Abstract
A photonic-crystal fiber (PCF) with a forbidden photon band (FPB) in the visible spectral range has been created for the first time. The PCF shell comprises concentric layers of hollow circular air-filled channels with variable diameters. The optical transmission of the proposed PCF and the influence of the geometric parameters on the FPB width and position in the visible spectral range have been studied. By varying the PCF structure and geometry, it is possible to change the FPB characteristics, which offers broad possibilities of output light control.
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