1) Fourth Order Dispersion(FOD)
四阶色散(FOD)
2) Fourth-order dispersion
四阶色散
1.
While considering the fourth-order dispersion and the quintic nonlinearity of optical fibers with losses,we investigate the Cross-Phase Modulation(XPM) instability caused by two beams of lights on the basis of the extended nonlinear Schrdinger equation.
在同时考虑四阶色散和五阶非线性的情况下,以扩展的非线性薛定谔方程为基础,研究了有损光纤中双光束交叉相位调制(XPM)不稳定性。
2.
The results show that because of fourth-order dispersion,when only a single optical wave transmits in fiber,a new MI spectrum region occurs in the anomalous dispersion region.
结果表明:由于四阶色散的影响,单光束传输时,在光纤的反常色散区出现一个新的调制不稳定频谱区;双光束传输时,在普通光纤和色散缓变光纤(DDF)的正常和反常色散区,XPM不稳定均发生在两个频谱区。
3.
For two beams of input lights dispreading in opposite direction,the effect of third-order and fourth-order dispersion on cross-phase modulational instability based on extended nonlinear Schr dinger equation is investigated.
对在光纤中反向传输的两束光,以包含了三、四阶色散项的耦合非线性薛定谔方程为基础,主要研究高阶色散对交叉相位调制不稳定性的影响。
3) the fourth order dispersive terms
四阶色散项
1.
The authors obtain the solution of a solitary wave for the Boussinesq type equations, which retain the first order nonlinear terms and the fourth order dispersive terms.
对作者得到的保留了一阶非线性项O(α)及四阶色散项O(β8)(其中:α=A/h0,β=h0/L;A特征波高,L特征波长,h0特征水深)的Boussi-nesq类方程求解其孤立波解,与传统Boussinesq方程的孤立波解进行了比较,为数值求解一阶非线性、四阶色散性方程提供了精确的初始条件。
4) high order dispersion
高阶色散
1.
The influence of high order dispersion to femesecond solitons;
高阶色散对光孤子传输的影响
2.
It has been shown from simulation that the linear initial chirp of optical pulse can compensate first order dispersion to some extent, but it increases the distortion effects of the high order dispersion on the transmitting optical pulse.
文中从理论上分析了光脉冲的初始啁啾与单模光纤的色散效应的关系 ,并用数值仿真的方法验证了分析的结果 :线性初始啁啾可以在一定程度上补偿一阶色散 ,但却加大了高阶色散对传输光脉冲的负面影
3.
A more comprehensive theoretical model to deal with the pulsed beam through grating pair is obtained and used to study the spatial and temporal properties of the pulsed Gaussian beam single and double passing compressor and the effects of high order dispersion.
并据此分析了脉冲高斯光束单次及两次通过光栅对时的变换特性,以及高阶色散对脉冲压缩的影响。
5) higher-order dispersion
高阶色散
1.
First,we discussed under the influence of the higher-order dispersion,femtosecond pulse based on cross-phase modulation,produced pulse pair no longer maintain symmetry,but generated a blue shift.
首先讨论了在高阶色散影响下,飞秒脉冲基于交叉相位作用,弱脉冲产生的压缩脉冲对不再保持对称不变,产生蓝移。
2.
By numerical calculation,the influence of higher-order dispersion and the fifth-order nonlinearity on the propagation properties of optical soliton-like pulses .
从修正的非线性薛定谔方程(MNLSE)出发,采用变分法,导出了在高阶色散和五阶非线性共同作用下类明孤子脉冲参数随传输距离的演化方程组;求出了振幅与脉宽、脉宽与啁啾之间的约束关系及脉宽随传输距离演化的解析解;分析讨论了光纤中高阶色散和五阶非线性共同作用对类明孤子传输特性的影响。
3.
In this paper the solution to the NLS equation including higher-order dispersion and two-photon absorption, the solution for the influence of soliton propagation,as well as higher--order dispersion and two-photon absorption in the fiber amplifiers is discussed in detail.
本文求解了含高阶色散和双光子吸收效应的NLS方程,由此孤子解讨论了高阶色散和双光子吸收效应对光纤放大器中孤子传输的影响。
6) high-order dispersion
高阶色散
1.
Modulation instability gain spectrum varying with the incident optical power in case of high-order dispersion;
高阶色散下随入纤功率变化的不稳定性增益谱
2.
Numerical research of the high-order dispersion effect on femtosecond optical pulses propagation properties;
光纤通信中高阶色散对飞秒光脉冲传输影响的数值研究
3.
The evolution equations for the parameters of Gaussian pulse with propagation distance in optical fibers is derived,considering high-order dispersion and the fifth-order nonlinearity by means of variational method from the modified nonlinear Schrdinger(MNLS)equation.
从修正的非线性薛定谔方程出发,采用变分法,导出了在高阶色散和五阶非线性共同作用情况下高斯型脉冲参量随传输距离的演化方程组;求出了振幅与脉宽、频率与啁啾、脉宽与啁啾之间的三个重要约束关系;并进一步得出了脉宽随传输距离演化的解析解和脉冲中心位置随传输距离的演化规律;描绘了高阶色散和五阶非线性下,脉宽随传输距离演化的图形。
补充资料:七阶──藏教七阶
【七阶──藏教七阶】
﹝出天台四教仪集注﹞
藏教者,即小乘经律论三藏教也。阶者,阶级次第也。谓藏教菩萨修行之次第也。(菩萨,梵语具云菩提萨埵,华言觉有情。)
[一、四弘誓愿],弘者,大也。誓者,要制其心也。愿者,志求满足也。谓菩萨从初发心,观四谛境,发四弘誓,一、未度者令度,即众生无边誓愿度,此观苦谛境。二、未解者令解,即烦恼无数誓愿断,此观集谛境。三、未安者令安,即法门无量誓愿学,此观道谛境。四、未得涅槃者令得涅槃,即佛道无上誓愿成,此观灭谛境也。(梵语涅槃,华言灭度。)
[二、三祇修六度],三祇者,三阿僧祇劫也。六度者,布施、持戒、忍辱、精进、禅定、智慧也。度,越也,越生死流,到涅槃岸也。谓菩萨既发心已,必须行六度行,填满本愿,是为三祇修六度。(梵语阿僧祇劫,华言无数时。)
[三、百劫种相好],劫,梵语具云劫波,华言分别时节。百劫种相好者,一增一减为一小劫;凡历二十番增减,为一中劫;八十番增减,为一大劫。谓菩萨于百劫中,种诸相好。用百福德成一相好,如是至三十二相具足,而身清净也。(人寿从十岁增至八万四千岁,名增劫。从八万四千岁减至十岁,名减劫。如是一增一减,名一小劫。三十二相者,足下安平相,千辐轮相,手指纤长相,手足柔软相,手足缦网相,足跟满足相,足趺高好相,端如鹿王相,手过膝相,马阴藏相,身纵广相,毛孔生青色相,身毛上靡相,身金色相,身光面各一丈相,皮肤细滑相,七处平满相,两腋满相,身如师子相,身端直相,肩圆满相,四十齿相,齿白齐密相,四牙白净相,颊车如师子相,咽中津液得上味相,广长舌相,梵音深远相,眼色如金精相,眼睫如牛王相,眉间白毫相,顶肉髻成相也。)
[四、六度相满],六度相满者,谓菩萨修行六度之相圆满也。如尸毗王代鸽,即檀度满也。普明王舍国,即戒度满也。羼提仙人被歌利王割截身体,慈忍不动,血变为乳,即忍度满也。大施太子抒海,即精进度满也。尚阇黎鹊巢顶上,即禅度满也。劬嫔大臣分阎浮提为七分,城邑山川均等,故能息诤,即智度满也。如上六人,皆释迦往昔所修之行,是为六度相满。(梵语尸毗,华言与。代鸽者,遍割身肉与鹰以代鸽命,身肉俱尽,不恼不死,自誓真实,感身平复也。梵语羼提,华言忍辱。梵语歌利,华言恶世无道。大施太子求如意珠济贫,得珠堕海,抒海取之,言欲酌海干而取之也。筋骨断坏,终不解废,诸天见而问之,答曰:吾生生不休。诸天愍之,助其抒海,海水减半,龙恐海干,令夜叉送珠还之。尚阇黎者,螺髻仙人,名此人得四禅定,出入息断,鸟谓为木,于髻生卵。定起欲行,恐鸟母不来,即更入定,待鸟飞去,方始出定。梵语阎浮提,华言胜金洲。梵语释迦,华言能仁。)
[五、兜率降生],梵语兜率,华言知足。降生者,谓菩萨将补佛处,出世度生,即从兜率天降生人间,以补其处,是为兜率降生。(菩萨即释迦佛也。补佛处者,前佛既灭,而此菩萨即补其处也。)
[六、降神出家],谓菩萨既降神出胎,厌生老病死之苦,而欲脱离,故求出家,入山修道,是为降神出家。
[七、菩提树下成道],梵语菩提,华言道。谓菩萨自知成道时至,于菩提树下,破诸魔众。魔王败绩,鬼兵退散,菩萨安坐不动,即成佛道,是为菩提树下成道。(菩提树者,谓佛于此树下成道,故名菩提树也。)
﹝出天台四教仪集注﹞
藏教者,即小乘经律论三藏教也。阶者,阶级次第也。谓藏教菩萨修行之次第也。(菩萨,梵语具云菩提萨埵,华言觉有情。)
[一、四弘誓愿],弘者,大也。誓者,要制其心也。愿者,志求满足也。谓菩萨从初发心,观四谛境,发四弘誓,一、未度者令度,即众生无边誓愿度,此观苦谛境。二、未解者令解,即烦恼无数誓愿断,此观集谛境。三、未安者令安,即法门无量誓愿学,此观道谛境。四、未得涅槃者令得涅槃,即佛道无上誓愿成,此观灭谛境也。(梵语涅槃,华言灭度。)
[二、三祇修六度],三祇者,三阿僧祇劫也。六度者,布施、持戒、忍辱、精进、禅定、智慧也。度,越也,越生死流,到涅槃岸也。谓菩萨既发心已,必须行六度行,填满本愿,是为三祇修六度。(梵语阿僧祇劫,华言无数时。)
[三、百劫种相好],劫,梵语具云劫波,华言分别时节。百劫种相好者,一增一减为一小劫;凡历二十番增减,为一中劫;八十番增减,为一大劫。谓菩萨于百劫中,种诸相好。用百福德成一相好,如是至三十二相具足,而身清净也。(人寿从十岁增至八万四千岁,名增劫。从八万四千岁减至十岁,名减劫。如是一增一减,名一小劫。三十二相者,足下安平相,千辐轮相,手指纤长相,手足柔软相,手足缦网相,足跟满足相,足趺高好相,端如鹿王相,手过膝相,马阴藏相,身纵广相,毛孔生青色相,身毛上靡相,身金色相,身光面各一丈相,皮肤细滑相,七处平满相,两腋满相,身如师子相,身端直相,肩圆满相,四十齿相,齿白齐密相,四牙白净相,颊车如师子相,咽中津液得上味相,广长舌相,梵音深远相,眼色如金精相,眼睫如牛王相,眉间白毫相,顶肉髻成相也。)
[四、六度相满],六度相满者,谓菩萨修行六度之相圆满也。如尸毗王代鸽,即檀度满也。普明王舍国,即戒度满也。羼提仙人被歌利王割截身体,慈忍不动,血变为乳,即忍度满也。大施太子抒海,即精进度满也。尚阇黎鹊巢顶上,即禅度满也。劬嫔大臣分阎浮提为七分,城邑山川均等,故能息诤,即智度满也。如上六人,皆释迦往昔所修之行,是为六度相满。(梵语尸毗,华言与。代鸽者,遍割身肉与鹰以代鸽命,身肉俱尽,不恼不死,自誓真实,感身平复也。梵语羼提,华言忍辱。梵语歌利,华言恶世无道。大施太子求如意珠济贫,得珠堕海,抒海取之,言欲酌海干而取之也。筋骨断坏,终不解废,诸天见而问之,答曰:吾生生不休。诸天愍之,助其抒海,海水减半,龙恐海干,令夜叉送珠还之。尚阇黎者,螺髻仙人,名此人得四禅定,出入息断,鸟谓为木,于髻生卵。定起欲行,恐鸟母不来,即更入定,待鸟飞去,方始出定。梵语阎浮提,华言胜金洲。梵语释迦,华言能仁。)
[五、兜率降生],梵语兜率,华言知足。降生者,谓菩萨将补佛处,出世度生,即从兜率天降生人间,以补其处,是为兜率降生。(菩萨即释迦佛也。补佛处者,前佛既灭,而此菩萨即补其处也。)
[六、降神出家],谓菩萨既降神出胎,厌生老病死之苦,而欲脱离,故求出家,入山修道,是为降神出家。
[七、菩提树下成道],梵语菩提,华言道。谓菩萨自知成道时至,于菩提树下,破诸魔众。魔王败绩,鬼兵退散,菩萨安坐不动,即成佛道,是为菩提树下成道。(菩提树者,谓佛于此树下成道,故名菩提树也。)
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
参考词条