LIU Yan-yan,Tian Che,QI Yue-feng,GUO Wen-guang.Study on transmission characteristics of photonic crystal fiber gratings with periodic air hole deformation[J].Optoelectronics Letters,2011,7(6):443-446 Study on transmission characteristics of photonic crystal fiber gratings with periodic air hole deformation Author Name Affiliation LIU Yan-yan  School of Information Science and Engineering, Yanshan University； Key Laboratory of Especial Optical Fiber and Fiber Sensor of Hebei Provincie；  Tian Che  School of Information Science and Engineering, Yanshan University；  QI Yue-feng  School of Information Science and Engineering, Yanshan University； Key Laboratory of Especial Optical Fiber and Fiber Sensor of Hebei Provincie；  GUO Wen-guang  School of Information Science and Engineering, Yanshan University；  Abstract:       The paper studies a kind of improved photonic crystal fiber gratings fabricated by CO2 laser heating method. The effective refractive index of cladding induced by periodic air hole deformation is computed using multipole method, and the relationship between the effective refractive index and the collapse of air-holes is discussed, thereby the modulation expression of effective refractive index is obtained. The grating transmission characteristics are simulated. The results indicate that with the... Hits: 4121 Download times: 207 View Full Text    Download reader