Fig. 4: Measured output field intensity distributions of the Dirac-vortex topological PCF under different incident beams and wavelengths.
From: Realization of a Dirac-vortex topological photonic crystal fiber
a Measured input (left panel) and output (right panel) field intensity distributions of the Dirac-vortex topological PCF under incident LP Gaussian beam (top row), CP Gaussian beam (middle row), and the first-order OAM+1 beam (bottom row). The white arrows represent different oriented polarizers. b Measured relative output power of the Dirac-vortex topological PCF under incident APB beam (blue line), OAM+1 beam (red line), CP Gaussian beam (brown line), and LP Gaussian beam (green line) across the full 415 nm communication window (1260–1675 nm). c Measured output field intensity distributions of the Dirac-vortex topological PCF without (top row) and with (lower rows) different oriented polarizers (white arrows) at 1260 nm, 1310 nm, 1360 nm, 1460 nm, 1530 nm, 1550 nm, 1565 nm, 1625 nm, and 1675 nm, respectively.
