%0 Journal Article %T Two Modes Near-zero Dispersion Flattened Photonic-crystal Fiber %J - %D 2018 %R http://dx.doi.org/10.3968/10726 %X Through massive computer simulation, a photonic-crystal fiber with seven air-hole defects as fiber core is proposed by using the software CUDOS based on the multipole method. In the given fiber parameters, the photonic-crystal fiber¡¯s fundamental and second modes are dispersion flattened simultaneously in the communication O wave band, S wave band and C wave band. It is important in the relative application of multi-mode dispersion flattened photonic-crystal fiber. %K Photonic-crystal fiber %K Double-mode dispersion flatten %K Multipole method. %U http://cscanada.net/index.php/mse/article/view/10726