源光柵 的英文怎麼說
中文拼音 [yuánguāngzhà]
源光柵
英文
source raster-
3. passive and active time - domain demodulation schemes were demonstrated based on a fiber bragg grating used as a tunable filter controlled by a piezoelectric stack, which was driven by an electrical sine wave signal. the measured strain applied on the sensor axially could be judged by observing the interval of the output between notches within a driving period in time - domain
利用匹配濾波技術,分別採用無源和有源方式,藉助受pzt驅動的解調光柵,將待測應變信息變為時序負脈沖間隔的變化,利用常規的示波器觀測同一掃描周期中兩負脈沖在時域中間隔的變化來確定待測應變的變化。The light guiding unit on the surface is composed of sub - micron gratings whose transmission wavelengths are red, green and blue in order. the light source are red 、 green 、 blue led or semiconductor laser array. to enhance the light utilization, the surfaces of light guide plate except the incident and transmitted surfaces are coated with metallic film
本文設計的亞微米光柵型導光板為矩形狀的,導光板上表面的導光單元是由三套出射光主波長分別是紅光632 . 8nm ,綠光521nm ,藍光441 . 6nm的亞微米光柵組成,光源採用的是紅、綠、藍三色發光二級管或者半導體激光器陣列,為了提高光能利用率,除入光面和出光面外,導光板其餘面都鍍上金屬膜。Due to temperature performance of fbg, a reference fbg is adopted to compensate temperature and the compensation principle is expounded. moreover, this scheme not only realizes temperature compensation but also reduces repeatability error of ffptf and errors from power fluctuation of light source, noise of pd and noise of electro - circuit. in the end, temperature and strain performance of fbg is tested and
基於光纖光柵的溫度響應特性,提出用一個參考光柵來進行光纖光柵傳感陣列溫度補償的設計方案,並論述了其補償原理,證明了該方法的可行性;同時可以看出,該方法不僅可以實現溫度補償,也可以減小光纖f - p可調諧濾波器的重復性誤差以及光源功率波動、探測器噪聲和電路噪聲等引起的誤差。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 ] 。Abstract : the error source of raster indicator verification instrument is analized. the synthetic standard uncertainty and expansion uncertainty of the standard unit is determined. the reliable basis for the verification of indicating type measuring tool is provided
文摘:分析了光柵式指示表檢定儀標準裝置的誤差來源,確定了該標準裝置的合成標準不確定度及擴展不確定度,為指示表類量具的檢定提供了可靠性依據。Fiber bragg grating ( fbg ) sensor is a wavelength - encode sensor. it has many unique characteristics, for example it can be immune from light source disturbance and system loss, now it is one of the current heat research fields in the optical fiber sensing fields
布拉格光纖光柵( fbg )傳感器屬于波長調制型光纖傳感器,具有不受光源功率波動和系統損耗等獨特的優點,成為目前光纖傳感領域的研究熱點之一。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。Fiber gratings have several distinguished advantages, such as compare with fiber, low loss and high responsibility. as sensing element, they encode the sensing information in a wavelength form, which are their distinguished advantages over other transducers. that not only make the sensing information does not depend on loss of the system or fluctuation of then source power but also decrease the cost of sensing system and realize multipoint and distributed sensing
光纖光柵與光纖之間存在天然的兼容性,它不僅具有易與光纖連接、低損耗、光譜特性好、可靠性高等特點,而且作為傳感元件,它具有其它傳感器無可比擬的優點,即感應的信息用波長編碼,而波長這個絕對參量不受光源功率的波動、連接或耦合損耗的影響。Based on the character of the eof gain at 1550 nm, a laser diode ( ld ) worked at 980 nm and acted as the pumping source, a eof employed as gain medium, and a fiber grating used as reflector, an ring - cavity all - fiber laser worked at 1562. 5 nm was demonstrated with an output power of 2. 0 mw and a bandwidth of 0
本文主要基於摻鉺光纖在1550nm波段的增益特性,利用帶尾纖的980nm半導體激光器作為泵浦源,鉺光纖作為增益介質,布拉格光纖光柵作為諧振腔反射鏡,實現了波長為1562 . 5nm的環形腔光纖激光器,得到了2mw的激光輸出。As a sensor, fbg can be immune from light source disturbance and system loss by transforming sensing information into its reflecting wavelength shift
作為傳感元件,光纖光柵將被感測信息轉化為其反射波長的移動,即波長編碼,因而不受光源功率波動和系統損耗的影響。Fiber gratings are attracting considerable interests in applications
光纖光柵( fibergrating )是一種新型的光無源器件。Fiber bragg grating ( fbg ) is an optical fiber passive device and develops quickly in the last decade
光纖光柵是近幾年發展最為迅速的光纖無源器件之一。In this paper we demonstrated a new field - controllable liquid - crystal phase grating which to used in orientation detecting and automatic tracking and aiming in space communication
本文提出了利用一種新的液晶器件對空間光通信中對激光源進行方位探測和自動跟瞄,即液晶電控光柵。Plane diffraction grating, logarithmic amplifier and stable constant - current source are used in the system, thus the performance of the instrument is enhanced significantly and the cost is reduced
系統採用了平面衍射光柵、專用陣列探測器、對數放大器以及高穩定恆流源,有效地提高了儀器的整體性能,同時降低了生化分析儀的成本。Ideas about applications of lpfg to band - pass filters, optical add / drop multiplexing, optical fiber sources, coupling of fibers, optical fiber polarizers and novel sensing are illustrated
闡明了長周期光纖光柵用於帶通濾波、光上下路復用、光纖光源、光纖耦合、偏振器件、新型傳感等新技術領域的思路,給出了具體實現方法。A mathematical transformation algorithm precisely reconstructs the spectrum with a 4x signal - to - noise improvement as compared with a slit - based system equipped with identical source, grating and detector components, and 70 - 80x greater than with a fiber input of equivalent resolution
一個數學轉換元演算法則精確地改造了光譜,在使用相同的光源、光柵和探測原件的情況下,與傳統的基於狹縫技術的系統相比,新的光譜儀將信噪比提高了四倍,而進光量提高70 - 80倍。The demodulation method of fiber grating is the key method of fiber grating sensor. the main demodulation method includes : grating matching method, tunable fabry - perot cavity method, non - balance mach - zehnder interferometer method and tunable narrow - band light source method. the tunable fabry - perot cavity method is discussed in detail, and a demodulation system based on dsp is put forward
光纖光柵的解調技術是光纖光柵傳感器的關鍵技術,本文討論了光纖光柵的波長解調方法,包括匹配光柵法、可調諧f - p腔法、非平衡mach - zehnder干涉儀法和可調諧光源法等,詳細分析了可調諧f - p濾波器的特性和解調原理提出了一種基於dsp的解調光纖光柵波長的可調諧法布里一珀羅腔解調方案。In the first place, start with theoretic model of distributed fbg strain - sensing network, sensing principle of fiber bragg grating is analyzed and sensing model created. on the basis of analyzing advantages and disadvantages of several familiar multiplexing and demodulation techniques, a mixture multiplexing method that combines optical frequency domain reflectometry ( ofdr ) and wavelength division multiplexing ( wdm ) is proposed to address fbg sensing array. at the same time, tunable narrow - band light source, which is composed of wide - band light source and tunable optical filter, is adopted to demodulate multiplex signals
首先,論文從分散式光纖光柵應變傳感網路的理論模型入手,分析了光纖布拉格光柵的傳感機理,建立光纖光柵應變傳感模型;在分析比較了常見幾種復用技術和信號解調技術的優缺點基礎上,提出應用光頻域反射復用技術和波分復用技術相結合的混合復用方法來解決光纖光柵應變傳感網路的尋址問題,採用由寬帶光源和可調諧光濾波器組成的可調諧窄帶光源來解調復用信號,通過理論分析和實驗研究證實了系統方案的可行性。Being key components of optical fiber communication, fabry - perot filters and fiber grating filters have been applied in optical sources, wdm multiplexing and de - multiplexing, and add - drop multiplexing, wavelength routers, optical switching of all optical network etc., which greatly promote the advance of high. speed optical communication technology
而法布里-珀羅濾波器和光纖光柵濾波器是現代光通信系統中的關鍵器件,它被廣泛應用於光纖通信的各個關鍵環節,從光源、波分復用的分波和合波,到全光網路的上下路、波長路由;光交換等。As a sensor, fbg can be immune from light source disturbance and system loss by transforming sensing information into its reflecting wavelength shift, that is wavelength coding
作為傳感元件,光纖光柵將被測信息轉化為其反射波長的移動,即波長編碼,因而不受光源功率波動和系統損耗的影響。分享友人