Inventor
O'SULLIVAN MAURICE
CA49 patents
⚠️ This page may combine multiple inventors who share the name “O'SULLIVAN MAURICE”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
CIENA CORP
15 patentsUS8023402B2Sep 20, 2011
Low conversion rate digital dispersion compensation
CIENA CORP24 citations93
US10574352B2Feb 25, 2020
Compensation of transmitter or receiver defects in an optical communications system
CIENA CORP2 citations73
US9853725B2Dec 26, 2017
Optical dispersion compensation in the electrical domain in an optical communications system
CIENA CORP2 citations73
US10164707B2Dec 25, 2018
Optical dispersion compensation in the electrical domain in an optical communications system
CIENA CORP1 citations63
US11821807B2Nov 21, 2023
Estimating nonlinear phase shift in a multi-span fiber-optic link using a coherent receiver
CIENA CORP0 citations62
US10903903B2Jan 26, 2021
Dimensional transformation in optical communication
CIENA CORP0 citations62
US10809150B2Oct 20, 2020
Methods and assemblies for using electrostriction to characterize properties of optical fiber
CIENA CORP1 citations62
US10444114B2Oct 15, 2019
Methods and assemblies for using electrostriction to characterize properties of optical fiber
CIENA CORP1 citations62
US12580662B2Mar 17, 2026
Method and system for mitigating adverse effects of a gas absorption line in coherent optical communication systems
CIENA CORP0 citations57
US12574113B2Mar 10, 2026
Environmental disturbance detection and localization using coherent modem
CIENA CORP0 citations57
US11575556B2Feb 7, 2023
Estimation of communication system impairments using spectrally selective signal perturbations
CIENA CORP0 citations56
US10826605B2Nov 3, 2020
Pseudo frequency division multiplexing
CIENA CORP0 citations52
US10523362B2Dec 31, 2019
Systems and methods for error-free reconstruction of transmitted symbols in a coherent receiver
CIENA CORP0 citations51
US8355631B2Jan 15, 2013
Reducing optical service channel interference in phase modulated wavelength division multiplexed (WDM) communication systems
CIENA CORP1 citations51
US11799560B2Oct 24, 2023
Asymmetric direct detection of optical signals
CIENA CORP0 citations50
NORTEL NETWORKS LTD
10 patentsUS7701842B2Apr 20, 2010
Low conversion rate digital dispersion compensation
NORTEL NETWORKS LTD113 citations98
US7555227B2Jun 30, 2009
Polarization compensation in a coherent optical receiver
NORTEL NETWORKS LTD57 citations98
US7376358B2May 20, 2008
Location specific optical monitoring
NORTEL NETWORKS LTD72 citations97
US7382985B2Jun 3, 2008
Electrical domain mitigation of polarization dependent effects in an optical communications system
NORTEL NETWORKS LTD50 citations92
US7200339B1Apr 3, 2007
Method and apparatus for laser line-width compensation
NORTEL NETWORKS LTD22 citations92
US7023601B2Apr 4, 2006
Optical E-field modulation using a Mach-Zehnder interferometer
NORTEL NETWORKS LTD44 citations90
US7680420B1Mar 16, 2010
Optical E-field modulation using a directly driven laser
NORTEL NETWORKS LTD16 citations82
US6751414B1Jun 15, 2004
Circuit and channel assignment plan for optical transmissions
NORTEL NETWORKS LTD16 citations80
US7274879B1Sep 25, 2007
Compensation of temperature-induced dispersion drift in optical communication links
NORTEL NETWORKS LTD9 citations72
US7672595B1Mar 2, 2010
Optical transmission system architecture supporting migration to electronic compensation of link impairments
NORTEL NETWORKS LTD4 citations62
ZHUGE QUNBI
7 patentsUS10236982B1Mar 19, 2019
Fiber parameter identification
ZHUGE QUNBI19 citations93
US10608746B2Mar 31, 2020
Mitigation of electrical-to-optical conversion impairments induced at transmitter
ZHUGE QUNBI6 citations83
US9768875B2Sep 19, 2017
Optical modulation schemes having reduced nonlinear optical transmission impairments
ZHUGE QUNBI12 citations83
US9319137B2Apr 19, 2016
Methods and systems for reduced complexity nonlinear compensation
ZHUGE QUNBI16 citations83
US10090920B1Oct 2, 2018
Fiber kerr nonlinear noise estimation
ZHUGE QUNBI5 citations72
US10014947B2Jul 3, 2018
Mitigation of electrical-to-optical conversion impairments induced at transmitter
ZHUGE QUNBI2 citations72
US9973277B2May 15, 2018
Reduced complexity nonlinear compensation
ZHUGE QUNBI1 citations51
ROBERTS KIM B
3 patentsUS9143238B2Sep 22, 2015
Optical modulation schemes having reduced nonlinear optical transmission impairments
ROBERTS KIM B32 citations94
US8249467B2Aug 21, 2012
Self test of a dual polarization transmitter
ROBERTS KIM B10 citations83
US10439751B2Oct 8, 2019
Power control in an optical fiber network
ROBERTS KIM B5 citations73
SHINER ANDREW D
3 patentsUS9960843B2May 1, 2018
Nonlinear spatially resolved interferometer (NL-SRI) for characterizing optical properties of deployed telecommunication cables
SHINER ANDREW D7 citations82
US11228383B2Jan 18, 2022
Estimation of external noise in a communication channel
SHINER ANDREW D3 citations72
US10193620B2Jan 29, 2019
Nonlinear spatially resolved interferometer for characterizing optical properties of deployed telecommunication cables
SHINER ANDREW D5 citations71
NORTHERN TELECOM LTD
2 patentsAWADALLA AHMED M
2 patentsUS8139954B2Mar 20, 2012
System and method for reducing memory requirements for electrical domain compensation of intra-channel nonlinearity in an optical communications system
AWADALLA AHMED M4 citations55
US8705982B2Apr 22, 2014
System and method for reducing memory requirements for electrical domain compensation of intra-channel nonlinearity in an optical communications system
AWADALLA AHMED M1 citations44