掺锗硅基高非线性光纤超连续光源研究  

Supercontinuum Generation in High Nonlinear Germano-Silicate Fiber

作　　者：马鸿志[1] 许立新[1] 王安廷[1] 顾春[1] 高伟清[1] 明海[1] 

机构地区：[1]中国科学技术大学物理系安徽省光电子科学与技术重点实验室,安徽合肥230026

出　　处：《光学与光电技术》2008年第5期29-32,共4页Optics & Optoelectronic Technology

基　　金：国家自然科学基金(10576031)资助项目

摘　　要：利用非线性偏振旋转锁模掺铒光纤激光器和1100m长的掺锗硅基高非线性光纤制作了超连续光源,获得了从1150～1750nm的超宽带输出光谱,其中1150～1350nm波段光谱起伏小于3dB,1600～1700nm波段平坦度优于1dB,并有很好的向长波延展空间。光谱展宽的机理为孤子分裂与受激拉曼散射,而四波混频使光谱进一步展宽。A supercontinuum generation in 1 100 m germano-silicate high nonlinear fiber is demonstrated. An ultra-broad- band supercontinuum of 1 150～1 750 nm is achieved. The ripple between 1 150 nm and 1 350 nm is less than 3 dB, and the ripple between 1 600 nm and 1 700 nm is less than 1 dB. The supercontinuum is expected to extend broadly in wavelength over 1750 nm. A nonlinear Schroedinger equation model is adopted to indicate the spectral broadening mechanism is soliton fission and stimulated Raman scattering in soliton, and four wave mixing also plays an important role.

关 键 词：超连续光谱 高非线性光纤 掺铒光纤锁模激光器 孤子分裂 非线性偏振旋转 

分 类 号：TN25[电子电信—物理电子学]