The Characteristics of Core Refractive Index Axial Asymmetry LPFGs Written by Femtosecond Laser

摘要：

Direct writing of long period fiber gratings (LPFGs) in standard single mode fibers (SMF) with infrared femtosecond laser pulses is experimentally investigated. It is found that the transmission spectra of LPFGs present single resonance peak when the microscopic objective is 25×, which is distinct from the LPFGs manufactured by UV laser irradiation with mask. However, when the microscopic objective is 10×, the LPFGs transmission spectra with four rejection bands can be obtained. When the distribution of femtosecond laser energy is changed by insert a diaphragm, the LPFGs transmission spectra present multi resonance peaks.

作者: X.Y.Sun Y.W.Hu J.A.Duan P.Liao X.N.Zhu

作者单位: College of Mechanical and Electrical Engineering, Central South University, The State Key Laboratory College of Mechanical and Electrical Engineering, Central South University, The State Key Laboratory Institute of Modern Optics, Nankai University, Key Laboratory of Opto-electronic Information Science

会议类型: 国际会议

会议名称: The First International Conference on Manipulation,Manufacturing and Measurement on the Nanoscale(第一届3M-NANO国际会议)

会议地点: 长春

会议语种:英文

页码: 1-4

在线出版日期: 2011-08-29（万方平台首次上网日期，不代表论文的发表时间）