輸出色階 的英文怎麼說
中文拼音 [shūchūshǎijiē]
輸出色階
英文
output levels-
3 ) coupled higher - order nonlinear schr ( ? ) dinger equations ( chnlse ), governing the evolution of two orthogonal polarization components of ultrashort optical pulse in birefringent fiber, are derived from the dispersion relation
3 )從色散關系出發,推導了描述超短光脈沖不同偏振分量在雙折射光纖中傳輸特性的耦合高階非線性薛定諤方程( chnlse )與用多重尺度法得到的相同。Using the variational method, analytical conditions for stationary pulse propagation in dense period fibers with strong dispersion management are deduced. the expression of initial soliton peak power is given. by employing the obtained formulas, the soliton evolution semi - analytically in various dispersion maps can be investigated. effects of the third order dispersion are also studied in this paper. the results show that imperfect dispersion slope compensation can cause pulse central position shift and even serious degradation of soliton shape
利用變分方法,推導出了在強色散管理的密集周期光纖中脈沖穩態傳輸的解析條件,並給出了初始脈沖峰值功率的表達式.運用這些公式,對各種色散管理系統中孤子的演化進行了半解析的考察.三階色散也被考慮在內.結果表明:不完善的色散斜率補償將導致脈沖中心位置的偏移甚至嚴重的孤子形狀劣化The following algorithms have been proposed and tested in the thesis : 1 frequency selective fading : combine the isomorphism between the input space and the output space and propose a new approach to blind equalization of the channel. compared with conventional methods, the new approach offers lower computational complexity, better performance, and more robust against the over - determination of the system order ; 2 time selective fading : a new approach to the equalization of time selective channel based on the zero - forced equalizer is proposed which is more simple in its structure of algorithm ; 3 time - varying channel : using the instantaneous mean value changes of the output signal to extract the information of channel variations and model it using ar model, kalman filter is then employed to track channel variations, it bears faster ability in tracking the variation of tv channels ; based on the isomorphism between the inputs and the outputs and some of the approaches using in mimo system, a new algorithm of equalization of simo time - varying channel is proposed, which also share the merits of being robust against the over - determination of the system order ; model the time - varying channel using the multi - resolution decomposition wavelets, and then a blind identification method based " on the model is proposed ; at last, a new model for equalization and identification of mimo system is proposed
主要工作在以下幾個方面: 1 、針對頻率選擇性衰落通道:結合輸入輸出空間同構關系提出一種新的頻率選擇性通道均衡方法,與傳統方法相比,該方法計算量更小,收斂速度更快,性能更優,且對系統階次的過確定表現穩健,具有實際均衡應用價值; 2 、針對時間選擇性衰落通道:提出一種基於迫零均衡的時間選擇性通道均衡方法,演算法結構簡單; 3 、針對時變色散通道:利用瞬態均值曲線提取通道時變信息,對之ar建模,利用卡爾曼濾波器跟蹤時變通道抽頭變化,可以快速跟蹤通道變化;基於輸入輸出空間之間的同構關系以及多輸入多輸出系統的處理方法,提出了新的單輸入多輸出色散時變通道均衡與識別演算法,同樣具有對通道階次過確定保持穩健的優點;結合小波多解析度分析提出一種基於小波模型的通道盲識別演算法;研究時變的多輸入多輸出系統的盲均衡與盲反卷積問題,給出一種時變系統處理模型。Uses this texture stage s first color or alpha argument, unmodified, as the output
使用此紋理階段的第一個顏色參數或alpha參數(不修改)作為輸出。Uses this texture stage s second color or alpha argument, unmodified, as the output
使用此紋理階段的第二個顏色參數或alpha參數(不修改)作為輸出。Output module valve
輸出色階In succession, the theory of chirped - pulse amplifier system is given in detail, firstly, studying from designing experimental light road and optical components to theoretical analysis, we par ' tly finished the system by ourselves. about ultr a - shoft pulse with a pulse - width of 9. 8f s and output power of 650mw and band - width of about l 20nm is output from oscillator source, secondiy, the stretching capacity of single grating four - pass stretcher is measured using abcd matrix combining collins function, and the effect of relativ e parameters to the streching ratio is also simulated. thirdly, a new type of disjunctional frequency moduiating function is provided according to the gain - narrowing and gain - saturation which are appeared in the co urse of amplification, under modulating the two effects are both controlled on some e xtent, fourthiy, the effect of ase that is often ignored by people is analyzed and the resolving methods are also given
從光路、光學元件的自行設計到理論分析計算,初步建立了一臺實驗系統;採用abcd矩陣法結合collins公式計算了四通式單光柵展寬器的展寬量,並模擬了相關參數對展寬比的影響,對實驗具有指導意義;評價了再生放大器和多通放大器的優缺點,對放大過程中通常忽略的放大自發輻射現象( ase )進行了分析,並提出了相應的解決方法;針對放大過程中出現的增益窄化和增益飽和現象,對輸入種子脈沖提出了一種新的分段頻率調制函數,實現了對增益窄化效應和增益飽和效應的共同抑制;提出了系統的材料(包括放大介質和光路中的普通介質)正是融合高階色散的來源。The photography program also maintains excellent hardware facilities for photo students, including darkrooms for both black - and - white and color, darkroom for advanced black - and - white photography, professional photo studio, macintosh computer classroom, and output equipment
攝影組也有完善的硬體設備,像是黑白暗房、彩色暗房、高階黑白暗房、專業攝影棚、麥金塔電腦教室、相紙輸出設備等。We also compared the effects of positive and negative third - order dispersion working with srs. the result shows that the effect of negative third order dispersion working with srs is more suitable for pulse propagation and compression. as a result, we proposed two methods to facilitate the propagation of optical pulse in nolm, and hence provided a theoretic guidance to the better design of eight - figure fiber laser
並且通過比較正、負三階色散分別與拉曼散射效應的相互作用對飛秒脈沖傳輸特性的影響,發現脈沖拉曼散射與負的三階色散相互作用更有利於飛秒脈沖的傳輸與壓縮,從而提出了改善了飛秒光脈沖在環形腔中的傳輸特性的兩種方法,進而為「 8 」字形光纖激光器的優化設計提供了理論指導。Based on the nonlinear schr ? dinger equation used to describe the normalized amplitude evolution in the fiber, the influence of the third - order dispersion on the transmission characteristics of super - gaussian optical pulse with different chirps in the fiber is studied numerically
摘要從光脈沖在光纖中傳播所滿足的非線性薛定諤方程出發,研究了三階色散對具有不同啁啾的超高斯脈沖在光纖中傳輸特性的影響。4. by using the expression for computing the output pulse ' s rms time width in an optical fiber link with up to fourth - order dispersion ( fod ), we present an expression of maximum fiber - link length, at which the output pulses can return to its original rms time width, in an optical fiber link with up to fourth - order dispersion
利用包含四階色散的輸出均方根脈寬的表達式,獲得了線性超高速光時分復用系統在源啁啾和殘餘二階色散的作用下的最佳傳輸參量。在該最佳參量下,可獲得均方根脈寬恢復初始值的最大傳輸距離。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;用奇異攝動多重尺度導數展開法和色散關系推導了耦合高階非線性薛定諤方程( chnlse ) ,並用行波變換法得到了一系列孤波解析解,分析了它們在光纖中傳輸的必要條件,也討論了它們的穩定性,為實現飛秒光脈沖在光纖中的無畸變傳輸作理論上的探索。This is an unprecedented period for minority - language information processing, and all sorts of ime and other software are now available on the market
這一時期是民文處理的輝煌階段,在市場上出現了形形色色的民文輸入法和其它軟體。分享友人