Design of large-mode-area multi-core photonic crystal fibers with low confinement loss and dispersion
M. Liu+, J. Yang*, T. Zhu*
+College of Communication Engineering, Chongqing University, 400044 Chongqing, China
*Key Laboratory of Optoelectronic Technology and Systems (Education Ministry of China),
Chongqing University, 400044 Chongqing, China
Abstract
Through doping high refractive index materials into the core
region, we propose a kind of large-mode-area multi-core photonic crystal
fiber (MCPCF) with low confinement loss and dispersion. The fiber is
designed numerically by using full vectorial finite element method (FEM)
and the characteristics of the fiber such as effective mode
area, confinement loss and dispersion are investigated.
The MCPCF exhibits
large effective mode area, ultralow confinement loss
and dispersion in the
communication window of 1-1.6 μm.
The MCPCF can be used as matrix fibers in
high power fiber lasers with the requirements of high thermal damage
threshold and low nonlinear effects.