Inventor · Gillette, NJ, US

Andreas Leven

33Patents
11h-index
34Co-inventors
75Inventor score

Filing activity: Feb 28, 2002 → Nov 16, 2022

Most-cited inventions

PatentTitleAreaCited byStatus
US8655191B2 Symbol timing recovery in polarization division multiplexed coherent optical transmission system Electricity 31 Active
US7747177B2 Coherent phase-shift-keying Electricity 28 Active
US7061414B2 Optical digital-to-analog converter Physics 23 Expired
US7403711B2 Optical digital-to-analog converter and method of optically converting digital data to analog form Physics 19 Active
US8095019B2 Digital clock and data recovery scheme Electricity 16 Active
US8073345B2 Frequency estimation in an intradyne optical receiver Electricity 14 Active
US6798557B1 Direct optical N-state phase shift keying Electricity 14 Expired
US9020364B2 Optical receiver having a signal-equalization capability Electricity 13 Active
US7292792B2 High speed modulation of optical subcarriers Electricity 12 Expired
US7146109B2 Analog modulation of optical signals Electricity 12 Expired
US7809284B2 System and method for receiving coherent, polarization-multiplexed optical signals Electricity 11 Active
US7873284B2 Quadrature amplitude modulation of optical carriers Electricity 11 Active
US7496298B2 Adaptive optical equalization for chromatic and/or polarization mode dispersion compensation and joint opto-electronic equalizer architecture Electricity 9 Active
US7471855B2 Monlithically coupled waveguide and phototransistor Physics 7 Expired
US7548668B2 Programmable optical array Physics 6 Active
US8224134B2 Optoelectronic receiver Electricity 5 Active
US6911716B2 Bipolar transistors with vertical structures Electricity 5 Expired
US7929864B2 Optical beamforming transmitter Electricity 4 Active
US7155130B2 NRZ-to-RZ conversion for communication systems Electricity 3 Expired
US8055141B2 Balanced optical signal processor Electricity 3 Active
US9660732B2 Power adjustment of in-phase and quadrature components at a coherent optical receiver Electricity 1 Active
US7650084B2 Optical heterodyne receiver and method of extracting data from a phase-modulated input optical signal Electricity 1 Active
US7454112B2 Ridge and mesa optical waveguides Physics 1 Expired
US8116638B2 Radio frequency (RF) signal receiver using optical processing and associated methods Electricity 1 Active
US9106346B2 Method of decoding optical data signals Electricity 1 Active

Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.