterion relative to the monitored optical power at the outputs of the respective switch element prior to adjustment.Type: ApplicationFiled: June 8, 2018Publication date: April 30, 2020Inventors: Nicolas Dupuis, Daniel M. Kuchta, Benjamin G. Lee, Alexander Rylyakov, Clint L. Schow
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Patent number: 10484125Abstract: A communication system includes first and second devices. The first device includes a first transmitter and a first receiver. The first transmitter transmits one data of a first type using one or more first channels over a first communication link to the second device. The first receiver receives one data of a second type, from the second device, using one or more second channels over the first communication link. The second device includes a second transmitter and a second receiver. The second receiver receives the one data of the first type using the one or more first channels over the first communication link, and to generate the one data of the second type based on the one data of the first type. The second transmitter transmits the one data of the second type using one or more second channels over the first communication link to the first device.Type: GrantFiled: November 2, 2018Date of Patent: November 19, 2019Assignee: International Business Machines CorporationInventors: Alan F. Benner, Douglas M. Freimuth, Benjamin G. Lee, Fabrizio Petrini, Laurent Schares, Clint L. Schow, Mehmet Soyuer
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Publication number: 20190158210Abstract: A communication system includes first and second devices. The first device includes a first transmitter and a first receiver. The first transmitter transmits one data of a first type using one or more first channels over a first communication link to the second device. The first receiver receives one data of a second type, from the second device, using one or more second channels over the first communication link. The second device includes a second transmitter and a second receiver. The second receiver receives said one data of the first type using the one or more first channels over the first communication link, and to generate said one data of the second type based on said one data of the first type. The second transmitter transmits said one data of the second type using one or more second channels over the first communication link to the first device.Type: ApplicationFiled: November 2, 2018Publication date: May 23, 2019Inventors: Alan F. Benner, Douglas M. Freimuth, Benjamin G. Lee, Fabrizio Petrini, Laurent Schares, Clint L. Schow, Mehmet Soyuer
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Patent number: 10148386Abstract: A communication system includes first and second devices. The first device includes a first transmitter and a first receiver. The first transmitter transmits one data of a first type using one or more first channels over a first communication link to the second device. The first receiver receives one data of a second type, from the second device, using one or more second channels over the first communication link. The second device includes a second transmitter and a second receiver. The second receiver receives the one data of the first type using the one or more first channels over the first communication link, and to generate the one data of the second type based on the one data of the first type. The second transmitter transmits the one data of the second type using one or more second channels over the first communication link to the first device.Type: GrantFiled: September 16, 2016Date of Patent: December 4, 2018Assignee: International Business Machines CorporationInventors: Alan F. Benner, Douglas M. Freimuth, Benjamin G. Lee, Fabrizio Petrini, Laurent Schares, Clint L. Schow, Mehmet Soyuer
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Patent number: 10148356Abstract: A method for transmitting data between a first device and a second device over a communication link includes transmitting, by the first device, data of a first type using one or more first channels, receiving, by the second device, the data of the first type from the first device using the one or more first channels, generating, by the second device, data of a second type based on the data of the first type, and transmitting, by the second device, the generated data of the second type using one or more second channels. The data of the first type and the data of the second type are different. The one or more second channels are channels dedicated to transmit the data of the second type.Type: GrantFiled: September 16, 2016Date of Patent: December 4, 2018Assignee: International Business Machines CorporationInventors: Alan F. Benner, Douglas M. Freimuth, Benjamin G. Lee, Fabrizio Petrini, Laurent Schares, Clint L. Schow, Mehmet Soyuer
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Patent number: 10120210Abstract: A device and method of optical equalization using an optical modulator is provided. An electrical modulation signal is split into a first modulation signal and a second modulation signal. The second modulation signal is delayed relative to the first modulation signal. An amplitude of the second modulation signal is attenuated relative to the first modulation signal. The first modulation signal is applied to a first waveguide segment of the optical modulator. The second modulation signal that is delayed and attenuated relative to the first modulation signal is applied to a second waveguide segment of the optical modulator. Both the applied first and second modulation signals generate a feed-forward equalized optical signal that is recombined in the optical domain.Type: GrantFiled: December 20, 2016Date of Patent: November 6, 2018Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Nicolas Dupuis, Tam N. Huynh, Benjamin G. Lee, Jonathan E. Proesel, Renato Rimolo-Donadio, Alexander V. Rylyakov, Clint L. Schow
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Publication number: 20180292682Abstract: A device and method of optical equalization using an optical modulator is provided. An electrical modulation signal is split into a first modulation signal and a second modulation signal. The second modulation signal is delayed relative to the first modulation signal. An amplitude of the second modulation signal is attenuated relative to the first modulation signal. The first modulation signal is applied to a first waveguide segment of the optical modulator. The second modulation signal that is delayed and attenuated relative to the first modulation signal is applied to a second waveguide segment of the optical modulator. Both the applied first and second modulation signals generate a feed-forward equalized optical signal that is recombined in the optical domain.Type: ApplicationFiled: June 7, 2018Publication date: October 11, 2018Inventors: Nicolas Dupuis, Tam N. Huynh, Benjamin G. Lee, Jonathan E. Proesel, Renato Rimolo-Donadio, Alexander V. Rylyakov, Clint L. Schow
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Patent number: 10084619Abstract: A method and system of optical communication are provided. An optical modulator device includes a first and a second waveguide segment, and is configured to modulate an incident optical signal. A first feed-forward equalization (FFE) circuit including an inner first tap and an inner second tap, is configured to equalize the first waveguide segment. A second FFE circuit including a first inner tap and a second inner tap, is configured to equalize the second waveguide segment. An FFE recombination of the first inner tap and the second inner tap of the first and second FFE circuits, is in the electrical domain, respectively. An FFE recombination of the first and second modulation signals, operative to equalize a combination of the first second waveguide segments, is in the optical domain.Type: GrantFiled: December 20, 2016Date of Patent: September 25, 2018Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Nicolas Dupuis, Tam N. Huynh, Benjamin G. Lee, Jonathan E. Proesel, Renato Rimolo-Donadio, Alexander V. Rylyakov, Clint L. Schow
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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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Publication number: 20180083727Abstract: A communication system includes first and second devices. The first device includes a first transmitter and a first receiver. The first transmitter transmits one data of a first type using one or more first channels over a first communication link to the second device. The first receiver receives one data of a second type, from the second device, using one or more second channels over the first communication link. The second device includes a second transmitter and a second receiver. The second receiver receives said one data of the first type using the one or more first channels over the first communication link, and to generate said one data of the second type based on said one data of the first type. The second transmitter transmits said one data of the second type using one or more second channels over the first communication link to the first device.Type: ApplicationFiled: September 16, 2016Publication date: March 22, 2018Inventors: Alan F. Benner, Douglas M. Freimuth, Benjamin G. Lee, Fabrizio Petrini, Laurent Schares, Clint L. Schow, Mehmet Soyuer
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Publication number: 20180083706Abstract: A method for transmitting data between a first device and a second device over a communication link includes transmitting, by the first device, data of a first type using one or more first channels, receiving, by the second device, said data of the first type from the first device using the one or more first channels, generating, by the second device, data of a second type based on said data of the first type, and transmitting, by the second device, said generated data of the second type using one or more second channels. Said data of the first type and said data of the second type are different. The one or more second channels are channels dedicated to transmit said data of the second type.Type: ApplicationFiled: September 16, 2016Publication date: March 22, 2018Inventors: Alan F. Benner, Douglas M. Freimuth, Benjamin G. Lee, Fabrizio Petrini, Laurent Schares, Clint L. Schow, Mehmet Soyuer
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Publication number: 20170353333Abstract: A method and system of optical communication are provided. An optical modulator device includes a first and a second waveguide segment, and is configured to modulate an incident optical signal. A first feed-forward equalization (FFE) circuit including an inner first tap and an inner second tap, is configured to equalize the first waveguide segment. A second FFE circuit including a first inner tap and a second inner tap, is configured to equalize the second waveguide segment. An FFE recombination of the first inner tap and the second inner tap of the first and second FFE circuits, is in the electrical domain, respectively. An FFE recombination of the first and second modulation signals, operative to equalize a combination of the first second waveguide segments, is in the optical domain.Type: ApplicationFiled: December 20, 2016Publication date: December 7, 2017Inventors: Nicolas Dupuis, Tam N. Huynh, Benjamin G. Lee, Jonathan E. Proesel, Renato Rimolo-Donadio, Alexander V. Rylyakov, Clint L. Schow
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Publication number: 20170351122Abstract: A device and method of optical equalization using an optical modulator is provided. An electrical modulation signal is split into a first modulation signal and a second modulation signal. The second modulation signal is delayed relative to the first modulation signal. An amplitude of the second modulation signal is attenuated relative to the first modulation signal. The first modulation signal is applied to a first waveguide segment of the optical modulator. The second modulation signal that is delayed and attenuated relative to the first modulation signal is applied to a second waveguide segment of the optical modulator. Both the applied first and second modulation signals generate a feed-forward equalized optical signal that is recombined in the optical domain.Type: ApplicationFiled: December 20, 2016Publication date: December 7, 2017Inventors: Nicolas Dupuis, Tam N. Huynh, Benjamin G. Lee, Jonathan E. Proesel, Renato Rimolo-Donadio, Alexander V. Rylyakov, Clint L. Schow
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Patent number: 9817193Abstract: An optoelectronic integrated circuit for coupling light to or from an optical waveguide formed in an optical device layer in a near-normal angle to that layer. In an embodiment, the integrated circuit comprises a semiconductor body including a metal-dielectric stack, an optical device layer, a buried oxide layer and a semiconductor substrate arranged in series between first and second opposite sides of the semiconductor body. At least one optical waveguide is formed in the optical device layer for guiding light in a defined plane in that device layer. Diffractive coupling elements are disposed in the optical device layer to couple light from the waveguide toward the second surface of the semiconductor body at a near-normal angle to the defined plane in the optical device layer. In an embodiment, an optical fiber is positioned against the semiconductor body for receiving the light from the coupling elements.Type: GrantFiled: May 26, 2017Date of Patent: November 14, 2017Assignee: International Business Machines CorporationInventors: Fuad Doany, Benjamin G. Lee, Clint L. Schow
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Publication number: 20170261704Abstract: An optoelectronic integrated circuit for coupling light to or from an optical waveguide formed in an optical device layer in a near-normal angle to that layer. In an embodiment, the integrated circuit comprises a semiconductor body including a metal-dielectric stack, an optical device layer, a buried oxide layer and a semiconductor substrate arranged in series between first and second opposite sides of the semiconductor body. At least one optical waveguide is formed in the optical device layer for guiding light in a defined plane in that device layer. Diffractive coupling elements are disposed in the optical device layer to couple light from the waveguide toward the second surface of the semiconductor body at a near-normal angle to the defined plane in the optical device layer. In an embodiment, an optical fiber is positioned against the semiconductor body for receiving the light from the coupling elements.Type: ApplicationFiled: May 26, 2017Publication date: September 14, 2017Inventors: Fuad Doany, Benjamin G. Lee, Clint L. 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: 9671563Abstract: An optoelectronic integrated circuit for coupling light to or from an optical waveguide formed in an optical device layer in a near-normal angle to that layer. In an embodiment, the integrated circuit comprises a semiconductor body including a metal-dielectric stack, an optical device layer, a buried oxide layer and a semiconductor substrate arranged in series between first and second opposite sides of the semiconductor body. At least one optical waveguide is formed in the optical device layer for guiding light in a defined plane in that device layer. Diffractive coupling elements are disposed in the optical device layer to couple light from the waveguide toward the second surface of the semiconductor body at a near-normal angle to the defined plane in the optical device layer. In an embodiment, an optical fiber is positioned against the semiconductor body for receiving the light from the coupling elements.Type: GrantFiled: March 14, 2016Date of Patent: June 6, 2017Assignee: International Business Machines CorporationInventors: Fuad Doany, Benjamin G. Lee, Clint L. Schow