透射光柵 的英文怎麼說
中文拼音 [tòushèguāngzhà]
透射光柵
英文
transmission grating-
Now a very interesting time - resolved x - ray spectrometer, in which an transmission grating is coupled with a x - ray streak camera has been a x - ray spectrograph
目前通常採用透射光柵與條紋相機耦合的方式作為x射線譜儀。Characteristcs of the tansmission grating under the brewster angle
布儒斯特角附近的透射光柵傳輸特性The main works and contributions achieved in this dissertation are concluded as follows : 1. based on the scalar diffraction theory, the mathematical model of optical configuration of transmissive grating interferometer is established. it indicats that moir interference fringes is affected by many parameters, such as grating pitch, light wavelength, light beam size and incidence angle, etc. the variation that the width, intensity, orientation and contrast of moir interference fringes along with every parameter is numerically analyzed
主要的研究內容和所取得的成果可歸納如下: 1 .基於標量衍射理論，建立了透射式光柵干涉儀光路的數學模型，分析了透射式光柵干涉儀的莫爾干涉條紋與光柵柵距、光柵開口比、光波波長、光斑尺寸、光束入射角等多個參數的關系。Responsive mechanism of fiber gratings to temperature and axial strain
啁啾的長周期光纖光柵的透射譜特性A switchable and spacing - tunable dual - wavelength linear cavity edfl is demonstrated experimentally using this kind of bragg grating for wavelength selection. it exploits the birefringence characteristic of the fbg induced by transverse strain. transverse strain loading on the fbg allows the wavelength spacing to be controlled while axial strain shifts both wavelengths together
2 .對軸向及側向應力共同作用下的光纖布拉格光柵的透射及反射光譜特性進行了理論及實驗研究，並首次把軸向及側向應力共同作用下的光纖光柵應用於光纖激光器進行波長選擇，得到了室溫下穩定工作的波長及波長間隔可調的可開關雙波長的摻鉺光纖激光器。( 3 ) the bragg - shift phenomenon of transmission holographic grating is investigated in theory and experiment. as a result, the bragg - shift phenomenon will be restrained when the intensity ratio of initial writing beams is one
對透射體全息光柵在讀出過程中的布拉格漂移現象進行了理論和實驗分析，得出在本實驗條件下，當寫入光強比為1 1時可以很好地抑制布拉格漂移現象的發生。A simple way to use a grating to measure the wave of laser
利用透射光柵測激光波長的方法This method has some characters : during recording of the transmissive holograms the holographic grating placed in front of the holographic plate closefittingly is used as a spectroscope. the transmissive wave is served as the object wave and the diffraction wave through the holographic grating or the deflective reflect wave produced by the silicon slice is served as the reference wave, therefore the hologram is named as self - reference image hologram. the recording results are the off - axis holograms and the twin images can be separated successfully
在記錄透射型全息圖時，將全息光柵緊貼置於記錄干板之前，而光柵起到了分光的作用，直透波作為全息圖的物光波，參考光是物光通過光柵后產生的衍射波；記錄反射型全息圖時將矽片置於記錄干板之後，利用反射矽片產生離軸參考光，因此系統僅需一束照明光束，參考光來自物光本身，因此稱之為自參考像全息圖。3. the coupled - mode theory and matrix theory of lpfg have been studied. based on the erbium - doped fiber which has been chosen for edsfs, smf - 28 of corning corporation and photosensitive fiber of coractive corporation, the optimum fiber grating period, length, the maximum cross transmission wavelength and the relation
3 .推導長周期光纖光柵耦合模理論及矩陣理論，結合幾種不同的光纖，包括課題中的摻鉺光纖、 corning公司的smf - 28單模光纖及加拿大coractive公司的光敏光纖，利用matlab7建模並結合已確定的長周期光纖光柵的透射譜來優化長周期光纖光柵周期、長度、諧振波長等幾個參數及它們之間的關系，用來指導和優化光纖光柵的製作。( 3 ). the flattening arithmetic of an edfa was presented based on the inter - correlative function between the gain spectrum function of the edfa and that of the reserve transmission spectrum of the lpfg. for optimal matching between the two spectra, the flattening arithmetic calculates the variation of the resonant amplitude and wavelength of the lpfg
Iii .提出了一種動態增益均衡的平坦演算法，這種演算法的本質就是利用摻鉺光纖放大器增益譜函數和新型長周期光纖光柵的透射譜反轉譜函數的相關性，給出新型長周期光纖光柵諧振峰幅度和位置的調節量，使改變后的新型長周期光纖光柵的反轉譜線能和edfa的增益輸出譜線進行最佳匹配。Numerical calculation for the transmission spectrum of a novel long period fiber grating
一種新型長周期光纖光柵透射譜的數值計算I also carried some research on the bragg grating composed by alternate left - handed material and right - handed material. in the reflective spectrum of the bragg grating, there exists bragg top zone ( with reflectance almost 100 % ). however, i found that there exists some narrow transmission bands located in the bragg zone under some conditions
另外，這篇論文里還要講到正負交替的材料組成的布拉格光柵也有很反常的現象，在光柵的反射譜上，我們不僅可以觀察到和傳統布拉格光柵相類似的布拉格平頂區，我們還可以看到在一定條件下，布拉格平頂區中會有一個很窄的反常透射區，也就是說只有很窄區域的波長可以透過光柵，而且中心波長是100 %透過。The sources of error in the experiment of measuring wavelength and grating constant with diffraction grating are analysed. the improving method and theory base are also provided
摘要分析了用透射光柵測波長和光柵常量的實驗中，某些因素對測量結果精確度的影響，並提出了提高測量精確度的方法和依據。It has broad application prospect in the following fields such as microelectronics, photoelectronic devices, large screen flat panel display, field emitter array, acoustic surface wave device, photon crystal, light waveguide array, holographic honeycomb lens and micro - optical element array, micro - structure manufacture, fabrication of large area grating and grid of high resolution, photoresist performance testing, profile measurement and metrology, etc. the paper only involves the primary research of interferometric lithography
在微電子、光電子器件、大屏幕平板顯示器、場發射器陣列、表面聲波器件、光子晶體、光波導陣列、全息透鏡和微光學元件陣列、微結構製造，高分辨、大面積光柵和網格製造，在抗蝕劑性能測試、面形測量和計量等領域，干涉光刻技術都具有廣闊的應用前景。The dissertation focuses on the yb3 + - doped double clad fiber laser. the research works in detail are shown as follows : 1. with the phase - mask method, we make a fiber bragg grating in a few - mode fiber whose cut wavelength is greater than 1060nm
本論文圍繞著摻yb3 +雙包層光纖激光器進行研究工作，報告了得到的科研成果，包括以下的內容: 1 .在截止波長高於1060nm的少量模光纖中用相位掩模法寫入布拉格光纖光柵，製作的布拉格光柵具有幾個透射峰。4. a 8 - cascaded wavelength - division - multiplexed fiber bragg grating sensor system was interrogated by changing voltage acting on a employed tunable fabry - perot filter, and a feedback loop was introduced to make filter track the shifted wavelength of the sensor. at the same time an unbalanced scanning michelson interferometer was introduced to demodulate sensor signal
同時為克服查詢某一光柵時，應變引起波長漂移導致反射波長偏離f - p透過波長，利用一反饋控制裝置，使得濾波器的透過波長自動追蹤查詢光柵的布一拉格波長，利用非平衡掃描michelson干涉儀對傳感信號進行了高解析度的解調。By side - polished, the cladding layer of one side of fiber bragg grating can be reduced to several micrometers. the radiation field can transmit the cladding layer to external medium. when the external refractive index changes, the effective refractive index of fiber changes and the center wavelength of d - shaped fiber bragg grating shifts accordingly
研磨后，光纖布喇格光柵的一側包層減小至幾微米，其輻射場可通過包層透射到被傳感物質，因而被傳感物質的折射率變化可以改變光纖的有效折射率，從而使光柵的布喇格波長產生偏移。This paper also discussed the factors that influenced the diffraction efficiency of scattering object, and proposed the amount of refraction index modulation was very small, the diffraction efficiency was mainly determined by chemical treatment
並指出體積光柵效應對透射全息衍射效率是有貢獻的，討論了影響散射物體全息衍射效率的問題，最後指出在一般情況下，調制折射率是一個很小的量，化學處理對它起著關鍵性的作用。The bragg wavelengths can be simulated by using coupled - mode theory and the results agree on the experiments. theoretical simulations show that the temperature dependant characteristics of few - mode fiber bragg gratings are similar to those of single - mode fiber bragg gratings. that is, each bragg wavelength shifts as a same rule when the temperature varies and the whole spectrum can maintain its profile
理論上的推導還給出了少量模光纖光柵的溫度依賴特性與單模光纖布拉格光柵的溫度依賴性相似，得到的結論為在少量模布拉格光纖光柵均勻受熱時，它的幾個反射峰具有相同的溫度漂移，而且這個透射譜的形狀不因為溫度的改變而改變。The first section includes the theoretical and numerical analysis for diffractive optics elements and the second one gives the results of the fabrication experiments of diffractive optics elements. in the first section, we analyzed the antireflection of the diffraction optics elements. binary optics processing methods may be applied to a glass or silicon substrate to generate an array of small columns in order to enhance transmission
在理論分析的部分，本論文完成的主要工作是用耦合波理論分析了在玻璃或硅基底上製作具有亞波長結構的圓柱形網格陣列以實現對入射光的增透作用，為此而編寫的程序實際上也可以用來分析計算單位周期內具有任意麵形的網格光柵的電磁場衍射特性。分享友人