【摘 要】
：
Optical amplified characteristics of innet cladding fibres with InP thin films are tested.The results indicate that this kind of fibres exhibit better optical a
【机 构】
：
Key Laboratory of Optical Communication and Lightwave TechnologiesMinistry of Education,School of Sc
论文部分内容阅读
Optical amplified characteristics of innet cladding fibres with InP thin films are tested.The results indicate that this kind of fibres exhibit better optical amplification,which is advantageous for short lengths of fibres.The amplification coeffients of per unit length are 1.40-5.12dB/m at the wave band from 906 to 1044nm.1.40-15.35dB/m from 1080 to 1491 nm.and 1.86-7.44dB/m from 1524 to 1596nm.Based on the hydrogen atomic model,we calculate the comparative size of the InP particle αB=8.313 nm.The result displays the quantum size effect.By calculating the change of the energy band of particles with different sizes,the experimental data are explained by quantum size effect.
其他文献
七十年代,我国粳型三系育种通过籼粳“架桥”制恢,成功地培育了广谱强优势粳型恢复系C57,使杂交粳稻继杂交籼稻之后又在国际上率先进入生产应用领域。配组的第一个杂交粳稻黎
We obtaln an asymptotic solution to the vertical branch-cut integral of shear waves excited by an impulsive pressure point source in a fluid-filled borehole,by
豫豆4号系延津县农牧局1978年用钴60r 射线1.5万伦琴照射农家品种药黑豆,经1979～1982年连续选择育成。1983～1984年品比试验中比农家药黑豆平均增产51.6%,早熟15天,抗倒力提高2
The mechanism of destabilization is studied for the rotating vortices (scroll waves and spiral waves) in excitable media induced by a parameter modulation in th
前言烤烟种子生产和烟叶生产的目的不同,二者既矛盾又统一。前者是以获得量多质优的种子为目的,后者则以获得优质和一定生产水平的烟叶为目的。由于栽培的目的不同,采取的措
We present an experimental study on the continuous atom laser. The experiments show that a high field seeking state atom laser with stable flux can be formed by
A simplified scheme of bend-induced mode distortion is introduced into bent holey fibres,the distorted mode distribution and mode effective area reduction are i
A simple dip-stick type uniaxial stress actuator for ac-susceptibility measurement is designed. Target pressure can be achieved by smooth and continues work car
新高考背景下我国教育逐步转向注重学生的个性化和多元化发展,传统整齐划一的工业教育模式已经无法满足当下及未来经济社会发展对人才的需求.学生导师制现已成为学校促进学生
夏玉米苗期正值雨季,天气高温多湿,杂草生长迅速,人工锄草劳动强度大,如遇阴雨连绵天气,锄耪稍不及时,就会造成严重草荒,影响秋季产量。1987年我们对不同除草剂的混用在夏玉