Author(s)

Amit Halder^1,2*, Wahiduzzaman Emon³, Md. Shamim Anower², Md. Riyad Tanshen¹, Md. Forkan¹, Md. Sharif Uddin Shajib¹

¹Department of Electrical and Electronic Engineering, World University of Bangladesh, Dhaka, Bangladesh.
²Department of Electrical and Electronic Engineering, Rajshahi University of Engineering and Technology (RUET), Rajshahi, Bangladesh.
³Department of Electrical and Electronic Engineering, Ahsanullah University of Science and Technology (AUST), Dhaka, Bangladesh.

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 × 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.

Negative Dispersion, Birefringence, Confinement Loss, HOMER Method, Single-Mode Performance, Optical Properties

Halder, A. , Emon, W. , Anower, M. , Tanshen, M. , Forkan, M. and Shajib, M. (2023) Design and Numerical Analysis of Ultra-High Negative Dispersion, Highly Birefringent Nonlinear Single Mode Core-Tune Photonic Crystal Fiber (CT-PCF) over Communication Bands. Optics and Photonics Journal, 13, 227-242. doi: 10.4236/opj.2023.1310021.