Youichi Akasaka

Person

Allen, TX, US

People

Patents Grantslast 30 patents

Information Patent Grant
Stimulated Brillouin scattering suppressed highly non-linear optica...
- Patent number 12,170,434
- Issue date Dec 17, 2024
- Fujitsu Limited
- Youichi Akasaka
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Optical signal power gain
- Patent number 12,074,690
- Issue date Aug 27, 2024
- Fujitsu Limited
- Youichi Akasaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Suppressing signal noise on an optical fiber
- Patent number 11,563,300
- Issue date Jan 24, 2023
- Fujitsu Limited
- Youichi Akasaka
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Dual polarization optical pumping
- Patent number 11,506,916
- Issue date Nov 22, 2022
- Fujitsu Limited
- Youichi Akasaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical amplification in an optical network
- Patent number 11,438,086
- Issue date Sep 6, 2022
- Fujitsu Limited
- Youichi Akasaka
- G02 - OPTICS
Information Patent Grant
Low-noise Raman amplifier
- Patent number 11,189,986
- Issue date Nov 30, 2021
- Fujitsu Limited
- Youichi Akasaka
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Optical system for compensating for signal loss
- Patent number 11,121,797
- Issue date Sep 14, 2021
- Fujitsu Limited
- Youichi Akasaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical system for compensating for signal loss
- Patent number 11,032,004
- Issue date Jun 8, 2021
- Fujitsu Limited
- Youichi Akasaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Phase shifter for an optical phase-sensitive amplifier
- Patent number 10,847,945
- Issue date Nov 24, 2020
- Fujitsu Limited
- Youichi Akasaka
- G02 - OPTICS
Information Patent Grant
Controlling gain modulation in optical communication networks
- Patent number 10,523,334
- Issue date Dec 31, 2019
- Fujitsu Limited
- Youichi Akasaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical phase-sensitive amplifier with signal noise removal
- Patent number 10,498,102
- Issue date Dec 3, 2019
- Fujitsu Limited
- Youichi Akasaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Intra data center optical switching
- Patent number 10,349,154
- Issue date Jul 9, 2019
- Fujitsu Limited
- Youichi Akasaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Harmonic generation and phase sensitive amplification using a bragg...
- Patent number 10,256,911
- Issue date Apr 9, 2019
- Fujitsu Limited
- Inwoong Kim
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Low noise colorless, directionless, contentionless reconfigurable o...
- Patent number 10,050,738
- Issue date Aug 14, 2018
- Fujitsu Limited
- Youichi Akasaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical phase-sensitive amplifier with fiber bragg grating phase sh...
- Patent number 9,997,887
- Issue date Jun 12, 2018
- Fujitsu Limited
- Youichi Akasaka
- G02 - OPTICS
Information Patent Grant
Harmonic generation and phase sensitive amplification using a bragg...
- Patent number 9,923,634
- Issue date Mar 20, 2018
- Fujitsu Limited
- Inwoong Kim
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Low-noise optical phase sensitive amplifier using a semiconductor n...
- Patent number 9,843,410
- Issue date Dec 12, 2017
- Fujitsu Limited
- Jeng-yuan Yang
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical phase-sensitive amplifier with raman amplifier intermediate...
- Patent number 9,837,788
- Issue date Dec 5, 2017
- Fujitsu Limited
- Youichi Akasaka
- G02 - OPTICS
Information Patent Grant
Mitigation of spectral offset in an optical filter
- Patent number 9,515,733
- Issue date Dec 6, 2016
- Fujitsu Limited
- Youichi Akasaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
In-band optical signal-to-noise ratio monitor
- Patent number 9,515,727
- Issue date Dec 6, 2016
- Fujitsu Limited
- Jeng-Yuan Yang
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Correction table for interferometric optical signal-to-noise ratio...
- Patent number 9,270,369
- Issue date Feb 23, 2016
- Fujitsu Limited
- Jeng-Yuan Yang
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Amplitude noise squeezing on multi-amplitude modulated signals
- Patent number 9,252,881
- Issue date Feb 2, 2016
- Fujitsu Limited
- Youichi Akasaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Dual-polarization interferometric optical signal-to-noise ratio mon...
- Patent number 9,112,605
- Issue date Aug 18, 2015
- Fujitsu Limited
- Jeng-Yuan Yang
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical QPSK signal regeneration and amplification
- Patent number 8,909,063
- Issue date Dec 9, 2014
- Fujitsu Limited
- Jeng-yuan Yang
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical signal regeneration and amplification of M-PSK and M-QAM mo...
- Patent number 8,909,062
- Issue date Dec 9, 2014
- Fujitsu Limited
- Jeng-yuan Yang
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and system of automatic regeneration of optical signals
- Patent number 8,873,950
- Issue date Oct 28, 2014
- Fujitsu Limited
- Youichi Akasaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and system for automatic lane negotiation in an optical network
- Patent number 8,798,454
- Issue date Aug 5, 2014
- Fujitsu Limited
- Youichi Akasaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
System and method for compensating for polarization dependent loss
- Patent number 8,705,167
- Issue date Apr 22, 2014
- Fujitsu Limited
- Youichi Akasaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
System and method for reducing polarization dependent loss
- Patent number 8,543,006
- Issue date Sep 24, 2013
- Fujitsu Limited
- Olga I Vassilieva
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical amplifier card with pluggable pump laser modules
- Patent number 8,284,479
- Issue date Oct 9, 2012
- Fujitsu Limited
- Youichi Akasaka
- H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents

Information Patent Application
STIMULATED BRILLOUIN SCATTERING SUPPRESSED HIGHLY NON-LINEAR OPTICA...
- Publication number 20250055248
- Publication date Feb 13, 2025
- Fujitsu Limited
- Youichi AKASAKA
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
OPTICAL SIGNAL AMPLIFICATION
- Publication number 20240258758
- Publication date Aug 1, 2024
- Fujitsu Limited
- Youichi AKASAKA
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
OPTICAL SIGNAL POWER GAIN
- Publication number 20240171297
- Publication date May 23, 2024
- Fujitsu Limited
- Youichi AKASAKA
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
STIMULATED BRILLOUIN SCATTERING SUPPRESSED HIGHLY NON-LINEAR OPTICA...
- Publication number 20230283039
- Publication date Sep 7, 2023
- Fujitsu Limited
- Youichi AKASAKA
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
PHOSPHOROUS DOPED FIBER-BASED RAMAN AMPLIFIER
- Publication number 20230139856
- Publication date May 4, 2023
- Fujitsu Limited
- Youichi AKASAKA
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
RAMAN OPTICAL AMPLIFIER WITH FABRY-PEROT PUMP LASER
- Publication number 20230102535
- Publication date Mar 30, 2023
- Fujitsu Limited
- Youichi AKASAKA
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
DUAL POLARIZATION OPTICAL PUMPING
- Publication number 20220326553
- Publication date Oct 13, 2022
- Fujitsu Limited
- Youichi AKASAKA
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
OPTICAL AMPLIFICATION IN AN OPTICAL NETWORK
- Publication number 20210226719
- Publication date Jul 22, 2021
- Fujitsu Limited
- Youichi Akasaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
SUPPRESSING SIGNAL NOISE ON AN OPTICAL FIBER
- Publication number 20210083450
- Publication date Mar 18, 2021
- Fujitsu Limited
- Youichi Akasaka
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
LOW-NOISE RAMAN AMPLIFIER
- Publication number 20200099193
- Publication date Mar 26, 2020
- Fujitsu Limited
- Youichi Akasaka
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
PHASE SHIFTER FOR AN OPTICAL PHASE-SENSITIVE AMPLIFIER
- Publication number 20190214782
- Publication date Jul 11, 2019
- Fujitsu Limited
- Youichi Akasaka
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
INTRA DATA CENTER OPTICAL SWITCHING
- Publication number 20190075378
- Publication date Mar 7, 2019
- Fujitsu Limited
- Youichi Akasaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
OPTICAL PHASE-SENSITIVE AMPLIFIER WITH SIGNAL NOISE REMOVAL
- Publication number 20180366900
- Publication date Dec 20, 2018
- Fujitsu Limited
- Youichi Akasaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
LOW NOISE COLORLESS, DIRECTIONLESS, CONTENTIONLESS RECONFIGURABLE O...
- Publication number 20180212701
- Publication date Jul 26, 2018
- Fujitsu Limited
- Youichi Akasaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
HARMONIC GENERATION AND PHASE SENSITIVE AMPLIFICATION USING A BRAGG...
- Publication number 20180159629
- Publication date Jun 7, 2018
- Fujitsu Limited
- Inwoong Kim
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
LOW-NOISE OPTICAL PHASE SENSITIVE AMPLIFIER USING A SEMICONDUCTOR N...
- Publication number 20170141871
- Publication date May 18, 2017
- Fujitsu Limited
- Jeng-Yuan Yang
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
HARMONIC GENERATION AND PHASE SENSITIVE AMPLIFICATION USING A BRAGG...
- Publication number 20170085322
- Publication date Mar 23, 2017
- Fujitsu Limited
- Inwoong Kim
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
OPTICAL PHASE-SENSITIVE AMPLIFIER WITH RAMAN AMPLIFIER INTERMEDIATE...
- Publication number 20160261088
- Publication date Sep 8, 2016
- Fujitsu Limited
- Youichi Akasaka
- G02 - OPTICS
Information Patent Application
IN-BAND OPTICAL SIGNAL-TO-NOISE RATIO MONITOR
- Publication number 20160261340
- Publication date Sep 8, 2016
- Fujitsu Limited
- Jeng-Yuan Yang
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
MITIGATION OF SPECTRAL OFFSET IN AN OPTICAL FILTER
- Publication number 20160261343
- Publication date Sep 8, 2016
- Fujitsu Limited
- Youichi Akasaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
CORRECTION TABLE FOR INTERFEROMETRIC OPTICAL SIGNAL-TO-NOISE RATION...
- Publication number 20150200724
- Publication date Jul 16, 2015
- FUJITSU LIMITED
- Jeng-Yuan Yang
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
DUAL-POLARIZATION INTERFEROMETRIC OPTICAL SIGNAL-TO-NOISE RATIO MON...
- Publication number 20140369678
- Publication date Dec 18, 2014
- Jeng-Yuan Yang
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
AMPLITUDE NOISE SQUEEZING ON MULTI-AMPLITUDE MODULATED SIGNALS
- Publication number 20140355105
- Publication date Dec 4, 2014
- Youichi Akasaka
- G02 - OPTICS
Information Patent Application
OPTICAL QPSK SIGNAL REGENERATION AND AMPLIFICATION
- Publication number 20140119743
- Publication date May 1, 2014
- Fujitsu Network Communications, Inc.
- Jeng-yuan Yang
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
System and Method for Splicing Optical Fibers in Order to Mitigate...
- Publication number 20140102148
- Publication date Apr 17, 2014
- FUJITSU LIMITED
- Youichi Akasaka
- G02 - OPTICS
Information Patent Application
Method and System for Reducing Noise Associated with Optical Signals
- Publication number 20140037290
- Publication date Feb 6, 2014
- FUJITSU LIMITED
- Youichi Akasaka
- G02 - OPTICS
Information Patent Application
OPTICAL SIGNAL REGENERATION AND AMPLIFICATION OF M-PSK AND M-QAM MO...
- Publication number 20130272702
- Publication date Oct 17, 2013
- Fujitsu Network Communications, Inc.
- Jeng-yuan Yang
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
METHOD AND SYSTEM OF AUTOMATIC REGENERATION OF OPTICAL SIGNALS
- Publication number 20130084064
- Publication date Apr 4, 2013
- Fujitsu Limited
- Youichi Akasaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
SYSTEM AND METHOD FOR REDUCING POLARIZATION DEPENDENT LOSS
- Publication number 20120063783
- Publication date Mar 15, 2012
- Fujitsu Limited
- Olga I. Vassilieva
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
SYSTEM AND METHOD FOR COMPENSATING FOR POLARIZATION DEPENDENT LOSS
- Publication number 20120050846
- Publication date Mar 1, 2012
- Fujitsu Limited
- Youichi Akasaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Youichi Akasaka

Person

Patents Grantslast 30 patents

Stimulated Brillouin scattering suppressed highly non-linear optica...

Optical signal power gain

Suppressing signal noise on an optical fiber

Dual polarization optical pumping

Optical amplification in an optical network

Low-noise Raman amplifier

Optical system for compensating for signal loss

Optical system for compensating for signal loss

Phase shifter for an optical phase-sensitive amplifier

Controlling gain modulation in optical communication networks

Optical phase-sensitive amplifier with signal noise removal

Intra data center optical switching

Harmonic generation and phase sensitive amplification using a bragg...

Low noise colorless, directionless, contentionless reconfigurable o...

Optical phase-sensitive amplifier with fiber bragg grating phase sh...

Harmonic generation and phase sensitive amplification using a bragg...

Low-noise optical phase sensitive amplifier using a semiconductor n...

Optical phase-sensitive amplifier with raman amplifier intermediate...

Mitigation of spectral offset in an optical filter

In-band optical signal-to-noise ratio monitor

Correction table for interferometric optical signal-to-noise ratio...

Amplitude noise squeezing on multi-amplitude modulated signals

Dual-polarization interferometric optical signal-to-noise ratio mon...

Optical QPSK signal regeneration and amplification

Optical signal regeneration and amplification of M-PSK and M-QAM mo...

Method and system of automatic regeneration of optical signals

Method and system for automatic lane negotiation in an optical network

System and method for compensating for polarization dependent loss

System and method for reducing polarization dependent loss

Optical amplifier card with pluggable pump laser modules

Patents Applicationslast 30 patents

STIMULATED BRILLOUIN SCATTERING SUPPRESSED HIGHLY NON-LINEAR OPTICA...

OPTICAL SIGNAL AMPLIFICATION

OPTICAL SIGNAL POWER GAIN

STIMULATED BRILLOUIN SCATTERING SUPPRESSED HIGHLY NON-LINEAR OPTICA...

PHOSPHOROUS DOPED FIBER-BASED RAMAN AMPLIFIER

RAMAN OPTICAL AMPLIFIER WITH FABRY-PEROT PUMP LASER

DUAL POLARIZATION OPTICAL PUMPING

OPTICAL AMPLIFICATION IN AN OPTICAL NETWORK

SUPPRESSING SIGNAL NOISE ON AN OPTICAL FIBER

LOW-NOISE RAMAN AMPLIFIER

PHASE SHIFTER FOR AN OPTICAL PHASE-SENSITIVE AMPLIFIER

INTRA DATA CENTER OPTICAL SWITCHING

OPTICAL PHASE-SENSITIVE AMPLIFIER WITH SIGNAL NOISE REMOVAL

LOW NOISE COLORLESS, DIRECTIONLESS, CONTENTIONLESS RECONFIGURABLE O...

HARMONIC GENERATION AND PHASE SENSITIVE AMPLIFICATION USING A BRAGG...

LOW-NOISE OPTICAL PHASE SENSITIVE AMPLIFIER USING A SEMICONDUCTOR N...

HARMONIC GENERATION AND PHASE SENSITIVE AMPLIFICATION USING A BRAGG...

OPTICAL PHASE-SENSITIVE AMPLIFIER WITH RAMAN AMPLIFIER INTERMEDIATE...

IN-BAND OPTICAL SIGNAL-TO-NOISE RATIO MONITOR

MITIGATION OF SPECTRAL OFFSET IN AN OPTICAL FILTER

CORRECTION TABLE FOR INTERFEROMETRIC OPTICAL SIGNAL-TO-NOISE RATION...

DUAL-POLARIZATION INTERFEROMETRIC OPTICAL SIGNAL-TO-NOISE RATIO MON...

AMPLITUDE NOISE SQUEEZING ON MULTI-AMPLITUDE MODULATED SIGNALS

OPTICAL QPSK SIGNAL REGENERATION AND AMPLIFICATION

System and Method for Splicing Optical Fibers in Order to Mitigate...

Method and System for Reducing Noise Associated with Optical Signals

OPTICAL SIGNAL REGENERATION AND AMPLIFICATION OF M-PSK AND M-QAM MO...

METHOD AND SYSTEM OF AUTOMATIC REGENERATION OF OPTICAL SIGNALS

SYSTEM AND METHOD FOR REDUCING POLARIZATION DEPENDENT LOSS

SYSTEM AND METHOD FOR COMPENSATING FOR POLARIZATION DEPENDENT LOSS