泵浦光源 meaning in English
pump light source
Examples
- The tapered and semi - tapered fiber can be arranged in line or array , which has the wide application to the laser diode pumping solid state laser and the power outputting of the high - power laser diode array
这种锥形和半锥形光纤耦合系统可以方便的排成线阵或阵列，在二极管激光器泵浦固体激光器的泵浦光源输出、大功率半导体激光器阵列的光功率输出都有重要的应用价值。 - Raman fiber amplifier （ rfa ） is a kind of optical amplifier that can amplify signal light directly through nonlinear interaction of high intensity pump and signal light in fiber . whereas the spectrum of raman gain coefficient of optical fiber is not flat , the gain of signal light with different wavelength induced by a single pump is rather different , when wavelength division multiplexing ( wdm ) signal light is amplified by a single pump , the gain spectrum of the wdm signal light is not flat . the flatness of the wdm signal light has important impact on the optical signal - to - noise ratio ( osnr )
拉曼光纤放大器（ ramanfiberamplifier ,简称rfa ）利用高强度的泵浦光与信号光在光纤中的非线性相互作用实现信号光的直接放大，但是由于光纤的拉曼增益系数谱很不平坦，所以同一泵浦光源对不同波长信号光的增益就存在很大的差别,因此,用单泵浦光源来放大波分复用( wavelengthdivisionmulti - plexing ,简称wdm )信号光时，各信号光的增益值就有很大差异， wdm信号增益的平坦度对光信噪比( opticalsignal - noiseratio ,简称osnr )有重要影响。 - Ytterbium ( yb ) - doped silica fibers have a broad - gain bandwidth ( 850 ~ 1050nm ) , excellent power conversion efficiency , and a broad - absorption bandwidth ( 900 ~ 1200nm ) . their ability to provide amplification over the very broad wavelength range from ~ 975nm to ~ 1200nm is expected to generate increasing interest in the near future . they offer an almost ideal gain medium for the fiber lasers and fiber amplifiers that work at the wavelength around 1 m
掺镱石英光纤具有几个方面的优点,如能级结构简单,与掺er3 + 、 nd3 +等稀土离子的光纤相比,不存在对泵浦光或信号光的激发态吸收( esa ) ,可以有更高的掺杂浓度;有较宽的吸收光谱( 850 ~ 1050nm ) ,可以利用多种泵浦光源来设计泵浦方案;辐射光谱宽( 900 ~ 1200nm ) ,激光输出波长可以有很宽的可调谐范围。 - Secondly , basing on the theory of on - off gain of small signal , the raman gain coefficient for frequency shift between 0 . 5 and 20 thz of standard sigle mode optical fiber is measured by pump - probe method through a super luminescent diode ( sld ) as a broadband small signal probe source . thirdly , numerical simulation analysis of gain characteristic of raman fiber amplifier for c band wdm signal light is made according to the raman gain coefficient of the fiber measured before through target and four rank runge - kutta method . at the invariability of wavelength and maximum power of each of two pumps , schematic of powers of two pumps for best flatness on c band wdm optical gain was found out , at the same time , the factors of resulting in gain saturation is analyzed , too
本文首先应用经典的电磁理论对拉曼光纤放大器的工作机制进行了分析，然后，根据小信号理论推导出的开关增益求出了光纤拉曼增益系数的表达式，采用泵浦-探测波的方法，利用超辐射激光二极管( superluminescentdiode简称sld )作为探测光源，测量了所用标准单模光纤频移为0 . 5 - 20thz的拉曼增益系数，之后根据所测得的光纤的拉曼增益系数谱对应用该类光纤构成的放大c波段wdm光信号的拉曼光纤放大器的增益特性采用打靶法和四阶龙格- - -库塔进行了数值计算，在给定了两个泵浦光源的波长和最大功率后，找出了反向泵浦情况下使c波段wdm光源增益最平坦的两个泵浦的各自最佳功率，同时也分析了导致信号光饱和的原因。 - On the other hand the crosstalk of the wdm signal at fan - out of demultiplexer will increase with the power difference of the each channel . therefore , the gain of optical amplifier to wdm signal must have small ripple . one of the solutions is using two or more pumps with different wavelength and power according to the range of signal light to be amplified and raman gain coefficient of the fiber
另外，各路信号光之间较大的功率差异会增加wdm信道解复用器输出端的串话，所以光放大器对wdm各路信号光的增益要满足一定的增益平坦度，解决该问题可以根据所要放大的wdm信号光的波长范围和所用光纤的拉曼增益系数谱，采用多个不同波长和功率的泵浦光源进行泵浦。