Patents by Inventor Maurice O'Connor

Maurice O'Connor 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).

  • Publication number: 20250130095
    Abstract: Aspects of the subject disclosure may include, for example, deriving substantially orthogonal optical fields from an output of an optical source, implementing a delay on one of the substantially orthogonal optical fields, resulting in time delayed optical fields, performing coherent detection of the time-delayed optical fields, resolving electrical field signals based on the coherent detection, and causing the electrical field signals to be processed so as to estimate a property of the optical source, wherein estimation of the property facilitates disturbance detection and localization. Other embodiments are disclosed.
    Type: Application
    Filed: October 20, 2023
    Publication date: April 24, 2025
    Applicant: CIENA CORPORATION
    Inventors: Mohammad Ebrahim Mousa Pasandi, Maurice O'Sullivan, Michael Reimer, Yixiang Hu, David V. Plant, Ramon Gutierrez-Castrejon
  • Publication number: 20250070869
    Abstract: Aspects of the subject disclosure may include, for example, obtaining an estimate of a phase of a reference associated with a signal received over an optical channel, obtaining an estimate of a frequency of a carrier associated with the signal, and based on the estimate of the phase of the reference and the estimate of the frequency of the carrier, estimating a location dependent property associated with a disturbance to the optical channel to determine a location estimate for the disturbance. Other embodiments are disclosed.
    Type: Application
    Filed: August 24, 2023
    Publication date: February 27, 2025
    Applicant: CIENA CORPORATION
    Inventors: Fanqi Kong, Michael Reimer, Maurice O'Sullivan, Michael Y. Frankel
  • Publication number: 20250007617
    Abstract: Aspects of the subject disclosure may include, for example, a device including a detector configured to identify a narrow-band absorption occurring within a signal spectrum of an optical signal propagating through a gaseous medium, wherein the optical signal is configured to communicate digital information via an optical communication link including a transmitter, a receiver and an optical transport medium therebetween. The device further includes a mitigation controller configured to control a digital circuit to mitigate at least a portion of a vulnerability of the optical communication link, the vulnerability associated with the narrow-band absorption. Other embodiments are disclosed.
    Type: Application
    Filed: June 27, 2023
    Publication date: January 2, 2025
    Applicant: CIENA CORPORATION
    Inventors: Maurice O'Sullivan, Douglas Charlton, Mohammad Ebrahim Mousa Pasandi, Charles Laperle, Kim Byron Roberts, Michael Reimer
  • Publication number: 20240000092
    Abstract: The present invention relates to a method of producing a stacked, sliced food analogue. The invention finds utility in the field of food production, in particular in the field of production of plant-based food analogues, and specifically plant-based cheese analogues.
    Type: Application
    Filed: November 23, 2021
    Publication date: January 4, 2024
    Applicant: Kerry Group Services International Limited
    Inventors: Joan TOBIN, Robert HAMMERSLEY, Sarah KELLY, Liam DOYLE, Clara O'CONNOR, Neil BOURKE, Maurice O'SULLIVAN, Antonella PISCIOTTA
  • Patent number: 11821807
    Abstract: A transmitter generates a first electrical signal comprising a first low-frequency signal, an empty period, and a pump pulse having a first frequency; and a second electrical signal comprising a second low-frequency signal and at least two probe pulses, each probe pulse having a second frequency that differs from the first frequency. The transmitter modulates first and second optical subcarriers having different polarizations using the first and second electrical signals, respectively. The transmitter generates an optical signal from the first and second optical subcarriers, wherein the first and second low-frequency signals overlap in time, wherein the empty period overlaps in time with one of the probe pulses, and wherein the pump pulse overlaps in time with another one of the probe pulses. The optical signal is detected at a receiver over an optical link, and the receiver uses the optical signal to estimate nonlinear phase shift in the optical link.
    Type: Grant
    Filed: July 22, 2021
    Date of Patent: November 21, 2023
    Assignee: Ciena Corporation
    Inventors: Rongqing Hui, Maurice O'Sullivan
  • Patent number: 11799560
    Abstract: An asymmetric coherent receiver includes an optical front end configured to split a received optical signal into two paths, wherein the split received optical signal experiences a different optical transfer function in one of the two paths; two photodetectors each configured to detect power one of the split received optical signals in each of the two paths to obtain corresponding electrical signals; and circuitry configured to perform electrical domain extraction of information of each of the corresponding electrical signals from the two paths, wherein the different optical transfer function provides additional information utilized in optical field reconstruction via direct detection.
    Type: Grant
    Filed: January 19, 2022
    Date of Patent: October 24, 2023
    Assignee: Ciena Corporation
    Inventors: Xueyang Li, Maurice O'Sullivan, Zhenping Xing, David V. Plant, Mohammad E. Mousa Pasandi
  • Patent number: 11575556
    Abstract: A communication system is configured to generate a perturbed signal by perturbing an amplitude of a spectrum of an original signal in one or more spectral regions, and to propagate the perturbed signal through components of the communication system. The communication system is further configured to obtain a measurement of the perturbed signal in a first spectral region of the one or more spectral regions following the propagation of the perturbed signal, and to calculate an estimate of an impairment associated with the communication system based on the measurement.
    Type: Grant
    Filed: August 27, 2021
    Date of Patent: February 7, 2023
    Assignee: Ciena Corporation
    Inventors: Francisco Javier Vaquero-Caballero, Michael Andrew Reimer, Seb Savory, Maurice O'Sullivan, Mohammad Ebrahim Mousa Pasandi, David Ives, Michael Hubbard, Andrew D. Shiner
  • Patent number: 11532934
    Abstract: Digital isolator devices, and many other devices, have a maximum device junction temperature, which, if exceeded, may cause device failure and the integrity of the isolation is no longer guaranteed. The use of an electronic fuse, eFuse, arranged in series with the digital isolator, provides a protection scheme for the digital isolator in which current is limited by the eFuse when it is determined that the supply current of the digital isolator exceeds a predetermined threshold that would the cause junction temperature to increase above an absolute maximum rating. As such, the integrity of the digital isolator is preserved in the event of a system fault.
    Type: Grant
    Filed: November 29, 2018
    Date of Patent: December 20, 2022
    Assignee: Analog Devices International Unlimited Company
    Inventors: Paul O'Sullivan, Maurice O'Brien, Donal G. O'Sullivan, Stefan Hacker, Conal Watterson
  • Publication number: 20220236140
    Abstract: A transmitter generates a first electrical signal comprising a first low-frequency signal, an empty period, and a pump pulse having a first frequency; and a second electrical signal comprising a second low-frequency signal and at least two probe pulses, each probe pulse having a second frequency that differs from the first frequency. The transmitter modulates first and second optical subcarriers having different polarizations using the first and second electrical signals, respectively. The transmitter generates an optical signal from the first and second optical subcarriers, wherein the first and second low-frequency signals overlap in time, wherein the empty period overlaps in time with one of the probe pulses, and wherein the pump pulse overlaps in time with another one of the probe pulses. The optical signal is detected at a receiver over an optical link, and the receiver uses the optical signal to estimate nonlinear phase shift in the optical link.
    Type: Application
    Filed: July 22, 2021
    Publication date: July 28, 2022
    Inventors: Rongqing HUI, Maurice O'SULLIVAN
  • Publication number: 20220149954
    Abstract: An asymmetric coherent receiver includes an optical front end configured to split a received optical signal into two paths, wherein the split received optical signal experiences a different optical transfer function in one of the two paths; two photodetectors each configured to detect power one of the split received optical signals in each of the two paths to obtain corresponding electrical signals; and circuitry configured to perform electrical domain extraction of information of each of the corresponding electrical signals from the two paths, wherein the different optical transfer function provides additional information utilized in optical field reconstruction via direct detection.
    Type: Application
    Filed: January 19, 2022
    Publication date: May 12, 2022
    Inventors: Xueyang Li, Maurice O'Sullivan, Zhenping Xing, David V. Plant, Mohammad E. Mousa Pasandi
  • Publication number: 20220070044
    Abstract: A communication system is configured to generate a perturbed signal by perturbing an amplitude of a spectrum of an original signal in one or more spectral regions, and to propagate the perturbed signal through components of the communication system. The communication system is further configured to obtain a measurement of the perturbed signal in a first spectral region of the one or more spectral regions following the propagation of the perturbed signal, and to calculate an estimate of an impairment associated with the communication system based on the measurement.
    Type: Application
    Filed: August 27, 2021
    Publication date: March 3, 2022
    Inventors: Francisco Javier VAQUERO-CABALLERO, Michael Andrew REIMER, Seb SAVORY, Maurice O'SULLIVAN, Mohammad Ebrahim MOUSA PASANDI, David IVES, Michael HUBBARD, Andrew D. SHINER
  • Patent number: 11228383
    Abstract: A system configured to perform a method for estimating external noise in a communication channel between a transmitter and a receiver is described. The method comprises obtaining a measurement of effective noise on decoded symbols at the receiver, the decoded symbols comprising noisy versions of symbols conveyed by a communication signal transmitted over the communication channel. The method further comprises storing a representation of a relationship between the effective noise, external noise in the communication channel, and one or more variable parameters. The method further comprises storing applicable values of the variable parameters, wherein each applicable value is associated with current properties of the transmitter or current properties of the receiver or both. The method further comprises calculating an estimate of the external noise in the communication channel using the effective noise, the applicable values of the variable parameters, and the representation of the relationship.
    Type: Grant
    Filed: December 19, 2019
    Date of Patent: January 18, 2022
    Assignee: CIENA CORPORATION
    Inventors: Andrew D. Shiner, David Boertjes, Michael Andrew Reimer, Maurice O'Sullivan
  • Publication number: 20210194607
    Abstract: A system configured to perform a method for estimating external noise in a communication channel between a transmitter and a receiver is described. The method comprises obtaining a measurement of effective noise on decoded symbols at the receiver, the decoded symbols comprising noisy versions of symbols conveyed by a communication signal transmitted over the communication channel. The method further comprises storing a representation of a relationship between the effective noise, external noise in the communication channel, and one or more variable parameters. The method further comprises storing applicable values of the variable parameters, wherein each applicable value is associated with current properties of the transmitter or current properties of the receiver or both. The method further comprises calculating an estimate of the external noise in the communication channel using the effective noise, the applicable values of the variable parameters, and the representation of the relationship.
    Type: Application
    Filed: December 19, 2019
    Publication date: June 24, 2021
    Applicant: CIENA CORPORATION
    Inventors: Andrew D. SHINER, David BOERTJES, Michael Andrew REIMER, Maurice O'SULLIVAN
  • Patent number: 11037216
    Abstract: A multi-merchant portal that enables a user to access e-commerce stores is provided. Each e-commerce store has respective merchant categories browsable by the user at a customer device through the portal, each merchant category comprising products available for purchase from a respective merchant. In response to receiving a request from the customer device to switch access of the user browsing a selected merchant category of the first merchant in a first e-commerce store, to a second e-commerce store, the portal determines a system category corresponding to the selected merchant category using mapping data mapping merchant categories to system categories and then determines a destination merchant category of the second merchant in the second e-commerce store corresponding to the determined system category using mapping data mapping the system categories to the merchant categories. The portal switches user's access to the destination merchant category in the second e-commerce store.
    Type: Grant
    Filed: December 8, 2017
    Date of Patent: June 15, 2021
    Assignee: Mastercard International Incorporated
    Inventors: Chris O'Mahony, Stephen Elder, Bryan O'Sullivan, Derek Humphreys, Alex Staveley, Eammon Doyle, Stephen Toner, Andrea Rizzini, Maurice O'Connor, Oran Cummins
  • Patent number: 10903903
    Abstract: A transmitter (102,200) applies a dimensional transformation to preliminary digital drive signals representing symbols, thereby generating transformed digital drive signals (704) designed to represent each symbol using a plurality of first dimensions of an optical carrier (242), the first dimensions distributed over two or more timeslots. The preliminary digital drive signals are designed to represent each symbol using a plurality of second dimensions of the carrier, which differ from the first dimensions. Using the transformed signals, the transmitter generates (706) an optical signal (260). A receiver (102,300) receives (802) an optical signal (360) and determines received digital signals (804) corresponding to the first dimensions. The receiver applies an inverse dimensional transformation to the received digital signals to generate preliminary digital drive signal estimates (806) corresponding to the second dimensions, thereby permitting estimation of the symbols (808).
    Type: Grant
    Filed: May 21, 2019
    Date of Patent: January 26, 2021
    Assignee: CIENA CORPORATION
    Inventors: Amir Keyvan Khandani, Shahab Oveis Gharan, Michael Andrew Reimer, Maurice O'Sullivan, Kim B. Roberts
  • Publication number: 20200378864
    Abstract: A monitorable hollow core (HC) optical fiber comprises one or more hollow core anti-resonant fiber (HC-ARF) segments and one or more monitoring segments alternatingly connected with the HC-ARF segments, and where each monitoring segment comprises one or more non-HC-ARF constituents. A method for monitoring a monitorable HC optical fiber comprises transmitting one or more first optical signals on the monitorable HC optical fiber, detecting one or more second optical signals on the monitorable HC optical fiber, and monitoring one or more optical properties of the monitorable HC optical fiber using the first optical signals and the second optical signals, where the monitoring is enabled as a result of interactions between the first optical signals and the non-HC-ARF constituents of the monitoring segments.
    Type: Application
    Filed: June 3, 2019
    Publication date: December 3, 2020
    Applicant: CIENA CORPORATION
    Inventor: Maurice O'SULLIVAN
  • Patent number: 10845268
    Abstract: A monitorable hollow core (HC) optical fiber comprises one or more hollow core anti-resonant fiber (HC-ARF) segments and one or more monitoring segments alternatingly connected with the HC-ARF segments, and where each monitoring segment comprises one or more non-HC-ARF constituents. A method for monitoring a monitorable HC optical fiber comprises transmitting one or more first optical signals on the monitorable HC optical fiber, detecting one or more second optical signals on the monitorable HC optical fiber, and monitoring one or more optical properties of the monitorable HC optical fiber using the first optical signals and the second optical signals, where the monitoring is enabled as a result of interactions between the first optical signals and the non-HC-ARF constituents of the monitoring segments.
    Type: Grant
    Filed: June 3, 2019
    Date of Patent: November 24, 2020
    Assignee: CIENA CORPORATION
    Inventor: Maurice O'Sullivan
  • Patent number: 10826605
    Abstract: An optical transmitter (102,200) is operable to generate an optical signal (260) by modulating a number N of frequency divisional multiplexing (FDM) subcarriers using transformed digital signals which are determined by applying a pseudo FDM (pFDM) transformation to preliminary digital signals representative of multi-bit symbols. Rather than experiencing the effects of the number N of FDM channels, the optical signal experiences the effects of a different number M of pFDM channels, where M?N. In some examples, the number M of pFDM channels is less than the number N of FDM channels, and frequency-dependent degradations may be averaged across different symbol streams. In other examples, the number M of pFDM channels is greater than the number N of FDM channels, and different symbol streams may experience different frequency-dependent degradations. An optical receiver (102,300) is operable to apply an inverse pFDM transformation to recover estimates of the multi-bit symbols.
    Type: Grant
    Filed: September 2, 2019
    Date of Patent: November 3, 2020
    Assignee: Ciena Corporation
    Inventors: Shahab Oveis Gharan, Michael Andrew Reimer, Andrew D. Shiner, Hamid Ebrahimzad, Maurice O'Sullivan, Kim B. Roberts
  • Patent number: 10809150
    Abstract: Systems and method include a detector communicatively coupled to a fiber span; and processing circuitry connected to the detector and configured to digitally sample and process an output of the detector, detect phase changes in the output, and identify an electrostrictive response of the fiber span based on the detected phase changes and based on a dependence of the detected phase changes with frequency. A property of the fiber span can be determined on the electrostrictive response. The property of the optical fiber can include one or more of optical fiber material type, optical fiber material property, optical fiber area, optical fiber geometry, optical fiber condition, optical fiber stress and strain, optical fiber temperature. and optical fiber radiation exposure.
    Type: Grant
    Filed: August 27, 2019
    Date of Patent: October 20, 2020
    Assignee: Ciena Corporation
    Inventors: Andrew D. Shiner, Michael Andrew Reimer, Maurice O'Sullivan
  • Publication number: 20200313764
    Abstract: An optical transmitter (102,200) is operable to generate an optical signal (260) by modulating a number N of frequency divisional multiplexing (FDM) subcarriers using transformed digital signals which are determined by applying a pseudo FDM (pFDM) transformation to preliminary digital signals representative of multi-bit symbols. Rather than experiencing the effects of the number N of FDM channels, the optical signal experiences the effects of a different number M of pFDM channels, where M?N. In some examples, the number M of pFDM channels is less than the number N of FDM channels, and frequency-dependent degradations may be averaged across different symbol streams. In other examples, the number M of pFDM channels is greater than the number N of FDM channels, and different symbol streams may experience different frequency-dependent degradations. An optical receiver (102,300) is operable to apply an inverse pFDM transformation to recover estimates of the multi-bit symbols.
    Type: Application
    Filed: September 2, 2019
    Publication date: October 1, 2020
    Inventors: Shahab Oveis Gharan, Michael Andrew Reimer, Andrew D. Shiner, Hamid Ebrahimzad, Maurice O'Sullivan, Kim B. Roberts