Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10256911 | Harmonic generation and phase sensitive amplification using a bragg reflection waveguide | Inwoong Kim, Youichi Akasaka, Motoyoshi Sekiya | 2019-04-09 |
| 10020878 | Optical signal-to-noise ratio monitor and method for measuring optical signal to-noise ratio | Shoichiro Oda, Yasuhiko Aoki, Hiroki Oi, Satoru Okano, Yoichi Akasaka | 2018-07-10 |
| 9923634 | Harmonic generation and phase sensitive amplification using a bragg reflection waveguide | Inwoong Kim, Youichi Akasaka, Motoyoshi Sekiya | 2018-03-20 |
| 9843410 | Low-noise optical phase sensitive amplifier using a semiconductor nonlinear optical device | Inwoong Kim, Youichi Akasaka, Motoyoshi Sekiya | 2017-12-12 |
| 9515727 | In-band optical signal-to-noise ratio monitor | Youichi Akasaka, Motoyoshi Sekiya, Takuji Maeda, Hiroki Ooi, Satoru Okano | 2016-12-06 |
| 9515733 | Mitigation of spectral offset in an optical filter | Youichi Akasaka, Motoyoshi Sekiya, Hiroki Ooi, Satoru Okano, Takuji Maeda | 2016-12-06 |
| 9413455 | Apparatus and method for creating calibration coefficient used to monitor optical signal-to-noise ratio | Shoichiro Oda, Yasuhiko Aoki | 2016-08-09 |
| 9270369 | Correction table for interferometric optical signal-to-noise ratio monitor | Youichi Akasaka, Motoyoshi Sekiya, Takuji Maeda, Hiroki Ooi, Kentaro Nakamura +1 more | 2016-02-23 |
| 9252881 | Amplitude noise squeezing on multi-amplitude modulated signals | Youichi Akasaka | 2016-02-02 |
| 9246624 | Low noise optical phase-sensitive amplifier for dual-polarization modulation formats | Yoichi Akasaka, Motoyoshi Sekiya | 2016-01-26 |
| 9197323 | Asymmetric compensation of polarization dependent loss in dual-polarization optical systems | Olga Vassilieva, Inwoong Kim, Motoyoshi Sekiya | 2015-11-24 |
| 9112605 | Dual-polarization interferometric optical signal-to-noise ratio monitor | Youichi Akasaka, Motoyoshi Sekiya, Takuji Maeda, Hiroki Ooi, Satoru Okano | 2015-08-18 |
| 9030730 | Optical phase-sensitive amplifier for dual-polarization modulation formats | Motoyoshi Sekiya, Yoichi Akasaka | 2015-05-12 |
| 8983290 | System and method for monitoring a dual-polarization signal using an in-band supervisory signal | Inwoong Kim, Olga Vassilieva, Paparao Palacharla, Motoyoshi Sekiya | 2015-03-17 |
| 8909063 | Optical QPSK signal regeneration and amplification | Youichi Akasaka, Motoyoshi Sekiya, Inwoong Kim | 2014-12-09 |
| 8909062 | Optical signal regeneration and amplification of M-PSK and M-QAM modulation formats using reconfigurable wavelength selective processors and phase-sensitive amplifiers | Youichi Akasaka, Motoyoshi Sekiya, Inwoong Kim | 2014-12-09 |