Broad and ultra-flattened supercontinuum generation in the visible wavelengths based on the fundamental mode of photonic crystal fibre with central holes

作     者：苑金辉 桑新柱 余重秀 忻向军 申向伟 张锦龙 周桂耀 李曙光 侯蓝田 

作者机构：Key Laboratory of Information Photonics and Optical Communications(BUPT) of Ministry of EducationInstitute of Optical Communication and OptoelectronicsBeijing University of Posts and Telecommunications Institute of Infrared Optical Fibers and SensorsCollege of Information Science and EngineeringYanshan University 

出 版 物：《Chinese Physics B》 (中国物理B（英文版）)

年 卷 期：2011年第20卷第5期

页      面：294-299页

核心收录：

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0704[理学-天文学] 0803[工学-光学工程] 

基　　金：Project supported by the National Key Basic Research Special Foundation of China(Grant No.2010CB327605 and 2010CB328300) National High-Technology Research and Development Program of China(Grant No.2009AA01Z220) the Key Program of Chinese Ministry of Education(Grant No.109015) the Discipline Co-construction Project of Beijing Municipal Commission of Education(Grant No.YB20081001301) the Open Fund of Key Laboratory of Information Photonics and Optical Communications(Beijing University of Posts and Telecommunications) of Ministry of Education the Specialized Research Fund for the Doctoral Program of Beijing University of Posts and Telecommunications,China(Grant No.CX201023) 

主　　题：photonic crystal fibre (PCF) fundamental mode broad and ultra-flattened supercontinuum visible wavelengths 

摘      要：By coupling a train of femtosecond pulses with 100 fs pulse width at a repetition rate of 76 MHz generated by a mode-locked Ti： sapphire laser into the fundamental mode of photonic crystal fibre （PCF） with central holes fabricated through extracting air from the central hole, the broad and ultra-flattened supercontinuum （SC） in the visible wavelengths is generated. When the fundamental mode experiences an anomalous dispersion regime, three phases in the SC generation process are primarily presented. The SC generation （SCG） in the wavelength range from 470 nm to 805 nm does not emerge significant ripples due to a higher pump peak power and the corresponding mode fields at different wavelengths are observed using Bragg gratings. The relative intensity fluctuations of output spectrum in the wavelength ranges of 530 nm to 640 nm and 543 nm to 590 nm are only 0.028 and 0.0071, respectively.