Patents by Inventor Yossef Ehrlichman
Yossef Ehrlichman 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: 20230403079Abstract: In a system for converting digital data into a modulated optical signal, an electrically controllable device, including a modulator having one or more actuating electrodes, provides an analog-modulated optical signal that is modulated in response to output data bits of a digital-to-digital mapping. A digital-to-digital conversion provides the mapping of input data words to the output data bits. The mapping enables adjustments to correct for non-linearities and other undesirable characteristics, thereby improving signal quality.Type: ApplicationFiled: June 13, 2023Publication date: December 14, 2023Inventors: Yossef EHRLICHMAN, Ofer AMRANI, Shlomo RUSCHIN
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Patent number: 11716148Abstract: In a system for converting digital data into a modulated optical signal, an electrically controllable device, including a modulator having one or more actuating electrodes, provides an analog-modulated optical signal that is modulated in response to output data bits of a digital-to-digital mapping. A digital-to-digital conversion provides the mapping of input data words to the output data bits. The mapping enables adjustments to correct for non-linearities and other undesirable characteristics, thereby improving signal quality.Type: GrantFiled: May 4, 2022Date of Patent: August 1, 2023Assignee: Ramot At Tel Aviv University Ltd.Inventors: Yossef Ehrlichman, Ofer Amrani, Shlomo Ruschin
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Publication number: 20220271842Abstract: In a system for converting digital data into a modulated optical signal, an electrically controllable device, including a modulator having one or more actuating electrodes, provides an analog-modulated optical signal that is modulated in response to output data bits of a digital-to-digital mapping. A digital-to-digital conversion provides the mapping of input data words to the output data bits. The mapping enables adjustments to correct for non-linearities and other undesirable characteristics, thereby improving signal quality.Type: ApplicationFiled: May 4, 2022Publication date: August 25, 2022Inventors: Yossef EHRLICHMAN, Ofer AMRANI, Shlomo RUSCHIN
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Patent number: 11342998Abstract: In a system for converting digital data into a modulated optical signal, an electrically controllable device having M actuating electrodes provides and optical signal that is modulated in response to binary voltages applied to the actuating electrodes. A digital-to-digital converter provides a mapping of input data words to binary actuation vectors for M bits and supplies the binary actuation vectors as M bits of binary actuation voltages to the M actuating electrodes, where M is larger than the number of bits in each input data word. The digital-to-digital converter maps each digital input data word to a binary actuation vector by selecting a binary actuation vector from a subset of binary actuation vectors available to represent each of the input data words.Type: GrantFiled: September 22, 2021Date of Patent: May 24, 2022Assignee: Ramot at Tel-Aviv University Ltd.Inventors: Yossef Ehrlichman, Ofer Amrani, Shlomo Ruschin
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Patent number: 11294123Abstract: A modulator comprises one or more resonators. Each resonator has a light confining closed loop structure, such as a ring structure, and two, three or more electrodes associated with the light-confining structure, and may be a micro-resonator. An optical signal is modulated by a digital signal using the resonator. The procedure comprises obtaining the digital signal, mapping the signal using a mapping function to produce a transformed digital signal, the transformed digital signal being selected to produce, say linear, output from the resonator, inputting the transformed digital signal via electrodes onto the resonator; and modulating the optical signal via coupling from the resonator. Suitable mapping produces 16 QAM and other modulation schemes.Type: GrantFiled: April 7, 2020Date of Patent: April 5, 2022Assignee: Ramot at Tel-Aviv University Ltd.Inventors: Yossef Ehrlichman, Ofer Amrani, Shlomo Ruschin
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Publication number: 20220077936Abstract: In a system for converting digital data into a modulated optical signal, an electrically controllable device having M actuating electrodes provides and optical signal that is modulated in response to binary voltages applied to the actuating electrodes. A digital-to-digital converter provides a mapping of input data words to binary actuation vectors for M bits and supplies the binary actuation vectors as M bits of binary actuation voltages to the M actuating electrodes, where M is larger than the number of bits in each input data word. The digital-to-digital converter maps each digital input data word to a binary actuation vector by selecting a binary actuation vector from a subset of binary actuation vectors available to represent each of the input data words.Type: ApplicationFiled: September 22, 2021Publication date: March 10, 2022Inventors: Yossef EHRLICHMAN, Ofer AMRANI, Shlomo RUSCHIN
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Patent number: 11133872Abstract: In a system for converting digital data into a modulated optical signal, an electrically controllable device having M actuating electrodes provides an optical signal that is modulated in response to binary voltages applied to the actuating electrodes. A digital-to-digital converter provides a mapping of input data words to binary actuation vectors of M bits and supplies the binary actuation vectors as M bits of binary actuation voltages to the M actuating electrodes, where M is larger than the number of bits in each input data word. The digital-to-digital converter maps each digital input data word to a binary actuation vector by selecting a binary actuation vector from a subset of binary actuation vectors available to represent each of the input data words.Type: GrantFiled: August 6, 2019Date of Patent: September 28, 2021Assignee: Ramot at Tel-Aviv University Ltd.Inventors: Yossef Ehrlichman, Ofer Amrani, Shlomo Ruschin
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Publication number: 20200233151Abstract: A modulator comprises one or more resonators. Each resonator has a light confining closed loop structure, such as a ring structure, and two, three or more electrodes associated with the light-confining structure, and may be a micro-resonator. An optical signal is modulated by a digital signal using the resonator. The procedure comprises obtaining the digital signal, mapping the signal using a mapping function to produce a transformed digital signal, the transformed digital signal being selected to produce, say linear, output from the resonator, inputting the transformed digital signal via electrodes onto the resonator; and modulating the optical signal via coupling from the resonator. Suitable mapping produces 16 QAM and other modulation schemes.Type: ApplicationFiled: April 7, 2020Publication date: July 23, 2020Applicant: Ramot at Tel-Aviv University Ltd.Inventors: Yossef EHRLICHMAN, Ofer AMRANI, Shlomo RUSCHIN
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Patent number: 10620375Abstract: A modulator comprises one or more resonators. Each resonator has a light confining closed loop structure, such as a ring structure, and two, three or more electrodes associated with the light-confining structure, and may be a micro-resonator. An optical signal is modulated by a digital signal using the resonator. The procedure comprises obtaining the digital signal, mapping the signal using a mapping function to produce a transformed digital signal, the transformed digital signal being selected to produce, say linear, output from the resonator, inputting the transformed digital signal via electrodes onto the resonator; and modulating the optical signal via coupling from the resonator. Suitable mapping produces 16 QAM and other modulation schemes.Type: GrantFiled: February 6, 2017Date of Patent: April 14, 2020Assignee: Ramot at Tel-Aviv University Ldt.Inventors: Yossef Ehrlichman, Ofer Amrani, Shlomo Ruschin
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Publication number: 20190363798Abstract: A system for converting digital data into a modulated optical signal, comprises an electrically controllable device having M actuating electrodes. The device provides an optical signal that is modulated in response to binary voltages applied to the actuating electrodes. The system also comprises a digital-to-digital converter that provides a mapping of input data words to binary actuation vectors of M bits and supplies the binary actuation vectors as M bits of binary actuation voltages to the M actuating electrodes, where M is larger than the number of bits in each input data word. The digital-to-digital converter is enabled to map each digital input data word to a binary actuation vector by selecting a binary actuation vector from a subset of binary actuation vectors available to represent each of the input data words.Type: ApplicationFiled: August 6, 2019Publication date: November 28, 2019Applicant: Ramot at Tel-Aviv University Ltd.Inventors: Yossef EHRLICHMAN, Ofer AMRANI, Shlomo RUSCHIN
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Patent number: 10461866Abstract: In a modulation system that modulates and transmits an optical signal over at least one optical fiber in response to an input digital data word of N bits, there is an input enabled for receiving the digital data word; an electrically controllable modulator having one or more waveguide branches, where each branch receives an input of an unmodulated optical signal; and a digital to digital converter enabled for converting the N bits to a digital drive vector corresponding to M drive voltage values, where M>N and N>1. The electrically controllable modulator couples the drive voltage values to the unmodulated optical signal(s). The coupling enables pulse modulation of the unmodulated optical signal(s) thereby generating pulse modulated optical signal(s). The electrically controllable modulator outputs the pulse modulated optical signal(s) to one or more outputs that are enabled for transmitting the pulse modulated optical signal(s) over at least one optical fiber.Type: GrantFiled: April 17, 2019Date of Patent: October 29, 2019Assignee: Ramot at Tel-Aviv University Ltd.Inventors: Yossef Ehrlichman, Ofer Amrani, Shlomo Ruschin
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Publication number: 20190273561Abstract: A system for converting digital data into a modulated optical signal, comprises an electrically controllable device having M actuating electrodes. The device provides an optical signal that is modulated in response to binary voltages applied to the actuating electrodes. The system also comprises a digital-to-digital converter that provides a mapping of input data words to binary actuation vectors of M bits and supplies the binary actuation vectors as M bits of binary actuation voltages to the M actuating electrodes, where M is larger than the number of bits in each input data word. The digital-to-digital converter is enabled to map each digital input data word to a binary actuation vector by selecting a binary actuation vector from a subset of binary actuation vectors available to represent each of the input data words.Type: ApplicationFiled: April 17, 2019Publication date: September 5, 2019Applicant: Ramot at Tel-Aviv University Ltd.Inventors: Yossef EHRLICHMAN, Ofer AMRANI, Shlomo RUSCHIN
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Patent number: 10270535Abstract: A system for converting digital data into a modulated optical signal, comprises an electrically controllable device having M actuating electrodes. The device provides an optical signal that is modulated in response to binary voltages applied to the actuating electrodes. The system also comprises a digital-to-digital converter that provides a mapping of input data words to binary actuation vectors of M bits and supplies the binary actuation vectors as M bits of binary actuation voltages to the M actuating electrodes, where M is larger than the number of bits in each input data word. The digital-to-digital converter is enabled to map each digital input data word to a binary actuation vector by selecting a binary actuation vector from a subset of binary actuation vectors available to represent each of the input data words.Type: GrantFiled: December 28, 2018Date of Patent: April 23, 2019Assignee: Ramot at Tel-Aviv University Ltd.Inventors: Yossef Ehrlichman, Ofer Amrani, Shlomo Ruschin
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Patent number: 10205527Abstract: A system for converting digital data into a modulated optical signal, comprises an electrically controllable device having M actuating electrodes. The device provides an optical signal that is modulated in response to binary voltages applied to the actuating electrodes. The system also comprises a digital-to-digital converter that provides a mapping of input data words to binary actuation vectors of M bits and supplies the binary actuation vectors as M bits of binary actuation voltages to the M actuating electrodes, where M is larger than the number of bits in each input data word. The digital-to-digital converter is enabled to map each digital input data word to a binary actuation vector by selecting a binary actuation vector from a subset of binary actuation vectors available to represent each of the input data words.Type: GrantFiled: October 20, 2016Date of Patent: February 12, 2019Assignee: Ramot at Tel-Aviv University Ltd.Inventors: Yossef Ehrlichman, Ofer Amrani, Shlomo Ruschin
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Publication number: 20190041720Abstract: A modulator comprises one or more resonators. Each resonator has a light confining closed loop structure, such as a ring structure, and two, three or more electrodes associated with the light-confining structure, and may be a micro-resonator. An optical signal is modulated by a digital signal using the resonator. The procedure comprises obtaining the digital signal, mapping the signal using a mapping function to produce a transformed digital signal, the transformed digital signal being selected to produce, say linear, output from the resonator, inputting the transformed digital signal via electrodes onto the resonator; and modulating the optical signal via coupling from the resonator. Suitable mapping produces 16 QAM and other modulation schemes.Type: ApplicationFiled: February 6, 2017Publication date: February 7, 2019Inventors: Yossef EHRLICHMAN, Ofer AMRANI, Shlomo RUSCHIN
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Patent number: 10033465Abstract: A system for converting digital data into a modulated optical signal, comprises an electrically controllable device having M actuating electrodes. The device provides an optical signal that is modulated in response to binary voltages applied to the actuating electrodes. The system also comprises a digital-to-digital converter that provides a mapping of input data words to binary actuation vectors of M bits and supplies the binary actuation vectors as M bits of binary actuation voltages to the M actuating electrodes, where M is larger than the number of bits in each input data word. The digital-to-digital converter is enabled to map each digital input data word to a binary actuation vector by selecting a binary actuation vector from a subset of binary actuation vectors available to represent each of the input data words.Type: GrantFiled: October 20, 2016Date of Patent: July 24, 2018Assignee: Ramot at Tel-Aviv University Ltd.Inventors: Yossef Ehrlichman, Ofer Amrani, Shlomo Ruschin
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Publication number: 20170302291Abstract: A system for converting digital data into a modulated optical signal, comprises an electrically controllable device having M actuating electrodes. The device provides an optical signal that is modulated in response to binary voltages applied to the actuating electrodes. The system also comprises a digital-to-digital converter that provides a mapping of input data words to binary actuation vectors of M bits and supplies the binary actuation vectors as M bits of binary actuation voltages to the M actuating electrodes, where M is larger than the number of bits in each input data word. The digital-to-digital converter is enabled to map each digital input data word to a binary actuation vector by selecting a binary actuation vector from a subset of binary actuation vectors available to represent each of the input data words.Type: ApplicationFiled: October 20, 2016Publication date: October 19, 2017Applicant: Ramot at Tel-Aviv University Ltd.Inventors: Yossef EHRLICHMAN, Ofer AMRANI, Shlomo RUSCHIN
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Publication number: 20170294968Abstract: A system for converting digital data into a modulated optical signal, comprises an electrically controllable device having M actuating electrodes. The device provides an optical signal that is modulated in response to binary voltages applied to the actuating electrodes. The system also comprises a digital-to-digital converter that provides a mapping of input data words to binary actuation vectors of M bits and supplies the binary actuation vectors as M bits of binary actuation voltages to the M actuating electrodes, where M is larger than the number of bits in each input data word. The digital-to-digital converter is enabled to map each digital input data word to a binary actuation vector by selecting a binary actuation vector from a subset of binary actuation vectors available to represent each of the input data words.Type: ApplicationFiled: October 20, 2016Publication date: October 12, 2017Applicant: Ramot at Tel-Aviv University Ltd.Inventors: Yossef EHRLICHMAN, Ofer AMRANI, Shlomo RUSCHIN
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Patent number: 9479191Abstract: A system for converting digital data into a modulated optical signal, comprises an electrically controllable device having M actuating electrodes. The device provides an optical signal that is modulated in response to binary voltages applied to the actuating electrodes. The system also comprises a digital-to-digital converter that provides a mapping of input data words to binary actuation vectors of M bits and supplies the binary actuation vectors as M bits of binary actuation voltages to the M actuating electrodes, where M is larger than the number of bits in each input data word. The digital-to-digital converter is enabled to map each digital input data word to a binary actuation vector by selecting a binary actuation vector from a subset of binary actuation vectors available to represent each of the input data words.Type: GrantFiled: October 25, 2015Date of Patent: October 25, 2016Assignee: Ramot at Tel-Aviv University Ltd.Inventors: Yossef Ehrlichman, Ofer Amrani, Shlomo Ruschin
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Publication number: 20160043732Abstract: A modulator device for converting digital data into modulation of an optical signal includes an electronic input for receiving an input data word of N bits and an electrically controllable modulator for modulating the intensity of an optical signal, the modulator including M actuating electrodes where M?N. An electrode actuating device, most preferably a digital-to-digital converter, operates actuating electrodes so that at least one electrode is actuated as a function of values of more than one bit of the input data word. According to an alternative, or supplementary, aspect of the invention, the set of electrodes includes at least one electrode having an effective area which is not interrelated to others of the set by factors of two. In one preferred implementation, a Mach-Zehnder modulator also provides phase modulation to give QAM functionality. Another implementation employs a semiconductor laser.Type: ApplicationFiled: October 25, 2015Publication date: February 11, 2016Applicant: RAMOT AT TEL-AVIV UNIVERSITY LTD.Inventors: Yossef EHRLICHMAN, Ofer AMRANI, Shlomo RUSCHIN