Robert William Tkach
38Patents
19h-index
31Co-inventors
81Inventor score
Filing activity: Jan 27, 1989 → Dec 31, 2012
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| 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.