色散平坦 的英文怎麼說
中文拼音 [shǎisǎnpíngtǎn]
色散平坦
英文
df dispersion flattened-
It is more suitable for the broader sc spectrum generation when the dispersion curve of the fiber is flatter and distance between the two zero - dispersion wavelengths of the fiber is farther from each other
光纖的色散曲線越平坦，色散曲線的兩個零色散波長相距就越遠，也越有利於超連續譜的展寬。The general nonlinear propagation equations of four - lightwaves in birefringent fibers are deduced. the characteristics of polarization mode dispersion in 4 + 10gb / sdwdm system in dispersion - flattened fibers is studied. our results show that pmd exerts a detrimental influence on 4 x logb / sdwdm system in limiting transmission rate and the channel numbers
本論文研究波分復用（ wdm ）系統中偏振模色散的影響，主要工作包括下面兩個部分：一、導出了四波長光波在雙折射光纖中傳輸所滿足的一般非線性耦合方程；在此基礎上，研究色散平坦光纖中4 10gb sdwdm系統的偏振模色散特性，並且進一步研究了偏振模色散對不同通道間隔的4 10gb sdwdm系統的影響。It is found that flat and wideband sc ca n ' t be obtained in common dispersion - shifted fiber, and dispersion - flattened fiber with small normal gvd is most suitable for flat and wideband sc generation ( 2 ) sc generated in dispersion - flattened / decreasing fiber is studied profoundly
結果表明，利用自相位調制效應在常規色散位移光纖一般不能產生平坦、寬帶的sc譜。具有較小正常色散的色散平坦光纖有利於平坦、寬帶sc譜的形成。 （ 2 ）研究了色散平坦漸減光纖中sc譜的產生。Chapter4 : the sc spectrum generated in the dispersion - flattened and decreasing fiber is theoretically researched
第四章：研究了色散平坦漸減光纖中超連續譜的產生情況。Df dispersion flattened
色散平坦光纖The achievements gained in this thesis are as follows : ( 1 ) sc generation from optical fibers with different gvd is simulated in detail
主要工作內容如下： （ 1 ）研究了不同色散特性的常規色散位移光纖和正常色散平坦光纖中超連續譜產生情況。The flatness and the bandwidth of the sc spectrum are affected by the dispersion characteristic in a sc fiber
色散曲線的特性對超連續譜平坦度及寬度有重要的影響。A flat and broad sc spectrum can be obtained by optimizing the chromatic dispersion design of the sc fiber
通過對色散曲線的優化設計，可以獲得平坦展寬的超連續譜。The results show that the fiber with chromatic dispersion that is a convex function of wavelength in normal dispersion region is favorable for generating a flat sc spectrum
發現在光纖的正常色散區，色散曲線與波長的成凸型函數關系的色散特徵，有利於平坦光纖超連續譜的產生。We propose the joint filterbank precoders and decision feedback equalizers structure at first, by which the dispersive channel is equivallent into parallel independent flat fading subchannels such that the diversity gain of the receiver is increased. then we adopt the discrete - time ( dt ) canonical model to convert the problem of blind signal processing of tv dispersive channels into processing the time - invariant multi - channels model blindly, and discuss the problem of blind equalization and identification of tv dispersive channels based on this new model
第一種是採用濾波器組聯合均衡方法將色散通道等價為一組獨立的平坦衰落子通道，以提高接收機的分集增益；另外一種是提出採用離散正則模型將時變色散通道的盲信號處理轉化為時不變多通道模型的盲信號處理，並針對該模型對時變色散通道的盲均衡與盲辨識方法進行了詳細討論。Study on a new type high birefringence and flattened dispersion photonic crystal fiber
新型高雙折射及色散平坦光子晶體光纖研究A new terahertz source of folded waveguide traveling - wave - tube which based on vacuum electronics is introduced, which may answer the question for scarcity of small, economical terahertz source with continuous wave of high average power. secondly, transmission characteristics of terahertz wave in the periodic slow wave circuit of folded waveguide traveling - wave - tube have been researched combined with development of micro - fabrication technology. dispersion relation and interaction impedance of the slow wave circuit are deduced by the way of equivalent circuit, and results accounted by theory are close to those simulated by software
其次，結合計算機模擬技術對這種新型太赫茲輻射源的折疊波導慢波線路傳輸特性進行研究:用等效電路法從理論上推導了慢波電路場、色散關系及線路耦合阻抗，電磁模擬軟體計算得出的慢波電路色散曲線與理論計算所得結果基本上一致，表明這種尺寸的慢波電路在太赫茲頻段有著色散曲線較平坦以及寬帶、低損耗的良好傳輸特性。The results show that the dispersion slope of dispersion - shifted fiber is crucial to sc generation. a flat and ultra - broad - band sc spectrum is obtained by optimizing the fiber parameters and the peak power, pulse width of pump pulse
通過對光纖色散斜率的優化設計並綜合考慮泵浦脈沖功率、脈沖寬度對sc譜譜寬和平坦度的影響，獲得了平坦、超寬的sc譜。分享友人