Etsuko Hayashi
46Patents
8h-index
25Co-inventors
71Inventor score
Filing activity: Feb 13, 1996 → Feb 23, 2010
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6388801B1 | Optical amplification apparatus utilizing Raman amplification and controlling method thereof | Electricity | 76 | Expired |
| US6510000B1 | Optical amplifier for wide band raman amplification of wavelength division multiplexed (WDM) signal lights | Electricity | 46 | Expired |
| US6624926B1 | Optical amplifier with pump light source control for raman amplification | Electricity | 46 | Expired |
| US6441951B1 | Optical amplification apparatus using Raman amplification | Electricity | 15 | Expired |
| US6891661B2 | Optical amplifier with pump light source control for Raman amplification | Electricity | 14 | Expired |
| US6738184B2 | Optical amplifier for amplifying multi-wavelength light | Electricity | 12 | Expired |
| US6577437B2 | Optical amplification apparatus utilizing Raman amplification and controlling method thereof | Electricity | 10 | Expired |
| US7359112B2 | Individual band gain equalizer for optical amplifiers | Electricity | 10 | Expired |
| US6823107B2 | Method and device for optical amplification | Electricity | 7 | Expired |
| US7061669B2 | Optical apparatus with loss compensation capability and optical amplifier for loss compensation | Electricity | 7 | Expired |
| US7042636B2 | Optical amplifier with pump light source control for Raman amplification | Electricity | 7 | Expired |
| US7813642B2 | Optical transmission apparatus and method of controlling the same | Electricity | 7 | Active |
| US6683712B2 | Optical amplification apparatus using Raman amplification | Electricity | 7 | Expired |
| US7715093B2 | Individual band gain equalizer for optical amplifiers | Electricity | 6 | Active |
| US7843631B2 | Gain control apparatus, optical transmission apparatus, gain control method for optical amplifier, and wavelength multiplex optical transmission system | Electricity | 6 | Active |
| US7268936B2 | Optical amplifier having polarization mode dispersion compensation function | Electricity | 5 | Expired |
| US7362499B2 | Optical amplifier with pump light source control for Raman amplification | Electricity | 5 | Expired |
| US8054455B2 | Optical amplifier provided with control function of pumping light, and optical transmission system using the same | Electricity | 5 | Active |
| US6873455B2 | Optical amplification apparatus utilizing raman amplification and controlling method thereof | Electricity | 5 | Expired |
| US7127139B2 | Optical multiplexing method and optical multiplexer, and optical amplifier using same | Electricity | 5 | Expired |
| US7119950B2 | Amplification method and optical amplifier for wavelength division multiplexed signal light | Electricity | 4 | Expired |
| US7180654B2 | Raman amplifier | Electricity | 4 | Expired |
| US7072100B2 | Optical amplifier and gain tilt compensation method | Electricity | 4 | Expired |
| US6847478B1 | Optical amplification apparatus using Raman amplification | Electricity | 4 | Expired |
| US7505197B2 | Optical amplifier provided with control function of pumping light, and optical transmission system using the same | Electricity | 4 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.