Issued Patents All Time
Showing 1–25 of 61 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12170434 | Stimulated Brillouin scattering suppressed highly non-linear optical fiber | — | 2024-12-17 |
| 12074690 | Optical signal power gain | — | 2024-08-27 |
| 11563300 | Suppressing signal noise on an optical fiber | Tadashi Ikeuchi | 2023-01-24 |
| 11506916 | Dual polarization optical pumping | — | 2022-11-22 |
| 11438086 | Optical amplification in an optical network | Takeshi Hoshida | 2022-09-06 |
| 11189986 | Low-noise Raman amplifier | Daniel Bihon, Tadashi Ikeuchi | 2021-11-30 |
| 11121797 | Optical system for compensating for signal loss | Tadashi Ikeuchi | 2021-09-14 |
| 11032004 | Optical system for compensating for signal loss | Tadashi Ikeuchi | 2021-06-08 |
| 10847945 | Phase shifter for an optical phase-sensitive amplifier | Tadashi Ikeuchi | 2020-11-24 |
| 10523334 | Controlling gain modulation in optical communication networks | Tadashi Ikeuchi | 2019-12-31 |
| 10498102 | Optical phase-sensitive amplifier with signal noise removal | Tadashi Ikeuchi, Daniel Bihon, Richard L. Colter | 2019-12-03 |
| 10349154 | Intra data center optical switching | Tadashi Ikeuchi | 2019-07-09 |
| 10256911 | Harmonic generation and phase sensitive amplification using a bragg reflection waveguide | Inwoong Kim, Jeng-Yuan Yang, Motoyoshi Sekiya | 2019-04-09 |
| 10050738 | Low noise colorless, directionless, contentionless reconfigurable optical add/drop multiplexer | Takeshi Hoshida, Tadashi Ikeuchi | 2018-08-14 |
| 9997887 | Optical phase-sensitive amplifier with fiber bragg grating phase shifter | Tadashi Ikeuchi | 2018-06-12 |
| 9923634 | Harmonic generation and phase sensitive amplification using a bragg reflection waveguide | Inwoong Kim, Jeng-Yuan Yang, Motoyoshi Sekiya | 2018-03-20 |
| 9843410 | Low-noise optical phase sensitive amplifier using a semiconductor nonlinear optical device | Jeng-Yuan Yang, Inwoong Kim, Motoyoshi Sekiya | 2017-12-12 |
| 9837788 | Optical phase-sensitive amplifier with raman amplifier intermediate stage | Motoyoshi Sekiya | 2017-12-05 |
| 9515727 | In-band optical signal-to-noise ratio monitor | Jeng-Yuan Yang, Motoyoshi Sekiya, Takuji Maeda, Hiroki Ooi, Satoru Okano | 2016-12-06 |
| 9515733 | Mitigation of spectral offset in an optical filter | Jeng-Yuan Yang, Motoyoshi Sekiya, Hiroki Ooi, Satoru Okano, Takuji Maeda | 2016-12-06 |
| 9281654 | Raman amplifier, optical repeater, and Raman amplification method | Yoshihiro Emori, Shu Namiki | 2016-03-08 |
| 9270369 | Correction table for interferometric optical signal-to-noise ratio monitor | Jeng-Yuan Yang, Motoyoshi Sekiya, Takuji Maeda, Hiroki Ooi, Kentaro Nakamura +1 more | 2016-02-23 |
| 9252881 | Amplitude noise squeezing on multi-amplitude modulated signals | Jeng-Yuan Yang | 2016-02-02 |
| 9112605 | Dual-polarization interferometric optical signal-to-noise ratio monitor | Jeng-Yuan Yang, Motoyoshi Sekiya, Takuji Maeda, Hiroki Ooi, Satoru Okano | 2015-08-18 |
| 8909062 | Optical signal regeneration and amplification of M-PSK and M-QAM modulation formats using reconfigurable wavelength selective processors and phase-sensitive amplifiers | Jeng-Yuan Yang, Motoyoshi Sekiya, Inwoong Kim | 2014-12-09 |