Inventor · disambiguated record
Qianfan Xu
Also filed as: XU QIANFAN
31 granted patents·9 pending applications·319 citations·filing 2005–2025
97Inventor score
Files withFUTUREWEI TECHNOLOGIES INC16CISCO TECH INC5HEWLETT PACKARD DEVELOPMENT CO5CORNELL RES FOUNDATION INC3XU QIANFAN3
Top patents by PatentIndex Score
40 records- 0197US7751654B2Electro-optic modulationCORNELL RES FOUNDATION INC·Filed 2006·Granted Jul 6, 2010·76 cites·14 claims
- 0295US7532785B1Photonic interconnects for computer system devicesHEWLETT PACKARD DEVELOPMENT CO·Filed 2007·Granted May 12, 2009·44 cites·19 claims
- 0394US7519257B2Waveguide structure for guiding light in low-index materialCORNELL RES FOUNDATION INC·Filed 2005·Granted Apr 14, 2009·55 cites·38 claims
- 0493US10203454B2Dense wavelength-division multiplexing (DWDM) network and methodFUTUREWEI TECHNOLOGIES INC·Filed 2017·Granted Feb 12, 2019·10 cites·31 claims
- 0593US8582937B2Dual-ring silicon electro-optic modulatorXU QIANFAN·Filed 2010·Granted Nov 12, 2013·20 cites·21 claims
- 0692US9523870B2Vertical PN silicon modulatorFUTUREWEI TECHNOLOGIES INC·Filed 2015·Granted Dec 20, 2016·10 cites·25 claims
- 0792US8295655B2Electro-optical modulatorMANIPATRUNI SASIKANTH·Filed 2007·Granted Oct 23, 2012·16 cites·44 claims
- 0886US9507180B2Patterned poly silicon structure as top electric contact to MOS-type optical modulatorsFUTUREWEI TECHNOLOGIES INC·Filed 2013·Granted Nov 29, 2016·4 cites·17 claims
- 0983US9838239B2Digital generation of multi-level phase shifting with a Mach-Zehnder modulator (MZM)FUTUREWEI TECHNOLOGIES INC·Filed 2016·Granted Dec 5, 2017·5 cites·20 claims
- 1083US9632281B2Free space grating couplerFUTUREWEI TECHNOLOGIES INC·Filed 2014·Granted Apr 25, 2017·5 cites·5 claims
- 1182US8179935B2Tunable optical resonatorSANTORI CHARLES·Filed 2008·Granted May 15, 2012·12 cites·20 claims
- 1282US7889956B2Photonic interconnects for computer system devicesHEWLETT PACKARD DEVELOPMENT CO·Filed 2009·Granted Feb 15, 2011·7 cites·19 claims
- 1380US9709741B2Inverse taper waveguides for low-loss mode convertersFUTUREWEI TECHNOLOGIES INC·Filed 2015·Granted Jul 18, 2017·3 cites·18 claims
- 1480US8737845B2Optical engine for point-to-point communicationsFIORENTINO MARCO·Filed 2008·Granted May 27, 2014·9 cites·18 claims
- 1580US8335434B2All optical fast distributed arbitration in a computer system deviceBEAUSOLEIL RAYMOND G·Filed 2008·Granted Dec 18, 2012·9 cites·10 claims
- 1680US7965914B2Critically coupled microring resonator and methodHEWLETT PACKARD DEVELOPMENT CO·Filed 2008·Granted Jun 21, 2011·9 cites·20 claims
- 1779US9933570B2Integration of V-grooves on silicon-on-insulator (SOI) platform for direct fiber couplingFUTUREWEI TECHNOLOGIES INC·Filed 2016·Granted Apr 3, 2018·3 cites·19 claims
- 1877US10133098B2MOS capacitor optical modulator with transparent conductive and low-refractive-index gateFUTUREWEI TECHNOLOGIES INC·Filed 2015·Granted Nov 20, 2018·3 cites·20 claims
- 1977US10120135B2Inverse taper waveguides for low-loss mode convertersFUTUREWEI TECHNOLOGIES INC·Filed 2017·Granted Nov 6, 2018·2 cites·20 claims
- 2075US8369665B2Hybrid guided-mode resonance filter and method employing distributed bragg reflectionHEWLETT PACKARD DEVELOPMENT CO·Filed 2008·Granted Feb 5, 2013·6 cites·15 claims
- 2174US9244227B2Polarization splitter/combiner based on a one-dimensional grating couplerFUTUREWEI TECHNOLOGIES INC·Filed 2013·Granted Jan 26, 2016·3 cites·17 claims
- 2273US8492700B2Dynamic impedance receiver circuit having a first and second impedances during charging and discharging phases respectively for ultrafast low-power photodetectorFATTAL DAVID A·Filed 2008·Granted Jul 23, 2013·2 cites·15 claims
- 2370US10641966B2Free space grating couplerFUTUREWEI TECHNOLOGIES INC·Filed 2017·Granted May 5, 2020·1 cites·20 claims
- 2469US8891577B2System and method for a micro ring laserXU QIANFAN·Filed 2008·Granted Nov 18, 2014·3 cites·13 claims
- 2564US10268056B2Interdigitated optical modulatorFUTUREWEI TECHNOLOGIES INC·Filed 2017·Granted Apr 23, 2019·0 cites·18 claims
- 2664US2025334849A1Integrated electro-optical modulatorCISCO TECH INC·Filed 2025·Application pending·0 cites
- 2763US7907811B2Optical waveguides and methods of making the sameHEWLETT PACKARD DEVELOPMENT CO·Filed 2008·Granted Mar 15, 2011·2 cites·17 claims
- 2862US12476713B2Fabrication tolerant wavelength demultiplexer receiverCISCO TECH INC·Filed 2023·Granted Nov 18, 2025·0 cites·20 claims
- 2962US9823499B2Patterned poly silicon structure as top electric contact to MOS-type optical modulatorsFUTUREWEI TECHNOLOGIES INC·Filed 2016·Granted Nov 21, 2017·0 cites·13 claims
- 3057US2024402430A1Integrated photonic 2x3 couplerCISCO TECH INC·Filed 2023·Application pending·0 cites
- 3155US2024241332A1Embedded radio frequency shield between integrated optical modulator and silicon substrateCISCO TECH INC·Filed 2023·Application pending·0 cites
- 3253US2025172831A1Electro-optical modulators integrated with photodiodesCISCO TECH INC·Filed 2023·Application pending·0 cites
- 3351US2010266232A1Electro-optic modulationCORNELL RES FOUNDATION INC·Filed 2010·Application pending·0 cites
- 3450US10645473B2All-optical networks based on switchable wavelength connects (SWCs)FUTUREWEI TECHNOLOGIES INC·Filed 2018·Granted May 5, 2020·0 cites·24 claims
- 3550US2011058782A1Optical waveguides and methods of making the sameFATTAL DAVID·Filed 2009·Application pending·0 cites
- 3648US9696567B2Interdigitated optical modulatorFUTUREWEI TECHNOLOGIES INC·Filed 2015·Granted Jul 4, 2017·0 cites·18 claims
- 3747US8731355B2Optical logic deviceXU QIANFAN·Filed 2007·Granted May 20, 2014·0 cites·22 claims
- 3847US2012033294A1Optical apparatus, system and method employing an endohedral metallofullereneBEAUSOLEIL RAYMOND G·Filed 2009·Application pending·0 cites
- 3945US2011274438A1Optical engine for point-to-point communicationsFIORENTINO MARCO·Filed 2009·Application pending·0 cites
- 4035US2015293299A1Suspended Ridge Oxide WaveguideFUTUREWEI TECHNOLOGIES INC·Filed 2015·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →