Inventor · Little Silver, NJ, US

Robert William Tkach

38Patents
19h-index
31Co-inventors
81Inventor score

Filing activity: Jan 27, 1989 → Dec 31, 2012

Most-cited inventions

PatentTitleAreaCited byStatus
US5225922A Optical transmission system equalizer Electricity 180 Expired
US6445485B1 Micro-machine polarization-state controller Physics 133 Expired
US5907420A System and method for mitigating cross-saturation in optically amplified networks Electricity 87 Expired
US5559920A Dispersion compensation in optical fiber communications Electricity 69 Expired
US5420868A Suppression of brillouin scattering in lightwave transmission system Physics 56 Expired
US5878177A Layered switch architectures for high-capacity optical transport networks Electricity 55 Expired
US5327516A Optical fiber for wavelength division multiplexing Physics 52 Expired
US6191877A WDM optical fiber system using Raman amplification Electricity 52 Expired
US5546210A Multi-channel optical fiber communication system Electricity 50 Expired
US5847862A Multi-channel optical fiber communication system Electricity 47 Expired
US5900968A Method of fast gain control in WDM optical networks Electricity 44 Expired
US6498673B1 Micro-machined tunable delay line Physics 38 Expired
US7088676B1 Methods and systems for fast restoration in a mesh network of optical cross connects Electricity 34 Expired
US5587830A High capacity optical fiber network Electricity 28 Expired
US6970417B1 Methods and systems for fast restoration in a mesh network of optical cross connects Electricity 26 Expired
US4908833A Distributed feedback laser for frequency modulated communication systems Electricity 25 Expired
US5027435A Optical communication systems using Fabry-Perot cavities Physics 23 Expired
US4905253A Distributed Bragg reflector laser for frequency modulated communication systems Electricity 21 Expired
US6292600A Angular-precision enhancement in free-space micromachined optical switches Physics 20 Expired
US5719696A High capacity optical fiber network Electricity 18 Expired
US6011892A Optical fiber for wavelength division multiplexing Electricity 12 Expired
US8204377B2 System, method and apparatus for joint self phase modulation compensation for coherent optical polarization-division-multiplexed orthogonal-frequency division-multiplexing systems Electricity 10 Active
US6317532A Method and apparatus for low loss via geometrical optimization in free-space micro-machined optical switches Physics 9 Expired
US6928244B1 System and method of wavelength add/drop multiplexing having client configurability Physics 9 Expired
US6606428B2 Angular-precision enhancement in free-space micromachined optical switches Physics 6 Expired

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