Inventor · disambiguated record
Balakrishnan Sridhar
Also filed as: SRIDHAR BALAKRISHNAN
36 granted patents·2 pending applications·1,052 citations·filing 1996–2024
98Inventor score
Top patents by PatentIndex Score
38 records- 0198US6049413AOptical amplifier having first and second stages and an attenuator controlled based on the gains of the first and second stagesCIENA CORP·Filed 1998·Granted Apr 11, 2000·210 cites·12 claims
- 0297US10263386B1Four-wave mixing reduction due to raman pumps in optical communication systemsCIENA CORP·Filed 2018·Granted Apr 16, 2019·15 cites·20 claims
- 0397US5778118AOptical add-drop multiplexers for WDM optical communication systemsCIENA CORP·Filed 1996·Granted Jul 7, 1998·190 cites·13 claims
- 0496US10237633B2Systems and methods for modular deployment and upgrade of multiple optical spectrum bands in optical transmission systemsCIENA CORP·Filed 2017·Granted Mar 19, 2019·17 cites·20 claims
- 0595US7826748B2Systems and methods for adaptive gain control to compensate OSNR penalty caused by side-lobe of MEMS-based reconfigurable optical add-drop multiplexersCIENA CORP·Filed 2007·Granted Nov 2, 2010·26 cites·15 claims
- 0694US9793986B2Raman amplifier system and method with integrated optical time domain reflectometerCIENA CORP·Filed 2015·Granted Oct 17, 2017·9 cites·18 claims
- 0794US6765659B1Optical supervisory channel apparatus and method for measuring optical propertiesCIENA CORP·Filed 2002·Granted Jul 20, 2004·69 cites·21 claims
- 0892US10374704B2Raman amplifier system and method with integrated optical time domain reflectometerCIENA CORP·Filed 2017·Granted Aug 6, 2019·4 cites·17 claims
- 0992US7634194B2Multi-channel protection switching systems and methods for increased reliability and reduced costCIENA CORP·Filed 2006·Granted Dec 15, 2009·18 cites·22 claims
- 1090US5963361AOptical amplifier having a variable attenuator controlled based on detected ASECIENA CORP·Filed 1998·Granted Oct 5, 1999·92 cites·14 claims
- 1188US8873135B2Extended dynamic range optical amplifierSRIDHAR BALAKRISHNAN·Filed 2012·Granted Oct 28, 2014·9 cites·16 claims
- 1287US7512343B2Bidirectional communication systemCIENA CORP·Filed 2005·Granted Mar 31, 2009·14 cites·28 claims
- 1387US7369300B2Optical amplifier pre-emphasis and equalization method and optical communications system incorporating sameCIENA CORP·Filed 2006·Granted May 6, 2008·10 cites·12 claims
- 1486US9148710B2Raman amplifier system and method with integrated optical time domain reflectometerARCHAMBAULT JEAN-LUC·Filed 2012·Granted Sep 29, 2015·5 cites·20 claims
- 1586US6178038B1Optical amplifier having an improved noise figureCIENA CORP·Filed 1999·Granted Jan 23, 2001·87 cites·8 claims
- 1682US6900931B1Three-stage optical amplifier having flat spectral gainCIENA CORP·Filed 2000·Granted May 31, 2005·21 cites·24 claims
- 1781US8885248B2Raman amplifier gain compression systems and methods based on signal power monitoringCIENA CORP·Filed 2012·Granted Nov 11, 2014·4 cites·18 claims
- 1880US12107680B2Monitoring burst errors in forward error correction framesEQUINIX INC·Filed 2022·Granted Oct 1, 2024·1 cites·19 claims
- 1980US6061171AOptical amplifier having a variable attenuator controlled based on input powerCIENA CORP·Filed 1998·Granted May 9, 2000·67 cites·15 claims
- 2080US6057959AOptical amplifier having substantially uniform spectral gainCIENA CORP·Filed 1998·Granted May 2, 2000·66 cites·12 claims
- 2178US8867912B2Optical service channel systems and methods over high loss linksSRIDHAR BALAKRISHNAN·Filed 2012·Granted Oct 21, 2014·4 cites·20 claims
- 2278US6904241B2Power balanced optical add multiplexer and power balancing methods thereforeCIENA CORP·Filed 2001·Granted Jun 7, 2005·21 cites·19 claims
- 2377US7075711B2Optical communication system having dynamic gain equalizationCIENA CORP·Filed 2004·Granted Jul 11, 2006·11 cites·15 claims
- 2476US6525870B1Method and system for controlling Raman gain flatness sensitivity to pump laser wavelength variationCIENA CORP·Filed 2001·Granted Feb 25, 2003·16 cites·13 claims
- 2570US8373926B2Differentiation of power and channel count changes in optically amplified linksCIENA CORP·Filed 2005·Granted Feb 12, 2013·3 cites·17 claims
- 2669US7092148B1Optical communication system having dynamic gain equalizationCIENA CORP·Filed 2002·Granted Aug 15, 2006·7 cites·38 claims
- 2768US7400443B1Method and apparatus for optical amplifying device gain control with gain thresholdCIENA CORP·Filed 2003·Granted Jul 15, 2008·10 cites·17 claims
- 2866US8606108B2Dispersion slope compensation and dispersion map management systems and methodsSRIDHAR BALAKRISHNAN·Filed 2009·Granted Dec 10, 2013·3 cites·19 claims
- 2966US6885825B2Power balanced optical add/drop multiplexer and power balancing methods thereforeCIENA CORP·Filed 2001·Granted Apr 26, 2005·10 cites·23 claims
- 3065US8625993B2Wavelength-switched optical add-drop multiplexer with wavelength broadcasting capabilityBHATNAGAR VIPUL·Filed 2008·Granted Jan 7, 2014·4 cites·15 claims
- 3155US12028660B2Cascaded optical switchEQUINIX INC·Filed 2022·Granted Jul 2, 2024·0 cites·20 claims
- 3254US11637637B1Hybrid compensation of chromatic dispersion in optical networksEQUINIX INC·Filed 2021·Granted Apr 25, 2023·0 cites·20 claims
- 3354US9065247B2Differentiation of power and channel count changes in optically amplified linksCIENA CORP·Filed 2013·Granted Jun 23, 2015·0 cites·14 claims
- 3452US12133032B2Optical switch with integrated fast protectionEQUINIX INC·Filed 2022·Granted Oct 29, 2024·0 cites·20 claims
- 3552US6204958B1Optical amplifier having a substantially flat gain spectrumCIENA CORP·Filed 1998·Granted Mar 20, 2001·16 cites·6 claims
- 3651US2025233681A1Optical add drop multiplexers with asymmetrical filteringEQUINIX INC·Filed 2024·Application pending·0 cites
- 3741US2020162172A1Physical-Layer Security for Coherent Communications SystemCIENA CORP·Filed 2018·Application pending·0 cites
- 3835US6101423AMethod and apparatus for sorting componentsCIENA CORP·Filed 1998·Granted Aug 8, 2000·13 cites·20 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →