Title:
OPTICAL WAVELENGTH MULTIPLEXED TRANSMISSION SYSTEM AND METHOD FOR IMPROVING SNR
Document Type and Number:
Japanese Patent JP2002135210
Kind Code:
A
Abstract:
To enhance transmission quality furthermore, while employing an optical phase conjugation unit by preventing the SNR of output light from the optical phase conjugation unit from deteriorating.
In the optical wavelength multiplex transmission system, arranged to compensate for nonlinear optical effects occurring in a transmission optical signal using an optical phase conjugation unit, with a wavelength λp of the excitation light of the optical phase conjugation unit is set at a position shifted by Δλ' (λ'≠0), from a state where the wavelengths λ1-λ4 of the transmission optical signal and the λp are arranged at a constant interval Δλ.
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Inventors:
KITAJIMA MOTOTAKA
Application Number:
JP2000329261A
Publication Date:
May 10, 2002
Filing Date:
October 27, 2000
Export Citation:
Assignee:
TOSHIBA CORP
International Classes:
G02F1/35; H04B10/2507; H04B10/2543; H04J14/00; H04J14/02; (IPC1-7): H04B10/02; G02F1/35; H04B10/18; H04J14/00; H04J14/02
Attorney, Agent or Firm:
Takehiko Suzue (6 outside)
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