1
Yasushi Sugaya, Miki Takeda, Susumu Kinoshita, Terumi Chikama: Multi-wavelength light amplifier. Fujitsu, Staas & Halsey, April 25, 2000: US06055092 (64 worldwide citation)

A multi-wavelength light amplifier includes a first-stage light amplifier which has a first light amplifying optical fiber amplifying a light input, a second-stage light amplifier which has a second light amplifying optical fiber amplifying a first light output from the first-stage light amplifier, ...


2
Yasushi Sugaya, Susumu Kinoshita, Hiroshi Onaka, Terumi Chikama: Optical amplifying apparatus. Fujitsu, Helfgott & Karas P C, April 7, 1998: US05737118 (55 worldwide citation)

A computer-controlled optical amplifying apparatus, which includes an optical amplifying unit including an optical amplifying medium and an optical amplifying control unit controlling the optical amplifying unit under the control of a computer. This optical amplifying control unit is constituted by ...


3
Susumu Kinoshita: Optical communication system and optical amplifier. Fujitsu, Staas & Halsey, February 8, 2000: US06023366 (50 worldwide citation)

An optical communication system having a transmitting station for outputting WDM(wavelength-division multiplexing) signal light, an optical fiber transmission line, a receiving station, and an optical repeater including an optical amplifier. The transmitting station includes a supervisory circuit fo ...


4
Susumu Kinoshita: Optical communication system and optical amplifier. Fujitsu, Staas & Halsey, July 10, 2001: US06259553 (47 worldwide citation)

An optical communication system having a transmitting station for outputting WDM (wavelength-division multiplexing) signal light, an optical fiber transmission line, a receiving station, and an optical repeater including an optical amplifier. The transmitting station includes a supervisory circuit f ...


5
Susumu Kinoshita: Method and apparatus for monitoring the momental wavelength of light, and an optical amplifier and an optical communication system which incorporate the method and apparatus to adjust gain tilt. Fujitsu, Staas & Halsey, October 6, 1998: US05818629 (46 worldwide citation)

An apparatus which receives an input light having a spectrum, and determines a momental wavelength of the spectrum. The apparatus includes a decoupling unit, a weighting unit and a computation unit. The decoupling unit decouples a portion of the received input light, to provide a first signal repres ...


6
Yasushi Sugaya, Susumu Kinoshita: Controller which controls a variable optical attenuator to control the power level of a wavelength-multiplexed optical signal when the number of channels are varied. Fujitsu, Staas & Halsey, February 15, 2000: US06025947 (45 worldwide citation)

An optical amplifying apparatus which includes an optical amplifier, an optical attenuator and a controller. The optical amplifier amplifies a light signal having a variable number of channels. The optical attenuator passes the amplified light signal and has a variable light transmissivity. Prior to ...


7
Toshio Maeda, Masahiro Nomura, Katsuya Awano, Susumu Kinoshita, Hiroya Satoh, Koji Murakami, Masaki Tsunoda: N-substituted dioxothiazolidylbenzamide derivatives and process for producing the same. Kyorin Pharmaceutical, Oblon Spivak McClelland Maier & Neustadt P C, September 7, 1999: US05948803 (41 worldwide citation)

The invention provides novel N-substituted dioxothiazolidylbenzamide derivatives that improve the insulin resistance and have potent hypoglycemic effect and lipid-lowering effect, and the process for preparing them, and relates to N-substituted dioxothiazolidylbenzamide derivatives characterized by ...


8
Miki Onaka, Tomoto Tanaka, Etsuko Hayashi, Yasushi Sugaya, Susumu Kinoshita: Optical amplifier for wide band raman amplification of wavelength division multiplexed (WDM) signal lights. Fujitsu, Staas & Halsey, January 21, 2003: US06510000 (39 worldwide citation)

A Raman amplifier providing a wideband gain for use in a wavelength division multiplexing (WDM) optical communication system. In one embodiment, a first optical amplifier Raman amplifies a wavelength division multiplexed signal light in both a first wavelength band and a second wavelength band in ac ...


9
Susumu Kinoshita: Optical fiber amplifier and dispersion compensating fiber module for optical fiber amplifier. Fujitsu, Rosenman & Colin, January 29, 2002: US06342965 (34 worldwide citation)

The invention provides an optical fiber amplifier which assures stable operation of a pump light source and efficiently makes use of residual pump power to achieve improvement in conversion efficiency. The optical fiber amplifier includes a rare earth doped fiber. Pump light from a pump light source ...


10
Miki Onaka, Susumu Kinoshita: Slope control of gain wavelength of raman amplification. Fujitsu, Staas & Halsey, August 31, 2004: US06785042 (32 worldwide citation)

The present invention aims at providing a method for controlling wavelength characteristics of optical transmission powers by Raman amplification, in which the wavelength characteristics of optical transmission powers are automatically compensated without giving any losses to channel lights to there ...