signal dispersion 中文意思是什麼
signal dispersion
解釋
信號頻散學- signal : n 1 信號，暗號；信號器。2 動機，導火線 （for）。3 預兆，徵象。adj 1 暗號的，作信號用的。2 顯著的...
- dispersion : n 1 分散，散開；散布，傳播；離散。2 【物理學】彌散，色散；【化學】分散作用；被分散物；分散相，分...
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Finally, the result manifests that it is necessary that the dispersion of the optical signal in every channel in the wdm system be compensated respectively. by use of the compensator, which is designed here, the dispersion efficiency can obtain very high value
計算結果表明，有針對性對wdm系統中各分波光信號分別進廳色散補償是有必要的，而且用本文中所設計的補償器進行補償，其效率可達到很高。 -
In this article, at first, the dispersion conception and generation reason are explained, and the dispersion influences that are brought about in the analog and digital signal transmission in optical fiber communication are accounted for. next, the dispersion theory of optical fiber is discussed in detail and several useful technologies of dispersion compensation are introduced
論文首先從光纖色散的概念和起因入手，然後從數字和模擬信號傳輸兩個方面，說明了光纖色散對通信的影響，對光纖色散理論作了詳細地闡述和分析，並介紹了幾種已實用的色散補償技術。 -
The results indicate that the soliton amplitude slightly decreases in the border between the single - mode fiber ( smf ) and the dispersion compensation fiber ( dcf ), but and its shape remains unchanged, while its signal amplitude is amplified when it passes an amplifier and its shape automatically restored
研究表明，在普通光纖與色散補償光纖的交界處，孤波的幅度有所降低，但其形狀保持不變；光孤子通過放大器后其幅度得到放大，其形狀將自動得到恢復。 -
Hi accordance with the physical principle of dispersion generation, many kinds of technologies of dispersion compensation have been researched and expounded. for instance, dispersion compensation fiber technology, pre - chirpped technology, dispersion supported transmission technology, chirpped fiber grating technology, and so on. but the study of dispersion compensation technology in which the dispersion of the optical signal in every channel in the wdm system is compensated respectively is reported rarely
針對色散的物理機理，人們研究並提出了各種色散補償技術，如色散補償光纖法、預啁啾法、色散支持傳輸法和啁啾光纖光柵法等，而對波分復用系統中各分波光信號分別進行有針對性的色散補償的研究報導還很少。 -
In this paper, on the basis of increasingly mature fabrication technologies of planar integrated waveguide and the optical fiber grating, we make use of not only the ( de ) multiplexing and wavelength router characteristic of arrayed waveguide grating ( awg ), but also the dispersion peculiarity of uniform fiber bragg grating ( ufbg ). then a kind of dispersion compensator, which can compensate the dispersion of the optic signal in every channel in the wdm system respectively, is devised. the method makes the compensation efficiency maximum theoretically
本文結合近幾年來日益成熟起來的平面集成波導製作工藝和光纖光柵製作技術，利用陣列波導光柵（ awg ）的復用特性和波長路由選擇特性與均勻光纖光柵（ ufbg ）的色散特性，提出了一種能對wdm系統中各分波光信號分別進行有針對性色散補償的補償器件，該器件使wdm系統中各分波光信號所得到的色散補償在理論上達到很高效率。 -
In the picosecond and femtosecond time field, the durations of the pump and signal pulses are so short that special propagating characteristics of ultrashort pulse laser should be taken into account, especially the pulse broadening induced by the group velocity mismatch and the group velocity dispersion
在皮秒和飛秒時域，由於泵浦光與產生的信號光的持續時間特別短，故在討論超短脈沖與物質相互作用時必須計及超短脈沖在介質中傳輸的特殊性質，尤其是群速失配與群速色散引起的脈沖展寬。 -
Firstly, the multiple modes and dispersion nature of ultrasonic lamb wave are investigated in theory. furthermore, optimization of excitation signal is performed experimentally with the four parameters : the transport mode, the center frequency, the amplitude and the number of the wave ’ s peak value
本文首先從理論上分析lamb波的多模式和頻散現象，在理論基礎上結合實驗在傳播模式、中心頻率、信號幅值、波峰數等幾個方面對lamb波進行優化。 -
Finally, some important conclusions were drawn, that is, using distributed pzt transducers, ultrasonic guided waves are generated and received in a pipe. usually, there are many different modes of guided wave propagating in the pipe and these modes are generally dispersive, the specific exciting signal of a harming windowed toneburst with a central frequency of 70khz for decreasing the effect of dispersion was selected. and guided wave are generated using 16 distributed pzt transducers in a circumferential direction for suppressing flexural modes
首先，對當前本課題研究領域的進展作出綜述，並簡要介紹與超聲導波技術相關的理論基礎；其次，建立了一套有效的實驗裝置，在此實驗裝置基礎上，重點研究了採用分散式pzt傳感器在管中激勵和接收特定模態超聲導波的方法：根據在管狀波導中傳播的超聲波具有頻散現象及多模態特徵，選擇具有單一頻率的特定信號激勵超聲導波，使其頻散最小；同時採用分散式傳感器抑制不同模態的波型。 -
The linear theory of the coaxial disk - loaded cylindrical waveguide twt is built and the dispersion equation with an annular electron beam of this twt is obtained according to self - consistent field theory and the field matching method. the computation results of the hot dispersion equation indicate the relations between the electron beam parameters and the small signal gain
利用自洽場理論以及場的匹配方法，推導出此結構在小信號條件下的熱色散方程，討論了電子注參量和慢波系統幾何參量與小信號增益和色散的關系。 -
By a large amount of calculations, the influence of the structure dimensions and the dielectric parameters on dispersion characteristic and coupling impedance of this kind of slow - wave structure is obtained. then, the linear beam - wave interaction theories of the arbitrarily - shaped helical groove waveguide and the dielectric into the arbitrarily - shaped helical groove waveguide are deduced. by the numerical calculations, the relationship is got between the small signal gain, bandwidth, electromagnetic " hot " velocity and the electronic beam, the structural parameters
通過數值計算，獲得了此類慢波結構的色散特性和耦合阻抗隨結構幾何尺寸和介質參數的變化規律;在此基礎上，建立了任意槽形螺旋槽及中心加介質棒的任意槽形螺旋槽行波管的注-波互作用線性理論，並編製程序，計算了管子的小信號增益、帶寬、電磁慢波的「熱」相速與電子注參數、結構參數之間的關系，獲得了增加帶寬或增益的途徑。 -
The influence of various electron beam parameters on the small signal gain is investigated and discussed by the numerical results. 5. the model of the coaxial disk - loaded cylindrical waveguide is manufactured to testify the dispersion properties of this structure
五、加工了同軸膜片加載圓波導慢波系統實驗模型，用諧振法測得的色散特性與理論數據良好吻合，從而驗證了同軸膜片加載圓波導慢波系統色散特性理論分析的正確性。 -
Then, after the structure and characteristic of awg is described in brief, we put emphasis on the deduce of the dispersion equation of ufbgs in the vicinity of its reflection band gap ( rbg ) in light of coupling theory. in terms of this equation, the dispersion compensation of the optical signal in every channel in the wdm system, which has eight channels, is calculated and analyzed theoretically. during the course, some important parameters of ufbgs in the compensator are computed
在簡要敘述了陣列波導光柵的結構及其特性后，著重從光纖光柵耦合波理論導出了均勻光纖光柵在反射帶隙（ rbg ）外附近的色散特性方程，並根據這一特性方程，對8通路的wdm系統中各分亡巴八碩士學位論文tinv坯1 ： e 』 sthe狠波光信號的色散補償進行了數值計算與分析，由此確定補償器中各均勻光纖光柵的相關參數。 -
Research on effects of dispersion of signal transmission on millimeter - wave rof optical communication systems
光通信系統中信號傳輸色散影響的研究 -
It includes driving circuits, signal processing and displaying circuits of ccd. in the system designing ， the plane reflect grating is adopted to dispersion light. it can decrease losing of light energy
在系統設計中，採用了平面反射光柵作為色散的元件，減少了光能的損失，並對組成光路部分的元器件進行了優化選擇。
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