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增益平坦滤波器     
相关语句
  gain flattening filter
     6 dB variation within 50 nm (1485-1535 nm) ,and the filters with three LPFGs can make gain spectrum to realize 0.5 dB variation within 49 nm (1495-1539 nm ) and 1 dB variation within 5 nm(1485-1540 nm). It is very significant for extending the range of gain flattening filter with LPFGs and extending the band-width of gain spectrum of single pumped fiber Raman amplifier.
     由三个长周期光纤光栅级联滤波组合,可以使增益图谱在49 nm(1490-1539 nm)带宽内,增益平坦度达到0.5 dB, 55 nm(1485-1540 nm)带宽内,增益平坦度达到1 dB.这对扩大长周期光纤光栅增益平坦滤波器的运用范围,扩大单泵浦S波段光纤拉曼放大器的有效增益带宽有着积极的意义.
短句来源
     Design of EDFA gain flattening filter using cascaded M-Z interferometer
     级联M-Z型掺铒光纤放大器增益平坦滤波器的设计
短句来源
     To reduce the degradation of a wavelength division multiplex (WDM) system caused by the uneven-gain of Erbium-Doped Fiber Amplifier (EDFA),the least Pth-norm method (a method in digital filter design) was used to design the cascaded Mach-Zehnder interferometer-based EDFA gain flattening filter.
     针对掺铒光纤放大器(EDFA)增益不平坦对波分复用(WDM)系统传输质量的影响,将有限冲激响应(FIR)滤波器的设计方法引入到级联Mach Zehnder干涉仪型EDFA增益平坦滤波器的设计中.
短句来源
     The chirp and apodization characteristics of long-period grating(LPG) are analyzed,and the theoretic foundation of adjustable gain flattening filter based on LPG is provided.
     分析了长周期光纤光栅(LPG)的啁啾特性和切趾特性,给出了基于LPG的增益平坦滤波器可调的理论依据。
短句来源
     Thus,we can regulate the parameters of the filter at the different temperature range according to different requirement,and realize dynamic regulation of the gain flattening filter.
     可根据不同需要在不同的温度范围内调节滤波器的损耗峰值和带宽,实现增益平坦滤波器的动态可调。
短句来源
更多       
  gain flatness filter
     Analysis of a Novel Liquid Crystal Dynamic Gain Flatness Filter
     一种新型液晶动态增益平坦滤波器研究
短句来源
     Study on Fabrication of Gain Flatness Filter Based on Long Period Fiber Grating
     基于长周期光纤光栅的增益平坦滤波器的研制
短句来源
     We used themethod of gain flatness filter in C-band to get flatness output. The max outputpower can reach to 23dBm, gain flatness bandwidth get to 32nm, gain flatness isless than 1dB, noise figure is less than 5.0dB, this kind of structure of C-bandEDFA had already used in production. High efficiency L-band EDFA that based onFiber Bragg Grating (FBG) had been conducted to the experimental study.
     C波段采用常规结构并加入增益平坦滤波器,其在1529nm~1562nm范围内增益可达33dB(输入功率-10dBm),噪声系数小于5.0dB,平坦度小于1.0dB;
短句来源
     In this paper,we set up a Novel Liquid Crystal Dynamic Gain Flatness Filter(DGFF), introduce the structure and analyze the principle carefully, then deduce the optical signal transmission expression theoretically and emulate the DGFF.
     提出了一种新型液晶增益平坦滤波器(DGFF),对其基本结构,对其工作原理分别进行了介绍和分析;
短句来源
     The gain flatness filter of FRA has been designed and manufactured by the optical fiber grating and gets a good result.
     设计和制作了光纤光栅的增益平坦滤波器,取得了较好的增益平坦效果.
短句来源
  gain flattening filters
     Study on gain flattening filters based on chirped fiber Bragg gratings
     基于啁啾光纤光栅的增益平坦滤波器
短句来源
     Dynamic Gain Flattening Filters Based on Long-Period Gratings
     基于长周期光纤光栅的动态增益平坦滤波器
短句来源
  gain-flattening filters
     Design on Gain-Flattening Filters of L-Band EDFAs
     L波段掺铒光纤放大器的增益平坦滤波器设计
短句来源
     LPG have been demonstrated as band-rejection and gain-flattening filters for improving Er-doped fiber amplifier systems, and also used as temperature/strain sensors, as well as sensing demodulators.
     已经证实LPG可以改进掺铒光纤放大器系统,因此可以用作带阻滤波器和增益平坦滤波器,另外它也可以用作温度和压力传感器,还可以用作光纤光栅传感解调器。
短句来源
     The target reflection spectrum of chirp gratings is derived from the ideal transmission spectrum of gain-flattening filters. A constant, α, is utilized to control the length of chirp gratings, which is relative with group time delay of reflection spectrums. When α is equal to 0.0024 cm2, the grating has a short length of 3.5 cm.
     啁啾光栅的目标反射谱由理想的增益平坦滤波器透射谱获得 ,利用与反射谱群时延有关的常数α可控制光栅的长度 ,α取值为 0 0 0 2 4cm2 时 ,对应的光栅长度为 3 5cm。
短句来源

 

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      gain flattening filter
    Description of gain flattening filter technologies Several GFF technologies can be used to perform the task of gain equalization.
          
    In this project, you will simulate and evaluate such a gain flattening filter.
          
      gain flattened filter
    And a 50 nm gain flattened width was successfully obtained by using a chirp fiber Bragg grating (CFBG) gain flattened filter with gain ripple of ±0.6 dB.
          
      gain flattening filters
    Although the signal gain provided by the EDFA technology is inherently wavelength-dependent, it can be corrected with gain flattening filters.
          
    Gain flattening filters are sometimes used to reduce this gain ripple.
          
    Superior athermal package design is mandatory for FBG DWDM filters, as well as for other components such as gain flattening filters.
          
    While the signal gain provided with EDFA technology is inherently wavelength-dependent, it can be corrected with gain flattening filters.
          
      其他


    A filter is designed to flatten the gain of an erbium doped fiber amplifier by means of analyzing and calculating the coupling between fibers guided and cladding modes caused by long period fiber gratings using coupled mode theory.The filter consists of three long period fiber gratings.For a typical gain spectrum of erbium doped fiber amplifers,this filter realizes ≤0.3 dB gain variation over a bandwidth of 33 nm.It is shown that the selected datum gain can be retained and there is only a little reduction...

    A filter is designed to flatten the gain of an erbium doped fiber amplifier by means of analyzing and calculating the coupling between fibers guided and cladding modes caused by long period fiber gratings using coupled mode theory.The filter consists of three long period fiber gratings.For a typical gain spectrum of erbium doped fiber amplifers,this filter realizes ≤0.3 dB gain variation over a bandwidth of 33 nm.It is shown that the selected datum gain can be retained and there is only a little reduction of the corresponding bandwidth.

    运用耦合模理论 ,通过对长周期光纤光栅形成的光纤中导模和包层模耦合的分析计算 ,设计了一个由三个长周期光纤光栅组成的掺铒光纤放大器的增益平坦滤波器。针对掺铒光纤放大器的一个典型增益曲线 ,这一滤波器可实现 33nm带宽内小于 0 .3dB的增益平坦 ,而且所选取的基准增益得到保留 ,基准增益对应的增益带宽损失很小

    In broadband (~35 nm) EDFAs, gain flattening filter can be inserted between the two stages of EDFs. In this paper, an iteration algorithm for designing the filter′s transmission function is proposed. The principle of this algorithm is taking the advantages of homogeneous broadening and gain compensation between two stages. In each iteration step, the average gain level is taken as reference, and within the wavelength range where the gain is higher than the reference, an inverse gain spectrum is used to modify...

    In broadband (~35 nm) EDFAs, gain flattening filter can be inserted between the two stages of EDFs. In this paper, an iteration algorithm for designing the filter′s transmission function is proposed. The principle of this algorithm is taking the advantages of homogeneous broadening and gain compensation between two stages. In each iteration step, the average gain level is taken as reference, and within the wavelength range where the gain is higher than the reference, an inverse gain spectrum is used to modify the transmission function. Then the gain within other wavelength range will be compensated automatically. Simulation results show that by using this iteration algorithm, the flattened gain can reach the possible highest value of the original amplifier, and noise penalty is the minimum.

    针对在两段掺铒光纤中插入滤波器实现宽带 (35nm)增益平坦的滤波器透过谱的设计问题 ,提出了一种新的迭代算法。其原理是利用放大器的均匀展宽特性和级连放大器自动增益补偿的特性。在每次迭代中 ,都取要求带宽内增益 (分贝数 )的平均值为参考轴 ,在增益比该轴高的波长范围内再附加一与增益谱反对称的损耗谱。而增益低于参考值的波长处则会得到自动的增益补偿。模拟计算结果表明 ,用该方法得到的滤波谱能使放大器的增益平坦在原放大器可能得到的最高增益水平 ,同时因滤波器的引入带来的噪声特性恶化也最小。

    The effects of several factors on the gain spectrum of a Raman fiber amplifier (RFA) are discussed. Pump evaluation is discribed by computer simulation with four pump laser diodes. Two methods are used to flaten the gain spectrum, gain flaterfilter (GFF) and pump distribution, and it is found that the pump distribution is better than GFF.

    分析了影响拉曼光纤放大器增益谱的几个因素。在四抽运激光器抽运时 ,模拟了多抽运激光器抽运时的拉曼增益谱特性。实验中 ,采用增益平坦滤波器和功率分配两种方法实现增益谱平坦 ,指出了功率分配方法的优势。

     
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