Bài báo khoa học

In this paper, we propose two new hexagonal photonic crystal fibers (PCFs) with core-filled nitrobenzene (C6H5NO2) and 1,2-dibromoethane (C2H4Br2) with small effective mode areas. The small effective mode area is achieved by selecting PCFs with five lattice rings and the size of the two air holes on the x-axis of the first ring is larger than the other air holes in the cladding. We numerically analyze and compare the effective area of PCFs with these two different liquid permeation structures, in which the influence of lattice constant and filling factor on the effective mode properties of PCFs is noted. C6H5NO2-core PCF possesses a smaller effective mode area than the C2H4Br2-core PCF at 1550 nm. The proposed fibers with this small effective mode area open up good application opportunities for PCFs in supercontinuum generation.