title: Nonlinear coupling in triangular triple-core photonic crystal fibers.
abstract: We report on a numerical analysis of the nonlinear coupling characteristics in triangular triple-core photonic crystal fibers (TTC-PCFs) by using coupled mode theory. The results show that the coupling of the TTC-PCFs exhibit more excellent power selectivity than that of the dual-core PCF and sharper optical switching and coupling-band with lower critical power are implemented in asymmetric TTC-PCF. By adjusting the parameters of the TTC-PCF structure and length, a coupling-band power controlled with better flatness will be obtained, in which more than 90% input power can be transferred. These results maybe offer a new possibility for application fields including optical switching, pulse shaping and pulse compressing.
authors.affiliation: Shaanxi Key Laboratory of Optical Information Technology, The Key Laboratory of Space Applied Physics and Chemistry, Ministry of Education, School of Science, Northwestern Polytechnical University, Xi'an, China.
authors.forename: Peng
authors.initials: P
authors.lastname: Li
authors.forename: Jianlin
authors.initials: J
authors.lastname: Zhao
authors.forename: Xiaojuan
authors.initials: X
authors.lastname: Zhang
mesh_terms: D003198:Computer Simulation; D017076:Computer-Aided Design; D003460:Crystallization; D004867:Equipment Design; D019544:Equipment Failure Analysis; D008962:Models, Theoretical; D017711:Nonlinear Dynamics; D055100:Optical Fibers