例句與造句

1. In dwdm , the nonlinear effects such as self - phase modulation ( spm ) , cross - phase modulation ( xpm ) become important
   然而多波長的密集傳輸使得光纖中的非線性效應(yīng)(自相位調(diào)制、交叉相位調(diào)制等)顯著增強(qiáng)。
2. We derive an analytic expression of the group velocity dispersion ( gvd ) induced chirp and the self - phase modulation ( spm ) induced chirp in the normal dispersionregion of non - kerr - like optical fibers with saturable nonlinarity . the evolution of chirp is simulated by numerical methods . the studied results show that the more powerful saturable effects , the smaller is chirp and the gently is chirp . the net chirp is zero in the central region of the pulse
   從理論上推導(dǎo)出具有飽和非線性的非克爾光纖正常色散區(qū)內(nèi)，群速度色散效應(yīng)導(dǎo)致的啁啾和自相位調(diào)制效應(yīng)導(dǎo)致的啁啾解析表達(dá)式.利用數(shù)值解法模擬了非克爾光纖正常色散區(qū)啁啾演變過程.研究結(jié)果表明：當(dāng)非克爾光纖的飽和非線性增強(qiáng)時，凈啁啾不斷減小，而且，越來越平緩，脈沖中心附近區(qū)域凈啁啾接近零
3. It's difficult to find self-phase modulation (spm) in a sentence. 用self-phase modulation (spm)造句挺難的