The results also show unequal amplitude method can reduce the interaction between femtosecond soliton in the presence of optical source chirp in a certain degree 研究結(jié)果還表明,不等幅傳輸法在一定程度上可有效地抑制源啁啾飛秒孤子間的相互作用。
The fourth order dispersion is compensated by combination of the effects of proper source chirping and negative residual second - order dispersion . the interesting fact is that the optical pulses can 與零平均二階色散情況相比較,加入殘余二階色散不僅可以在一定程度上延長(zhǎng)傳輸距離,還可以增加系統(tǒng)的穩(wěn)定性。
By introducing the principle of high - speed optical time division multiplexing system , we present the characteristics of higher - order dispersion compensation in ultra high - speed otdm system , and derive optimum transmission parameters under the effects of source chirping and residual second - order dispersion , which would be helpful to provide some theoretical suggestion for high - bit - rate optical transmission system 本文從介紹高速光時(shí)分復(fù)用系統(tǒng)的原理入手,深入地研究了超高速光時(shí)分復(fù)用系統(tǒng)中色散補(bǔ)償?shù)奶匦裕⒃诖嘶A(chǔ)上得到了線性系統(tǒng)在源啁啾和殘余二階色散的作用下的最佳傳輸參量。
Finally , we introduce the influence of optical source chirp on the interaction of femtosecond bright solitons and investigate the influence of optical source chirp on the interaction of femtosecond dark solitons . the results show that optical source chirp can increase the interaction between femtosecond bright solitons and affect the femtosecond dark solitons seriously 最后,我們介紹了源啁啾對(duì)飛秒亮孤子相互作用的影響,同時(shí)也考察了源啁啾對(duì)飛秒暗孤子相互作用的影響,結(jié)果表明,源啁啾會(huì)增大飛秒亮孤子間的相互作用,而對(duì)于飛秒暗孤子,其影響則相當(dāng)劇烈。
The main results are as follows : 1 ) the influence of optical source chirp on femtosecond soliton interaction is studied numerically . results show that femtosecond soliton interaction with chirp from optical source is more serious than that without optical source chirp . the former can cause larger error code rate in soliton communication systems 其主要結(jié)果如下: 1 )對(duì)源啁啾飛秒孤子間的相互作用進(jìn)行了數(shù)值研究,結(jié)果表明源啁啾飛秒孤子間的相互作用比源啁啾皮秒孤子間更加嚴(yán)重,會(huì)在通信系統(tǒng)中造成更大的誤碼率。
The influence of optical source chirp on femtosecond soliton interaction is studied numerically , and the unequal amplitude method can reduce the interaction . in addition high - order coupled equations governing the evolution of two orthogonal polarization components of the same wave are derived by using multi - dimension derivation expansion method of singular perturbation theory and the dispersion relation . furthermore , a class of optical solitary wave solutions , such as the bright - bright , dark - dark , bright - dark , and combined solitary waves are found under certain parametric conditions 數(shù)值研究了源啁啾飛秒孤子間相互作用,提出了抑制該作用的可能方案;用奇異攝動(dòng)多重尺度導(dǎo)數(shù)展開法和色散關(guān)系推導(dǎo)了耦合高階非線性薛定諤方程( chnlse ) ,并用行波變換法得到了一系列孤波解析解,分析了它們?cè)诠饫w中傳輸?shù)谋匾獥l件,也討論了它們的穩(wěn)定性,為實(shí)現(xiàn)飛秒光脈沖在光纖中的無畸變傳輸作理論上的探索。