【摘 要】
：
Based on a hybrid genetic algorithm, the bandwidth for distributed multi-pump Raman amplifier (DMRA) is optimized. Optimal results show that signal bandwidth △
【机 构】
：
Department of Electronic Engineering, Tsinghua University, Beijing 100084
论文部分内容阅读
Based on a hybrid genetic algorithm, the bandwidth for distributed multi-pump Raman amplifier (DMRA) is optimized. Optimal results show that signal bandwidth △λ can be evidently broadened by means of increasing the number of pumps, △λ decreases with the increase of Raman gain and with the improvement of flatness property, and the hybrid erbium-doped fibre amplifier and DMRA can availably overcome the weakness of pure DMRA.
其他文献
Enhanced confinement has been achieved by the centre fuelling of pellet injection on the HL-2A tokamak. The energy confinement time increases from 50ms to 140ms
A velocity interferometer system for any reflector (VISAR) is used to measure the sound velocity of LY12 Al shock-compressed to peak pressures of 20, 32, 55 and
论文从色彩表现的历程为主线,选取了几个具有代表性的时期(流派)为主要对象,从色彩的兴起(史前美术)到威尼斯画派,印象派与后印象派,野兽派.一系列串联下来,表现了不同的色彩
We study a two-level atom in interaction with a real massless scalar quantum field in a spacetime with a reflecting boundary. We calculate the rate of change of
In the all-optical switches using Mach-Zehnder interferometer side-coupled with a ring resonator, the switching power is quadratically reversely proportional to
"中国农民画是以农民作者为创作主体,以农业、农村、农民为主要题材,具有民族、民俗、原发、原创的特征,是表现地域文化、民间风格的中国绘画.农民画源于农村,源于农民生产、
It is shown on general ground that there exist two qualitatively distinct solutions of the Dyson-Schwinger equation for the quark propagator in the case of non-
《利己主义者》是英国小说家乔治·梅瑞狄斯的代表作,作品中多处巧合情节的安排使小说迂回曲折,跌宕起伏,也使得梅瑞狄斯对喜剧精神的探索更具深度.以梅瑞狄斯女性主义思想为
We present a calculation scheme with significant modifications and improvements for determining the ionization balance and the ion temperature evolution in an e
《别名格雷斯》讲述了十九世纪中期维多利亚女性艰难的生存处境和难以逃离的不幸遭遇.玛格丽特·阿特伍德以深厚的文学底蕴,将女性日常生活刻画的细致入微,旨在揭露社会中的