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In this paper, we compare the dispersion characteristics of pure silica PCF, hollow-core permeable Carbon disulfide (CS2) circular lattice with hollow-core PCF permeable Carbon disulfide square lattice with the variation of air-hole diameter in the first ring near the core, the fill factor of the first round d1/Ʌ varies from 0.3 to 0.85 for lattice constants () 1.0m; 1.5m; 1.8m and 2.0m. Based on the analysis of simulated results, we compare dispersion graphs of two types of PCF, thereby proposing two optimal structures for each type of network. For circular network PCF:  CF1 ( = 1.0m; d1/ = 0.65);  CF2 ( = 1.5m; d1/ = 0.3) and PCF square network:  SF1 ( = 1.0m; d1/ = 0.8);  SF2 ( = 1.5m; d1/ = 0.3). The dispersion value of CF1 fiber ( = 1.0m; d1/ = 0.65) at 1.25m pump wavelength is -1.20 ps/nm/km, of  SF1 fiber (  = 1.0m; d1/ = 0.8) at 1.30m pump wavelength equals -16.87 ps/nm/km. The #CF2 and #SF2 structures have anomalous dispersion and intersect the zero dispersion line at one point, where the #SF2 structure has lower dispersion. We see the same CS2 permeation, but the optimal fiber dispersion value of circular network PCF is superior to square lattice PCF. This is a very important factor for the applying of super continuous transmission in the near-infrared region of PCF.