摘要：

关键词：光子晶体光纤激光器 超模 talbot效应 菲涅耳衍射积分 远场分布 

单位：Institute of Laser& Otpoelectronics College of Precision Instruments and Opto-Electronic Engineering Key Laboratory of Opto-Electronics Information and Technical Science (Ministry of Education) Tianjin University Tianjin 300072 China Hebei Key Laboratory of Optoelectronic Information and Geo-Detection Technology Shijiazhuang University of Economics Shijiazhuang 050031 China