Patents by Inventor Dominique COUE
Dominique COUE 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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Publication number: 20230178962Abstract: Systems and methods for controlling laser modulation in burst communications. In a start-up phase, a drive circuitry sequentially applies first and second drive currents to a laser diode such that it produces a first and second optical output, respectively. A compensating current source coupled to the laser diode provides a current related to the first and second drive currents to maintain a combined current flowing through an impedance connected to the laser diode at a substantially constant level during the start-up phase. An optical sensor measures the first and second optical outputs, and a controller uses values of the first and second drive currents, the outputs from the optical sensor, and at least one supplied input value to provide control values for the drive circuitry for controlling operating current of the laser diode during a subsequent operating phase, wherein information is transmitted in at least one burst.Type: ApplicationFiled: December 2, 2022Publication date: June 8, 2023Inventors: William Redman-White, Dominique Coue, Colin Whitfield
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Patent number: 10749605Abstract: A system for transmitting a sequence of at least two data bursts in a fibre optical communications system includes: selection circuitry configured to select one of a data input value, a logical high value or a logical low value such that the selection circuitry selects the data input value during a data transmission period during a defined burst period and selects one of the logical high value and the logical low value during an extension time period during the defined burst period and immediately following the data transmission period, such that for the sequence of at least two bursts, at least one burst has a logical low value extension period and at least one burst has a logical high value extension period; drive circuitry configured to apply a current to a laser diode, the current corresponding to the value selected by the selection circuitry during the defined burst period or a zero value otherwise, the current being such that the laser diode is configured to provide an optical output; an optical sensorType: GrantFiled: November 5, 2018Date of Patent: August 18, 2020Assignee: HiLight Semiconductor LimitedInventors: William Redman-White, Dominique Coue, Colin Whitfield
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Patent number: 10535978Abstract: A system for controlling an optical intensity and modulation of an optical data transmitter which includes current driver circuitry configured to provide a drive current to a laser diode wherein said current comprises a fixed component and a modulated component, said modulated component having a magnitude related to an input data stream. The monitor circuitry contains a photodiode and a first transimpedance amplifier coupled to said photodiode, said monitor circuitry configured to provide an output signal related to an optical intensity of said laser diode. The system further includes replica monitor circuitry containing a replica capacitor with a replica capacitance and a second transimpedance amplifier configured to be substantially identical in construction to said first transimpedance amplifier, said second transimpedance amplifier coupled to said replica capacitor.Type: GrantFiled: January 30, 2018Date of Patent: January 14, 2020Assignee: HILIGHT SEMICONDUCTOR LIMITEDInventors: William Redman-White, Dominique Coue, Colin Whitfield, Christian Rookes, Derek Hutchins, George Brocklehurst
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Patent number: 10447007Abstract: A system comprising drive circuitry configured to apply in a start-up phase a first drive current and then a second different drive current to a laser diode, the first drive current and second drive current being such that the laser diode is configured to provide a first optical output and a second optical output respectively. The system further comprising an optical sensor configured to provide a first sensor output corresponding to the first optical output of the laser diode and a second sensor output corresponding to the second optical output. The system further comprises a controller configured to use a value of the first drive current, a value of the second drive current, the first sensor output, the second sensor output and at least one supplied input value to provide control values for the drive circuitry to control an operating current of the laser diode, wherein the system is arranged to be used in a communication system wherein information is transmitted in at least one burst.Type: GrantFiled: June 17, 2016Date of Patent: October 15, 2019Assignee: HILIGHT SEMICONDUCTOR LIMITEDInventors: William Redman-White, Dominique Coue, Colin Whitfield
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Patent number: 10333625Abstract: A system for controlling an optical data transmitter includes control circuitry comprising a voltage controlled current source configured to generate a reference current configured to generate at least two output currents whose magnitudes are in a fixed ratio wherein at least one of said output currents is used by said control circuitry to control current driver circuitry, a first plurality of serially coupled resistors, a first plurality of switches, a second plurality of serially coupled resistors, a second plurality of switches, and a look-up-table configured to control the first plurality of switches and the second plurality of switches based on an input to control a ratio.Type: GrantFiled: March 23, 2018Date of Patent: June 25, 2019Assignee: HILIGHT SEMICONDUCTOR LIMITEDInventors: Dominique Coue, William Redman-White
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Publication number: 20190089464Abstract: A system for transmitting a sequence of at least two data bursts in a fibre optical communications system includes: selection circuitry configured to select one of a data input value, a logical high value or a logical low value such that the selection circuitry selects the data input value during a data transmission period during a defined burst period and selects one of the logical high value and the logical low value during an extension time period during the defined burst period and immediately following the data transmission period, such that for the sequence of at least two bursts, at least one burst has a logical low value extension period and at least one burst has a logical high value extension period; drive circuitry configured to apply a current to a laser diode, the current corresponding to the value selected by the selection circuitry during the defined burst period or a zero value otherwise, the current being such that the laser diode is configured to provide an optical output; an optical sensorType: ApplicationFiled: November 5, 2018Publication date: March 21, 2019Applicant: HiLight Semiconductor LimitedInventors: William REDMAN-WHITE, Dominique COUE, Colin WHITFIELD
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Patent number: 10205532Abstract: A laser power controller employs: selection circuitry configured to select one of a data input value, a logical high value or a logical low value such that the selection circuitry selects the data input value during a data transmission period during a defined burst period and selects one of the logical high value and the logical low value during an extension time period during the defined burst period and immediately following the data transmission period; drive circuitry configured to apply, to a laser diode, a current corresponding to the value selected by the selection circuitry during the defined burst period or a zero value otherwise, the current being such that the laser diode is configured to provide an optical output; an optical sensor module configured to provide a sensor module output corresponding to the optical output of the laser diode, and configured to provide an electrical output proportional to the laser diode's optical output corresponding to the logical high value or the logical low value;Type: GrantFiled: July 7, 2017Date of Patent: February 12, 2019Assignee: HILIGHT SEMICONDUCTOR LIMITEDInventors: William Redman-White, Dominique Coue, Colin Whitfield
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Publication number: 20180294886Abstract: A system for controlling an optical data transmitter includes control circuitry comprising a voltage controlled current source configured to generate a reference current configured to generate at least two output currents whose magnitudes are in a fixed ratio wherein at least one of said output currents is used by said control circuitry to control current driver circuitry, a first plurality of serially coupled resistors, a first plurality of switches, a second plurality of serially coupled resistors, a second plurality of switches, and a look-up-table configured to control the first plurality of switches and the second plurality of switches based on an input to control a ratio.Type: ApplicationFiled: March 23, 2018Publication date: October 11, 2018Applicant: Hilight Semiconductor LimitedInventors: Dominique COUE, William REDMAN-WHITE
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Publication number: 20180219354Abstract: A system for controlling an optical intensity and modulation of an optical data transmitter which includes current driver circuitry configured to provide a drive current to a laser diode wherein said current comprises a fixed component and a modulated component, said modulated component having a magnitude related to an input data stream. The monitor circuitry contains a photodiode and a first transimpedance amplifier coupled to said photodiode, said monitor circuitry configured to provide an output signal related to an optical intensity of said laser diode. The system further includes replica monitor circuitry containing a replica capacitor with a replica capacitance and a second transimpedance amplifier configured to be substantially identical in construction to said first transimpedance amplifier, said second transimpedance amplifier coupled to said replica capacitor.Type: ApplicationFiled: January 30, 2018Publication date: August 2, 2018Applicant: Hilight Semiconductor LimitedInventors: William REDMAN-WHITE, Dominique COUE, Colin WHITFIELD, Christian ROOKES, Derek HUTCHINS, George BROCKLEHURST
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Publication number: 20180019823Abstract: A laser power controller employs: selection circuitry configured to select one of a data input value, a logical high value or a logical low value such that the selection circuitry selects the data input value during a data transmission period during a defined burst period and selects one of the logical high value and the logical low value during an extension time period during the defined burst period and immediately following the data transmission period; drive circuitry configured to apply, to a laser diode, a current corresponding to the value selected by the selection circuitry during the defined burst period or a zero value otherwise, the current being such that the laser diode is configured to provide an optical output; an optical sensor module configured to provide a sensor module output corresponding to the optical output of the laser diode, and configured to provide an electrical output proportional to the laser diode's optical output corresponding to the logical high value or the logical low value;Type: ApplicationFiled: July 7, 2017Publication date: January 18, 2018Applicant: Hilight Semiconductor LimitedInventors: William REDMAN-WHITE, Dominique COUE, Colin WHITFIELD
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Publication number: 20160372887Abstract: A system having: drive circuitry configured to apply in a start-up phase a first drive current and then a second different drive current to a laser diode, said first drive current and second drive current being such that said laser diode is configured to provide a first optical output and a second optical output respectively; an optical sensor configured to provide a first sensor output corresponding to said first optical output of said laser diode and a second sensor output corresponding to said second optical output; and a controller configured to use a value of said first drive current, a value of said second drive current, said first sensor output, said second sensor output and at least one supplied input value to provide control values for said drive circuitry to control an operating current of said laser diode, wherein said system is arranged to be used in a communication system wherein information is transmitted in at least one burst.Type: ApplicationFiled: June 17, 2016Publication date: December 22, 2016Applicant: Hilight Semiconductor LImitedInventors: William REDMAN-WHITE, Dominique COUE, Colin WHITFIELD