FIG. 1. Photonic crystal structure.
FIG. 2. Dual-core hexagonal-shaped photonic crystal fiber.
FIG. 3. Simulated structure of dual core hexagonal-shaped PCF: (a) x-polarized (even mode), (b) y-polarized (even mode), (c) x- polarized (odd mode), (d) y-polarized (odd mode).
FIG. 4. Modal effective indices of the two polarized fundamental modes and band-gap map, as a function of wavelength.
FIG. 5. Effective index varying with wavelength, for different d/D ratios.
FIG. 6. Birefringence variying with wavelength, for different d and constant D values.
FIG. 7. Coupling length for x-polarized light, changing with wavelength.
FIG. 8. Coupling length for y-polarized light, changing with wavelength.
FIG. 9. Normalized power transmission of x-polarized light in cores C1 and core C2 at 1550 nm.
FIG. 10. Normalized power transmission of y-polarized light in cores C1 and core C2 at 1550 nm.
FIG. 11. Normalized power transmission of x- and y-polarized light in core C1 at 1550 nm.
FIG. 12. Normalized power transmission of x- and y-polarized light in core C2 at 1550 nm.
FIG. 13. Extinction ratio of 1.9 mm fiber length versus wavelength, in core C1.
TABLE 1. Effective index for different d/D at 1.55 μm
TABLE 2. Birefringence for different d/D at 1.55 μm
TABLE 3. x-polarized and y-polarized light coupling length at 1.55 μm
TABLE 4. Comparison of conventional splitters with proposed polarization splitter
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