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1)  bismuth-based erbium-doped fiber amplifier
铋基掺铒光纤放大器
1.
The processing of backward amplified spontaneous emission in a bismuth-based erbium-doped fiber amplifier;
铋基掺铒光纤放大器中放大自发辐射处理研究
2)  EDTFA
碲基掺铒光纤放大器
1.
In order to suppress transient excursion of output signal,a novel scheme to modify the edge waveform of pulse signal is proposed,and transient response to a signal with slowly changed leading-edge is investigated,which is based on the finite-difference algorithm to simulate four-level rate-propagation equations of new-type broad-band tellurite-based erbium-doped fiber amplifier (EDTFA).
通过有限差分法数值模拟四能级模型下的粒子数速率-光功率传输方程组,理论研究了宽带碲基掺铒光纤放大器(Erbium-doped Tellurite-based Fiber Amplifier ,EDTFA)对于低频脉冲输入信号的瞬态响应。
2.
As we know, the intrinsic gain spectrum characteristics of broadband tellurite-based fiber amplifier (EDTFA) is not flat, so we designed a kind of dual-stage structure with a gain equalization filter between fibers.
针对宽带碲基掺铒光纤放大器(EDTFA)本征增益谱不平坦特性,研究了采用双级串连结构,并在两段光纤中间加入增益均衡滤波器来实现增益平坦。
3.
Based on the rate equations and light propagation equations of four energy level system, the performances of gain and noise figure of broadband erbium-doped tellurite fiber amplifier(EDTFA) with an isolator in the midway are researched.
利用四能级结构速率方程组和光功率传输方程组,研究了在碲基掺铒光纤(EDTF)中内插一个光隔离器、形成两段级联的碲基掺铒光纤放大器(EDTFA)后对EDTFA性能的改善。
3)  erbium-doped tellurite fiber amplifier (EDTFA)
掺铒碲基光纤放大器
4)  EDFA
掺铒光纤放大器
1.
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
2.
Study on noise figure and gain of EDFA;
掺铒光纤放大器增益和噪声研究
3.
A Wideband Amplifier Combining FRA with EDFA;
拉曼光纤放大器(FRA)和掺铒光纤放大器(EDFA)相结合构造宽带放大器
5)  Erbium-doped fiber amplifier
掺铒光纤放大器
1.
Gain and noise figure improvement of the reflection L-band erbium-doped fiber amplifier;
反射式L波段掺铒光纤放大器增益与噪声指数改善
2.
A novel Erbium-doped fiber amplifier(EDFA) pumped by 980 nm LD that improves the L-band amplification performances is demonstrated.
报道了一种新型980 nm激光二极管(LD)泵浦高增益的掺铒光纤放大器(EDFA)。
3.
In the power telecom networks, the distance between two nodes is always too long to use the normal optical transceiver, so we have to use Erbium-Doped Fiber Amplifier (EDFA) additionally.
在电力专网光纤通信电路建设中,由于光纤节点间距离较长,超过一般光端机收发信电平的容许门限,因此需要另外使用掺铒光纤放大器(EDFA)设备。
6)  erbium-doped fiber amplifiers
掺铒光纤放大器
1.
Numerical simulations show that, unlike conventional erbium-doped fiber amplifiers in which nonlinear effects lead to serious distortion of amplified pulses, the proposed device performs not only distortion-free amplification but also efficient compression of ultrashort solitons.
用常规掺铒光纤放大器放大超短光孤子存在一个重大困难 ,就是在放大过程中光纤非线性效应会引起孤子波形及频谱畸变 ,使得输出脉冲不再具有孤子特性 ,从而影响系统性能。
2.
For comparison, we also simulated the performance of soliton system using erbium-doped fiber amplifiers (EDFAs) as in-line amplifiers.
通过计算机系统仿真研究了应用相敏光放大器(PSA)作为在线放大器的光孤子传输系统,并与相应的掺铒光纤放大器(EDFA)光孤子系统作了比较。
3.
The basic principle and characters of the erbium-doped fiber amplifiers are introduced, and their applications and recent advances in the wavelength division multiplexing and optical soliton transmission systems are summarized.
介绍了掺铒光纤放大器的工作原理及特点,重点综述了该放大器在光波分复用系统和光孤子通信系统中的应用和发展动态,并报导了我们最近的研究结果。
补充资料:

bismuth 

   化学元素。化学符号Bi,原子序  数83,原子量208.98037,属周期系ⅤA 族  。古希腊和罗马就使用金属铋,用作盒和箱的底座。但直到1556年德意志G.阿格里科拉才在《论金属》一书中提出了锑和铋是两种独立金属的见解。1753年英国C.若弗鲁瓦和T.伯格曼确认铋是一种化学元素,定名为bismuth。铋在地壳中的含量为2×10-5%,自然界中铋以单质和化合物两种状态存在,主要矿物有辉铋矿(Bi2S3)、泡铋矿( Bi2O3)、菱铋矿(nBi2O3·mCO2·H2O)、铜铋矿(3Cu2S·4Bi2S3)、方铅铋矿(2PbS·Bi2S)。
    铋是银白色金属,性脆,熔点271.3℃ ,沸点 1560℃,密度9.8 克/厘米3,导电和导热性都较差。铋在凝固时体积增大,膨胀率为 3.3%。室温下,铋不与氧气或水反应,加热到熔点以上时能燃烧生成三氧化二铋,铋在红热时也可与硫、卤素化合。铋不溶于非氧化性的酸(如盐酸),但能溶于硫酸和硝酸。铋的氧化态为-3、+3、+5,其中+5价化合物NaBiO5(铋酸钠)是强氧化剂,在分析化学中用于检测Mn。铋的硒化物和碲化物具有半导体性质。
    金属铋用碳还原三氧化二铋制得,可用火法精炼和电解精炼制得高纯铋。铋主要用于制造易熔合金,熔点范围是47~262℃,最常用的是铋同铅、锡、锑 、铟等金属组成的合金,用于消防装置、自动喷水器、锅炉的安全塞,铋合金具有凝固时不收缩的特性,用于铸造印刷铅字和高精度铸型。碳酸氧铋和硝酸氧铋用于治疗皮肤损伤和肠胃病。
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