Hiroki Ooi
83Patents
17h-index
48Co-inventors
80Inventor score
Filing activity: Sep 11, 1996 → Mar 5, 2015
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6081360A | Method and apparatus for optimizing dispersion in an optical fiber transmission line in accordance with an optical signal power level | Electricity | 78 | Expired |
| US6362913B1 | Optical modulation apparatus and method of controlling optical modulator | Physics | 69 | Expired |
| US5991477A | Optical transmission system, optical multiplexing transmission system, and related peripheral techniques | Electricity | 48 | Expired |
| US6661974B1 | Optical transmitter and optical transmission system | Electricity | 48 | Expired |
| US5805321A | Control unit for optical modulators producing multiplexed optical output signal | Electricity | 42 | Expired |
| US5815294A | Optical transmission system with transmission characteristic measuring device | Electricity | 40 | Expired |
| US5926297A | Optical modulating device and optical modulating method | Electricity | 39 | Expired |
| US5909297A | Drift compensating circuit for optical modulators in an optical system | Electricity | 38 | Expired |
| US5870213A | Optical transmission system, optical multiplexing transmission system, and related peripheral techniques | Electricity | 35 | Expired |
| US5896217A | Optical transmission system, optical multiplexing transmission system, and related peripheral techniques | Electricity | 33 | Expired |
| US6278539A | Optical modulation apparatus and method of controlling | Physics | 30 | Expired |
| US7817923B2 | Optical transmitting apparatus, optical receiving apparatus, and optical communication system comprising them | Electricity | 27 | Active |
| US6728491B1 | Polarization-mode dispersion detecting method, and a dispersion compensation controlling apparatus and a dispersion compensation controlling method | Electricity | 23 | Expired |
| US5754322A | Optical transmission system, optical multiplexing transmission system, and related peripheral techniques | Electricity | 22 | Expired |
| US6118564A | Optical time division demultiplexing apparatus and demultiplexed signal switching method as well as optical time division multiplex transmission system | Electricity | 21 | Expired |
| US6411416B1 | Method and apparatus for minimizing the intensity of a specific frequency component of an optical signal travelling through an optical fiber transmission line to thereby minimize the total dispersion | Electricity | 20 | Expired |
| US5760937A | Optical demultiplexer | Electricity | 19 | Expired |
| US6456411B1 | Method of setting signal wavelength in optical transmission system | Electricity | 17 | Expired |
| US6204949A | Method and device for extracting a timing signal | Electricity | 17 | Expired |
| US7620321B2 | Optical transmitting apparatus, method of increasing the number of paths of the apparatus, and optical switch module for increasing the number of paths of the apparatus | Electricity | 15 | Active |
| US5982530A | Apparatus for driving an optical modulator to measure, and compensate for, dispersion in an optical transmission line | Electricity | 15 | Expired |
| US6262828A | Method and apparatus of driving an optical modulator to measure, and compensate for, dispersion in an optical transmission line | Electricity | 14 | Expired |
| US6925262B2 | Method and system for compensating chromatic dispersion | Electricity | 13 | Expired |
| US7477848B2 | Optical receiving apparatus and method for controlling the optical receiving apparatus | Electricity | 12 | Active |
| US5917628A | Optical time-division multiplexer capable of supplying stable output signal | Electricity | 12 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.