| 摘要 |
PROBLEM TO BE SOLVED: To provide a method and system for optical transmission, capable of reducing four-wave mixing.SOLUTION: In a transmission system according to the present embodiment, a repeat optical amplifier 5 for amplifying a multiplexed optical signal is provided in an optical transmission line 4. The repeat optical amplifier 5 has an optical signal intensity adjustment means for individually adjusting an optical signal intensity at each wavelength. In the optical signal intensity adjustment means, an optical signal intensity is adjusted so that a wavelength interval between optical signals having relatively strong optical signal intensity is wider than a wavelength interval between optical signals having wavelengths adjacent each other. |
