An Optimized Dual Core Micro-structured Fiber for Splitting Applications at Communication Wavelengths

Numerical method is utilized to obtain different important optical properties of a dual core photonic crystal fiber which are vital and essential for effective and dependable optical communications. By changing important structural parameters, a simple design of DC-PCF has been optimized for efficient polarization and wavelength splitting. The proposed design has the potential to be used as a polarization splitter with a small device length and extremely low loss which is capable of decoupling two orthogonal polarized modes with a length of 2.33 mm at a wavelength of 1550 nm. Furthermore, it can be used as a demultiplexer where at an ultra-short device length of 0.334 mm, x-polarized modes of 1550 nm and 1000 nm can be separated and at length of 0.341 mm, y-polarized modes at same wavelengths can also be separated. This short-length polarization and wavelength splitter with low loss is well-suited for applications in integrated optical communications systems.