A new-fangled proposal for 4th optical communication windows using 3-D silicon photonics: Future structure for future application

Present contribution proposes a future application of 3D photonic crystal structure in the field of optical communication, where communication deals with the wavelength of 1625 nm to 1675 nm which is represented as 4th optical communication windows. Plane wave expansion method is used to optimize above said silicon structure and the optimization result divulges that aside nature and configuration of the structure, lattice spacing and radius of air holes play vital role to realize the same. For example, lattice spacing of 848 nm and 725 nm of diameter of air holes bestows the complete band gap for 4th optical windows (1625 nm to 1675 nm) regime.