OPTICAL WAVELENGTH MULTIPLEX TRANSMISSION SYSTEM AND OPTICAL DISPERSION COMPENSATION SYSTEM

Japanese Patent JP3396270

B2

PURPOSE: To make the capacity of an optical communication system large without being influenced by crosstalk by four light wave mixing FWM by arranging optical signals with a specific efficient channel interval.
CONSTITUTION: Signals from respective channels are multiplexed with high density as signal lights whose frequencies are mutually different in a transmission circuit 1, transmitted through an optical fiber 2, separated in a distributor 3 and detected as the signal lights of the corresponding frequencies by reception circuits 4 corresponding to the respective channels. At the time, so as to suppress the crosstalk amount of the respective channels, the dispersion values of the respective channels are calculated, an optimum distance from a zero dispersion wavelength λ0 is obtained and a guard band 5 is set. Thus, by arranging the signal lights of the respective channels from the λ0 of the optical fiber 2 through the guard band 5, the influence of the FWM is suppressed, the influence from the other channels by the crosstalk is suppressed, a band is efficiently utilized and the capacity of the optical communication system is made large.

JP2550898	OPTICAL AMPLIFIER
WO/2011/086696	OPTICAL COMMUNICATION SYSTEM, OPTICAL TRANSMITTER, OPTICAL RECEIVER AND OPTICAL TRANSPONDER
WO/2003/052978	PROTECTED BIDIRECTIONAL WDM NETWORK

Joji Ishikawa
Hiroshi Onaka
Hideyuki Miyata
Motoyoshi Sekiya
Kazue Ohtsuka

JP24256493A

April 14, 2003

September 29, 1993

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富士通株式会社

H04J14/00; G02B6/34; H04B10/2507; H04B10/2525; H04B10/255; H04B10/2563; H04B10/299; H04J14/02; (IPC1-7): H04J14/00; H04B10/02; H04B10/18; H04J14/02

JP5152645A
JP6043929A
JP6218131A
JP4368028A

Yu Sanada

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