Inventor · disambiguated record
Chandrasekhar Sethumadhavan
Also filed as: SETHUMADHAVAN CHANDRASEKHAR
18 granted patents·3 pending applications·111 citations·filing 2007–2019
93Inventor score
Files withLIU XIANG10ALCATEL LUCENT USA INC4SETHUMADHAVAN CHANDRASEKHAR2ALCATEL LUCENT1ANDREW CHRAPLYVY R1
Top patents by PatentIndex Score
21 records- 0195US10404400B2Optical transport system employing direct-detection self-coherent receivers and compatible transmittersALCATEL LUCENT USA INC·Filed 2017·Granted Sep 3, 2019·16 cites·17 claims
- 0294US8611751B2System, apparatus and method for communicating data via polarization multiplexingLIU XIANG·Filed 2010·Granted Dec 17, 2013·16 cites·15 claims
- 0389US9203682B2Frequency-dependent I/Q-signal imbalance correction coherent optical transceiversWINZER PETER J·Filed 2010·Granted Dec 1, 2015·11 cites·19 claims
- 0487US10972215B2Methods and apparatus for joint use of probabilistic signal shaping and forward error correctionNOKIA SOLUTIONS & NETWORKS OY·Filed 2019·Granted Apr 6, 2021·6 cites·22 claims
- 0585US9344779B2Method and apparatus for space-division multiplexing systemsSETHUMADHAVAN CHANDRASEKHAR·Filed 2012·Granted May 17, 2016·9 cites·23 claims
- 0683US8842997B2Apparatus and method for generating interleaved return-to-zero (IRZ) polarization-division multiplexed (PDM) signalsLIU XIANG·Filed 2011·Granted Sep 23, 2014·7 cites·20 claims
- 0783US8594515B2Digital phase conjugation for fiber-optic linksLIU XIANG·Filed 2011·Granted Nov 26, 2013·7 cites·20 claims
- 0880US9300400B2Communication through multiplexed one-dimensional optical signalsLIU XIANG·Filed 2012·Granted Mar 29, 2016·5 cites·23 claims
- 0980US9160456B2Dispersion management for inhomogeneous fiber-optic linksALCATEL LUCENT USA INC·Filed 2013·Granted Oct 13, 2015·5 cites·28 claims
- 1079US8180227B2Digital coherent detection of multi-carrier optical signalLIU XIANG·Filed 2009·Granted May 15, 2012·7 cites·20 claims
- 1178US8515286B2Coherent optical receiver for pilot-assisted data transmissionLIU XIANG·Filed 2010·Granted Aug 20, 2013·5 cites·20 claims
- 1276US9419722B2Feedback for electronic pre-distortion in an optical transmitterALCATEL LUCENT USA INC·Filed 2014·Granted Aug 16, 2016·4 cites·17 claims
- 1372US8121494B2System and method for receiving high spectral efficiency optical DPSK signalsANDREW CHRAPLYVY R·Filed 2008·Granted Feb 21, 2012·9 cites·16 claims
- 1468US8953949B2Method and apparatus for transmitting high-level QAM optical signals with binary drive signalsLIU XIANG·Filed 2011·Granted Feb 10, 2015·2 cites·20 claims
- 1566US8660433B2Pilot-assisted data transmission in a coherent optical-communication systemLIU XIANG·Filed 2010·Granted Feb 25, 2014·2 cites·23 claims
- 1648US9264146B2Detection and removal of cycle slip from received signalsALCATEL LUCENT·Filed 2014·Granted Feb 16, 2016·0 cites·21 claims
- 1743US8923706B2Frequency equalization for an optical transmitterSETHUMADHAVAN CHANDRASEKHAR·Filed 2012·Granted Dec 30, 2014·0 cites·20 claims
- 1843US2009086215A1Polarization-Multiplexed Multilevel Differential Phase Shift Keyed Signal DetectorLIU XIANG·Filed 2007·Application pending·0 cites
- 1942US2015086193A1Fiber-nonlinearity pre-compensation processing for an optical transmitterALCATEL LUCENT USA INC·Filed 2013·Application pending·0 cites
- 2041US8483575B2Apparatus and method for generating frequency-locked optical comb sourcesLIU XIANG·Filed 2010·Granted Jul 9, 2013·0 cites·21 claims
- 2136US2012002283A1Method and apparatus for raman co-pumpsXIE CHONGJIN·Filed 2010·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →