A new type of supercontinuum generation in hexagonal lattice C₆H₆-core PCF with broadband and low-power pump

Most of the spectral bandwidths of previous publications are still limited by high input powers making them economically less than ideal. By using a benzene core (C6H6) photonic crystal fiber (PCF) as a new supercontinuum (SC) light source, it is possible to achieve a very large spectral broadening with hundreds of times lower peak power. Due to the change in the diameter of air holes in the first ring near the core, near-zero flattened dispersion, high nonlinearity and small attenuation can be achieved for spectral broadening. The structural geometries of two C6H6-PCFs are optimized to generate wide SC at low input energy. The SC spectrum produced in 1 cm long of all dispersion fiber extends from a part of visible light to the near-infrared range at 1.3 mu m wavelength and a small pulse energy of 18 pJ (or 450W of electrical input). The second PCF shows wide soliton-induced SC from 0.8 to 4.2 mu m with 71 pJ pulse energy (or input power approximately 790W) at 1.5 mu m wavelength within a fiber of 12 cm. The proposed structures have the potential to become a new class of microstructured optical fibers for low-cost, broadspectrum SC generation.