optical grating 中文意思是什麼
optical grating
解釋
光柵-
The application of optical fiber grating fire alarming system sensitive to temperature to oilcan groups
光纖光柵感溫火災報警系統在油罐群中的應用 -
In chapter 4, the spectral characteristics and its application in optical add - drop multiplexer ( oadm ) and in multi - channel dispersion compensator of linearly chirped moir fiber grating are studied. according to the coupled - mode theory and considering the construction features, we derive the couple - mode equations that describe the mode interaction in this kind of grating
首先從耦合模理論出發，結合線性啁啾moir光纖光柵的結構特性，建立了分析線性啁啾moir光纖光柵的耦合模方程，通過數值求解耦合模方程，研究了線性啁啾moir光纖光柵的光譜特性和時延特性。 -
An all - optical network oadm design based on fiber bragg grating
全光網中基於fbg的oadm設計研究 -
It is expected to provide some solid basis and useful designs for the new fiber devices based on fiber grating, thus motivate the development of wdm all - optical network
本文工作為光纖光柵型wdm全光器件的設計與性能研究提供堅實的理論依據，對wdm全光網的發展具有積極的促進與推動作用。 -
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。 -
The relation between resonant wavelengths and film optical parameters of triple - clad long - period fiber grating
金屬包層光纖的包層模式 -
Long period fiber grating ( lpfg ) is a new kind of optical fiber element
摘要長周期光纖光柵是一種新型光纖器件。 -
The main parts are as follows : 1 ) at the base of the fabrication methods, the photosensitivity of optical fiber and the uv laser sources are introduced simply, the diffraction characteristics of phase mask are analyzed to get the distribution of refractive index in fiber grating, referent the paper [ 4 ] ( delivered )
全文概括如下： 1 ）從常用的製作方法出發，簡單介紹了光纖光敏性和成柵光源，重點分析掩模板的衍射場，從而獲得理想情況下光纖光柵的折射率分佈函數，參考已投論文[ 4 ] 。 -
The algorithm, basing on convolution filtering technique and the fringes " gray values max - min distribution, can automatically and accurately carry out space frequency spectra shifting without spectra analysis and spectrogram in the technique of phase method of projected grating for 3 - d object shapes measurement. the new algorithm makes image processing much caster and the technique of object shapes measurement more automated. the phase error caused by filtering and the crossed - optical - axes geometry setup is also discussed
本文採用投影光棚相位法和數字卷積濾波技術：根據柵線的條紋灰度值分佈具有極大極小分佈的特性，提出卷積濾波形貌光學自動檢測的圖像處理方法，有效地實現了頻譜自動移位，從而進一步提高了圖像處理的速度和形貌測量技術的自動化程度；同時對採用兩光學主軸相交，且非遠心投影系統所產生的誤差進行了分析，並提出了修正方法。 -
Aimed at the present status of detecting oil storage fluid, the article advances a method which utilizes the dramatic feature of optical fiber sensor to develop the optical fiber liquid height meter, and to substitute the manual examination means, and supplements the optical fiber liquid overhead alarm equipment, the optical fiber grating temperature sensor, and uses the network technique to build the optical fiber sensing safety supervisory system to realize the intelligent examination of oil - tank area, thereby avoids or decreases occurrence and the risk of accident, and supplies the reliable guarantee for the big - and - middle - sized tank farm safe production
本文針對儲油液位的檢測現狀，提出利用光纖傳感器的特點研製光纖液位計，取代手工檢測的方法，輔以光纖液位高位報警器，光纖溫度傳感器，並應用網路技術構建光纖傳感安全監測系統，實現石油罐區的智能監測，從而避免或減少事故的發生，降低風險，為大中型油庫的安全生產管理提供可靠的保障。本文首先對安全監測系統中的核心硬體? ?光纖液位計的工作原理及特點進行了介紹。 -
The experimental results show that the precision of the optical fiber grating with the condition of common engineering is 2 % and it is the most ascendant than other measure tools
光纖光柵測力環已成功應用於國內某橋系桿換索施工的監測，實踐表明：在一般建築工程環境下，其測量精度可達到2 % ，大大優于其他測量工具。 -
Movable infrared tunable micro filter, 8x8 moems optical switch array and micro electromagnetic actuator used as driver of moems movable device are separately explored in chapter three. firstly, the infrared tunable micro filter is designed according to theory analysis of micro tunable grating
論文用三章的篇幅分別對微型可調諧紅外濾光器、 8 8moems陣列光開關等可動器件及作為moems可動器件驅動源的微型電磁驅動器進行了探索。 -
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。 -
3 ) the new types of photonic devices based on sampled grating : multiple wavelength laser, wavelength multiplexer / demultiplexer, reconfigurable optical add / drop multiplexer, optical fiber sensor, and multiple channels dispersion compensator
3 ）取樣光柵構成的新型光子學器件：多波長激光器、波分復用解復用器、重構型光分插復用器、光纖傳感器及多通道色散補償器在光纖通信中的應用前景。 -
In order to filter out the noise contained in effective optical signal, a new method using the blazed grating to enlarge the angle difference between noise and effective signal, and getting through the iris to get the effective signal was put forward
摘要為了濾除有效光信號中的光噪聲，本文提出了一種利用光柵的閃耀特性將噪聲和有效信號之間的夾角角度差放大，再通過光闌得到有效光信號的方法。 -
Application of virtual grating phase - shifting moir 233 ; fringe method to angle departure evaluation of optical components
用虛光柵移相莫爾條紋法測量光學元件的角度偏差 -
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。 -
The digital phase - locked loop designed by isp, which is adapted to optical grating readout is briefly introduced
用isp設計的適合於光柵檢測裝置的數字鎖相環在第七章作了簡要的介紹。 -
In this paper, measurement principle and development state of optical grating technology are briefly introduced. the advantages and disadvantages of several classical moire fringe division methods are analyzed and compared with each other
本文簡要介紹了光柵檢測裝置在國內外的發展動態及光柵測長的基本原理，對比分析了一些傳統的莫爾條紋細分方法的優、缺點及適用范圍。 -
Optical grating bit shift detection control system, and digital closed - loop servosystem, which controlled by the computer, can communicate mutually, exchange data and transmit control information. overall system can achieve the high accuracy position
光柵位移檢測系統和閉環伺服控制系統，是由微機來控制的，它們可以通訊，以交換數據或是傳遞控制信息，實現高精度的定位
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