Inventor · Oviedo, FL, US

Guifang Li

42Patents
7h-index
51Co-inventors
72Inventor score

Filing activity: Jan 5, 1993 → Feb 1, 2021

Most-cited inventions

PatentTitleAreaCited byStatus
US5619103A Inductively coupled plasma generating devices Electricity 47 Expired
US7983570B2 Direct detection differential polarization-phase-shift keying for high spectral efficiency optical communication Electricity 18 Active
US7369779B1 Regeneration of optical phase modulated signals Electricity 15 Active
US7856184B2 Systems and methods for adaptive interference cancellation Electricity 11 Active
US7433604B1 Direct-detection optical differential 8-level phase shift keying (OD8PSK) for spectrally efficient transmission Electricity 9 Active
US7224863B1 All optical regeneration Physics 8 Expired
US6501579B2 Apparatus, system, and method for extracting an optical clock signal from an optical data signal Electricity 8 Expired
US8447191B2 Compensation of optical transmission impairments using digital backward propagation Electricity 6 Active
US7643760B1 Direct detection differential polarization-phase-shift keying for high spectral efficiency optical communication Electricity 6 Active
US5304255A Photovoltaic cell with photoluminescent plasma polymerized film Emerging Cross-Sectional Technologies 6 Expired
US8805209B2 Efficient computation and compensation of linear and nonlinear distortion in dispersion-managed fiber-opic transmission Electricity 5 Active
US8204389B2 Electronic post-compensation of optical transmission impairments using digital backward propagation Electricity 4 Active
US5519362A Optical current controlled oscillators Electricity 4 Expired
US8027588B2 Systems and methods for optical carrier recovery Electricity 3 Active
US8213795B2 Systems and methods of polarization time coding for optical communications Electricity 3 Active
US9263846B2 Systems and methods for amplifying space-multiplexed optical signals Electricity 3 Active
US8503881B1 Systems for extending WDM transmission into the O-band Electricity 2 Active
US10277354B1 Efficient mode coupling using ladder fibers Physics 2 Active
US9563011B2 Optical transmission using few-mode fibers Physics 2 Active
US9103961B2 Systems and methods for optical transmission using supermodes Physics 2 Active
US10715251B2 Free-space optical communications using few-mode pre-amplified receivers Electricity 2 Active
US8813522B2 Silicon photonic fiber and method of manufacture Physics 1 Active
US9214645B1 Inverted top emitting device and method for producing same Electricity 1 Active
US8103711B1 Dispersion compensation using digital infinite impulse response filtering Electricity 1 Active
US8326159B2 Electronic compensation of impairments using wavelet filters for backward propagation Electricity 1 Active

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