Title :
Comparative analysis of propagation characteristics of two triangular lattice photonic crystal fibers in the middle infrared spectrum
Author :
Hasan, Dihan Md Nuruddin ; Alam, M. Shah ; Mohsin, K.M. ; Hossain, Muhammad Nazmul
Author_Institution :
Dept. of Electr. & Electron. Eng., Bangladesh Univ. of Eng. & Technol., Dhaka, Bangladesh
Abstract :
In this paper, a numerical comparison of optical performances of chalcogenide based PCFs with hexagonal and octagonal symmetry has been performed in the mid-IR spectrum for the first time. A tapering factor has been introduced to investigate the effects of core size for both the cases. Qualitative analysis of group velocity dispersion has been presented for a bandwidth of 3500 nm. Later, air filling fraction has been considered to shift the dispersion profile to anomalous region for the two cases. Finally, effective area method has been applied to find the cut-off region in the phase diagram. It has been found that improvement of bandwidth in O-PCF over H-PCF is subject to air filling fraction and operating wavelength.
Keywords :
chalcogenide glasses; holey fibres; infrared spectra; light propagation; optical fibre dispersion; phase diagrams; photonic crystals; air filling fraction; chalcogenide based PCF; core size; group velocity dispersion; middle infrared spectrum; phase diagram; propagation characteristics; tapering factor; triangular lattice photonic crystal fibers; Air filling fraction; H-PCF; O-PCF; chalcogenide; finite element method; mid-IR; phase diagram; tapering;
Conference_Titel :
Electrical and Computer Engineering (ICECE), 2010 International Conference on
Conference_Location :
Dhaka
Print_ISBN :
978-1-4244-6277-3
DOI :
10.1109/ICELCE.2010.5700642
