光电子快报(英文版), 2013, 9 (3): 201, Published Online: Oct. 12, 2017  

Modal cutoff in rare-earth-doped photonic crystal fibers with multi-layer air-holes missing in the core

Author Affiliations
1 Key Lab. of Measurement Technology and Instrumentation of Hebei Province, State Key Lab. of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
2 Laser Institute of Science College, Beijing Jiaotong University, Beijing 100044, China
3 College of Physics and Chemistry, Hebei Normal University of Science&Technology, Qinhuangdao 066004, China
Abstract
The various mode effective indices of the doped photonic crystal fibers (PCFs) are compared, the mode field distributions of the fundamental mode and the second-order mode are analyzed, and the single-mode condition is presented. The mode effective indices of large-core doped PCFs with different core indices and structure parameters are simulated by the finite element method (FEM). The relations of the core index with the fiber structure parameters of pitch, hole-to-pitch ratio and core diameter are obtained for single-mode propagation. In the design and fabrication of the doped PCF, we can adjust the core index and fiber structure parameters to achieve large mode area and single-mode propagation.

ZHAO Xing-tao, ZHENG Yi, LIU Xiao-xu, LI Shu-guang, HAN Ying, HOU Zhi-yun, WANG Na, HOU Lan-tian. Modal cutoff in rare-earth-doped photonic crystal fibers with multi-layer air-holes missing in the core[J]. 光电子快报(英文版), 2013, 9(3): 201.

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