A defected core highly birefringent dispersion compensating photonic crystal fiber

In this paper we propose a defected core Photonic Crystal Fiber (PCF) having circular lattice that ensures Residual Dispersion Slope (RDS) matched negative dispersion covering S+C+L communication bands with high birefringence for sensing purpose. The results show that this PCF has an average value of negative dispersion of -331 ps/nm-km & offers high birefringence of 2.75×10 -2 with relative dispersion slope (RDS) perfectly matched to that of single mode fiber of about 0.0036 nm -1 at the wavelength 1550 nm. Due to its optical properties, the proposed fiber can be considered as an excellent candidate for sensing applications by maintaining single polarization along with dispersion compensation in optical fiber transmission system.