%0 Journal Article %T Design and Numerical Analysis of Ultra-High Negative Dispersion, Highly Birefringent Nonlinear Single Mode Core-Tune Photonic Crystal Fiber (CT-PCF) over Communication Bands %A Amit Halder %A Wahiduzzaman Emon %A Md. Shamim Anower %A Md. Riyad Tanshen %A Md. Forkan %A Md. Sharif Uddin Shajib %J Optics and Photonics Journal %P 227-242 %@ 2160-889X %D 2023 %I Scientific Research Publishing %R 10.4236/opj.2023.1310021 %X This paper presents the development of a highly efficient CT-PCF (Core-Tune Photonic Crystal Fiber) with substantial birefringence, tailored for applications in high-bit-rate communication and sensing while minimizing signal loss. The design incorporates a modified broadband dispersion compensating structure, optimized for operation across the E, S, C, and L communication bands within a wavelength range spanning 1360 nm to 1625 nm. Notably, the CT-PCF demonstrates a remarkable birefringence of 2.372 กม 10-2 at 1550 nm, surpassing traditional PCF structures. Single-mode performance is evaluated using the Higher Order Mode Extinction Ratio (HOMER) method, revealing a peak HOMER value of 104 at 1550 nm. Furthermore, at 1550 nm, the CT-PCF exhibits exceptional nonlinear characteristics, featuring a high nonlinearity of 50.74 W-1⋅Km-1 for y polarization. In comparison to existing designs, the proposed CT-PCF exhibits superior performance metrics and optical characteristics. Additionally, the y polarization dispersion coefficient of the CT-PCF at 1550 nm is measured at -3534 ps/(nm⋅km). Overall, the CT-PCF represents a significant advancement, outperforming established systems in terms of performance metrics and optical properties. %K Negative Dispersion %K Birefringence %K Confinement Loss %K HOMER Method %K Single-Mode Performance %K Optical Properties %U http://www.scirp.org/journal/PaperInformation.aspx?PaperID=128304