Author/Authors :
Koohi-Kamali، Farshid F نويسنده Department of Electrical Engineering, Science and Research Branch, Islamic Azad University, Tehran 1477893855, Iran , , Ebnali-Heidari، Majid M نويسنده Faculty of Engineering, Shahrekord University, Shahrekord 8818634141, Iran , , Moravvej-Farshi، Mohammad Kazem M. K نويسنده Tarbiat Modares University ,
Abstract :
We report the results of our study on the role of microfluidic infiltration technique in improving the coupling characteristics of dual-core photonic crystal fiber (PCF) couplers. Using the finite element method (FEM), we evaluate the effective mode area, dispersion and coupling parameters of an infiltrated dual-core PCF. We use these parameters to design a compact and reconfigurable coupler by solving a set of coupled generalized nonlinear Schrodinger equations. This approach allows one to obtain wavelength-flattened dispersion characteristics with bandwidth of 0.8 × (10) ^ (-6) m in the ITU region, and large walk-off length simply by choosing a suitable infiltrated refractive index. We also demonstrate that under certain conditions one can observe a pulse break-up effect to generate pulse trains with high repetition rate.