P

Inventor

NITTA JUN

JP54 patents
⚠️ This page may combine multiple inventors who share the name “NITTA JUN”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

CANON KK

28 patents
US5901166AMay 4, 1999

Oscillation polarization mode selective semiconductor laser, light transmitter and optical communication system using the laser

CANON KK72 citations96
US5212577AMay 18, 1993

Optical communication equipment and optical communication method

CANON KK60 citations96
US5659560AAug 19, 1997

Apparatus and method for driving oscillation polarization selective light source, and optical communication system using the same

CANON KK92 citations95
US6252895B1Jun 26, 2001

Distributed feedback semiconductor laser in which light intensity distributions differ in different polarization modes, and driving method therefor

CANON KK35 citations93
US6031860AFeb 29, 2000

Optical device capable of switching output intensity of light of predetermined polarized wave, optical transmitter using the device, network using the transmitter, and method of driving optical device

CANON KK41 citations93
US5822352AOct 13, 1998

Optical semiconductor apparatus, fabrication method thereof, modulation method therefor, light source apparatus and optical communication system using the same

CANON KK28 citations93
US5790581AAug 4, 1998

Oscillation polarization mode selective semiconductor laser, light transmitter and optical communication system using the laser

CANON KK21 citations93
US5608572AMar 4, 1997

Optical apparatus and a method using the apparatus, which utilizes the occurrence of a change in a both-end voltage of an amplifying region

CANON KK24 citations93
US5606176AFeb 25, 1997

Strained quantum well structure having variable polarization dependence and optical device including the strained quantum well structure

CANON KK41 citations93
US5590145ADec 31, 1996

Light-emitting apparatus capable of selecting polarization direction, optical communication system, and polarization modulation control method

CANON KK48 citations93
US5521754AMay 28, 1996

Optical apparatus and a method using the apparatus, which utilizes the occurrence of a change in a both-end voltage of an amplifying region

CANON KK28 citations93
US5471335ANov 28, 1995

Semiconductor optical amplifier device and a method of using the same

CANON KK25 citations93
US5202782AApr 13, 1993

Optical communication method and optical communication system

CANON KK37 citations93
US6334014B1Dec 25, 2001

Optical fiber apparatus provided with demultiplexing/multiplexing unit on fiber's end portion, optical detecting apparatus provided with demultiplexing/multiplexing unit on its light receiving surface, and optical transmission system using the same

CANON KK41 citations92
US5926497AJul 20, 1999

Diffraction grating with alternately-arranged different regions, optical semiconductor device with the diffraction grating, and apparatus and optical communication system using the same

CANON KK21 citations92
US5309275AMay 3, 1994

Semiconductor optical amplifying apparatus

CANON KK32 citations92
US6807201B1Oct 19, 2004

Laser with phase controlling region and method for driving the same

CANON KK18 citations84
US6304329B1Oct 16, 2001

Gyro and semiconductor device having a plurality of laser diodes

CANON KK18 citations84
US5862165AJan 19, 1999

Variable wavelength light source using a laser, wavelength control method, optical communication system and optical communication method

CANON KK17 citations84
US6091745AJul 18, 2000

Semiconductor laser capable of changing polarization mode of its output light, semiconductor laser apparatus and driving method therefor

CANON KK13 citations74
US5848085ADec 8, 1998

Semiconductor quantum well structure and semiconductor device using the same

CANON KK6 citations74
US5414549AMay 9, 1995

Semiconductor optical amplifying apparatus

CANON KK7 citations74
US5309268AMay 3, 1994

Optical communication system and optical communication method

CANON KK12 citations74
US5224114AJun 29, 1993

Semiconductor laser devices with a plurality of light emitting layers having different bands gaps and methods for driving the same

CANON KK10 citations74
US5157544AOct 20, 1992

Waveguide optical element and its driving method

CANON KK14 citations74
US5223972AJun 29, 1993

Optical amplifiers, optical communication systems networks using the amplifier and integrated optical nodes including the amplifier

CANON KK18 citations73
US5809047ASep 15, 1998

Method for driving a wavelength changeable light source apparatus, such a wavelength changeable light source apparatus and an optical communication system using the same

CANON KK2 citations63
US5440581AAug 8, 1995

Semiconductor optical filter and an optical communication system using the same

CANON KK5 citations63

TOYAMA CHEMICAL CO LTD

6 patents

HITACHI LTD

4 patents

NIPPON STEEL & SUMITOMO METAL CORP

4 patents

HOLON CO LTD

2 patents

JAPAN DISPLAY INC

2 patents

NITTA KAZUFUKU

1 patent

MAGNOLIA WHITE CORP

1 patent

TOYAMA CHEMICAL COMPANY LIMITE

1 patent

UENISHI AKIHIRO

1 patent

Showing the top 50 of 54 patents by PatentIndex Score.