Design and Characterization of Highly Birefringent Residual Dispersion Compensating Photonic Crystal Fiber

Design of a pentagonal photonic crystal fiber with high birefringence and large flattened negative dispersion

“…A PCF in a PCF proposed by Tee et al [9] has an average negative dispersion of −457.4 ps∕nm∕km covering the E to U wavelength bands. Recently, an octagonal structure PCF with an elliptical shaped core region proposed by Hasan and co-workers et al [14][15][16] ensures the highest average negative dispersion to date, having an average negative dispersion of −562.52 ps∕nm∕km with an absolute dispersion variation of 12.1 ps/nm/km over the S+C+L+U wavelength bands. However, due to the doped core, elliptical air holes, smaller air holes, and elliptical shaped core, all the PCFs mentioned above have complex structures, which makes fabrication difficult.…”

Management of residual dispersion of an optical transmission system using octagonal photonic crystal fiber

“…5-17. It goes without saying that AE0.01 μm changed in structural parameters may happen during fabrication. In that figure, D T changes AE15 to AE30 and AE5 to AE10 ps nm −1 km −1 at the edge of 1.46 and 1.67 μm wavelengths when r 1 varies Referance [12] Referance [14] Referance [5] Referance [6] Referance [15] Referance [16] Referance [17] from AE0.01 to AE0.02 μm. The tolerance of the properties has been analyzed carefully by changing one parameter once all other parameters remain constant.…”

“…8 and 9 are fabrication accuracy of their reported designs since those are additional Ge-doped core structures at the central core area. In addition, Hasan et al 5,15 designed elliptical core octagonal (O) PCF that ensured average NFD T of −546 and −562.5 ps nm −1 km −1 with ΔD of 12 and 12.1psnm −1 km −1 covering S þ C þ L and S þ C þ L þ U bands. The hybrid structures of Refs.…”

“…5,7,15,18 For this reason, we propose a simple octagonal structure with some circular air holes. 5,7,15,18 For this reason, we propose a simple octagonal structure with some circular air holes.…”

“…As a result, the variation of Λ 1 , the change of D T at 1.46 μm is higher than what it is at 1.67 μm. 15 In addition, high nonlinear and high birefringence properties with near zero flattened dispersion between wavelength bands are the main issues for supercontinuum generation. 6 reports that D T changes AE22 to AE44 and AE40 to AE80 ps nm −1 km −1 at the edge of 1.46 and 1.67 μm wavelengths when the value of Λ 2 is varied at AE0.01 to AE0.02 μm.…”