Measurement and numerical simulation of the bandgap in hollow-core photonic crystal fibers
空芯光子晶体光纤光子带隙的测量与数值模拟

The full-vector plane-wave method was used to calculate the bandgaps of the photonic crystal fiber with triangular structure. The transmission spectrum of the hollow-core photonic crystal fiber fabricated by Yanshan University was measured, and we obtained the relation between the transmission intensity and the wavelength in visible region. In the subsequent experiment, the mode field patterns were observed. The theoretical simulation is well consistent with the experimental result.