| 摘要 |
In an optical transmission system, optical wavelength division multiplexed signals are transmitted via an optical fiber, wherein the signal-to-noise ratio of the optical transmission system is improved by setting the power levels of the optical WDM signals at the start of the optical fiber such that the optical WDM signals in the optical fiber have at least approximately the same minimum power levels, thus leading to the signal-to-noise ratios of the output of the optical transmission path being approximately the same. |
