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).

  • Patent number: 10461866
    Abstract: 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: Grant
    Filed: April 17, 2019
    Date of Patent: October 29, 2019
    Assignee: Ramot at Tel-Aviv University Ltd.
    Inventors: Yossef Ehrlichman, Ofer Amrani, Shlomo Ruschin
  • Publication number: 20190273561
    Abstract: 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: Application
    Filed: April 17, 2019
    Publication date: September 5, 2019
    Applicant: Ramot at Tel-Aviv University Ltd.
    Inventors: Yossef EHRLICHMAN, Ofer AMRANI, Shlomo RUSCHIN
  • Patent number: 10270535
    Abstract: 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: Grant
    Filed: December 28, 2018
    Date of Patent: April 23, 2019
    Assignee: Ramot at Tel-Aviv University Ltd.
    Inventors: Yossef Ehrlichman, Ofer Amrani, Shlomo Ruschin
  • Patent number: 10205527
    Abstract: 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: Grant
    Filed: October 20, 2016
    Date of Patent: February 12, 2019
    Assignee: Ramot at Tel-Aviv University Ltd.
    Inventors: Yossef Ehrlichman, Ofer Amrani, Shlomo Ruschin
  • Publication number: 20190041720
    Abstract: 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: Application
    Filed: February 6, 2017
    Publication date: February 7, 2019
    Inventors: Yossef EHRLICHMAN, Ofer AMRANI, Shlomo RUSCHIN
  • Patent number: 10033465
    Abstract: 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: Grant
    Filed: October 20, 2016
    Date of Patent: July 24, 2018
    Assignee: Ramot at Tel-Aviv University Ltd.
    Inventors: Yossef Ehrlichman, Ofer Amrani, Shlomo Ruschin
  • Publication number: 20170302291
    Abstract: 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: Application
    Filed: October 20, 2016
    Publication date: October 19, 2017
    Applicant: Ramot at Tel-Aviv University Ltd.
    Inventors: Yossef EHRLICHMAN, Ofer AMRANI, Shlomo RUSCHIN
  • Publication number: 20170294968
    Abstract: 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: Application
    Filed: October 20, 2016
    Publication date: October 12, 2017
    Applicant: Ramot at Tel-Aviv University Ltd.
    Inventors: Yossef EHRLICHMAN, Ofer AMRANI, Shlomo RUSCHIN
  • Patent number: 9479191
    Abstract: 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: Grant
    Filed: October 25, 2015
    Date of Patent: October 25, 2016
    Assignee: Ramot at Tel-Aviv University Ltd.
    Inventors: Yossef Ehrlichman, Ofer Amrani, Shlomo Ruschin
  • Publication number: 20160043732
    Abstract: 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: Application
    Filed: October 25, 2015
    Publication date: February 11, 2016
    Applicant: RAMOT AT TEL-AVIV UNIVERSITY LTD.
    Inventors: Yossef EHRLICHMAN, Ofer AMRANI, Shlomo RUSCHIN
  • Patent number: 9203425
    Abstract: 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 convertor, 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: Grant
    Filed: March 19, 2015
    Date of Patent: December 1, 2015
    Assignee: Ramot at Tel-Aviv University Ltd.
    Inventors: Yossef Ehrlichman, Ofer Amrani, Shlomo Ruschin
  • Publication number: 20150194982
    Abstract: A modulator device for converting digital date 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: Application
    Filed: March 19, 2015
    Publication date: July 9, 2015
    Applicant: Ramot at Tel-Aviv University Ltd.
    Inventors: Yossef EHRLICHMAN, Ofer AMRANI, Shlomo RUSCHIN
  • Patent number: 9031417
    Abstract: 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: Grant
    Filed: July 8, 2014
    Date of Patent: May 12, 2015
    Assignee: Ramot at Tel-Aviv University Ltd.
    Inventors: Yossef Ehrlichman, Ofer Amrani, Shlomo Ruschin
  • Publication number: 20140321857
    Abstract: 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: Application
    Filed: July 8, 2014
    Publication date: October 30, 2014
    Inventors: Yossef EHRLICHMAN, Ofer Amrani, Shlomo Ruschin
  • Patent number: 8797198
    Abstract: 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: Grant
    Filed: October 25, 2011
    Date of Patent: August 5, 2014
    Assignee: Ramot at Tel-Aviv University Ltd.
    Inventors: Yossef Ehrlichman, Ofer Amrani, Shlomo Ruschin
  • Publication number: 20120081245
    Abstract: 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: Application
    Filed: October 25, 2011
    Publication date: April 5, 2012
    Applicant: RAMOT AT TEL AVIV UNIVERSITY LTD.
    Inventors: Yossef Ehrlichman, Ofer Amrani, Shlomo Ruschin
  • Patent number: 8044835
    Abstract: 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: Grant
    Filed: December 14, 2009
    Date of Patent: October 25, 2011
    Assignee: Ramot at Tel Aviv University Ltd.
    Inventors: Yossef Ehrlichman, Ofer Amrani, Shlomo Ruschin
  • Publication number: 20100156679
    Abstract: 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: Application
    Filed: December 14, 2009
    Publication date: June 24, 2010
    Applicant: RAMOT AT TEL AVIV UNIVERSITY LTD.
    Inventors: Yossef EHRLICHMAN, Ofer Amrani, Shlomo Ruschin