Ultra-Wide Mid-Infrared Supercontinuum Generation in As₄₀Se₆₀Chalcogenide Fibers: Solid Core PCF Versus SIF

Abstract

Due to the pronounced scientific and technical attention paid to mid-infrared spectral region, we focus on ultrawide mid-infrared supercontinuum generation in Αs40Se60 chalcogenide SIF and PCF-step index and photonic crystal fibersusing symmetrized split step Fourier method (S-SSFM). Simulations reveal, in response to launching 100 fs input pulses of 50kW peak powers, with near zero dispersion wavelengths centered about λ0 = 4.25 μm, into 50-mm long Αs40Se60 SIF and solid core PCF, 8.5 and 11-μm supercontinua can be achieved, respectively. Moreover, numerical results also show, when ultra-short pulses of center wavelengths λ0=12 μm are launched into those SIF and PCF, ripple free spectra as wide as 10 and 13 μm can be attained, respectively. These spectra are useful for safe spectroscopic medical imaging diagnosis such as early cancer diagnostics, and other spectroscopic applications such as gas sensing and food quality control.

Supercontinuum Source for Dense Wavelength Division Multiplexing in Square Photonic Crystal Fiber via Fluidic Infiltration Approach

“…SC generation is the result of deviations from ideal soliton conditions experienced by a higher order soliton. It means that a small perturbation results in a higher order soliton with the order of N breaks up to N fundamental solitons [25,28,29].…”

Design of nonlinear photonic crystal fibers with ultra‐flattened zero dispersion for supercontinuum generation

“…Supercontinuum generation has attracted research attention due to its wide application in the field of optics fluorescence microscopy , mid‐infrared SCG optical communication‐based DWDM , and other application. Various efforts using several techniques focused on broadening the generated spectrum.…”

A Review of Mid-Infrared Supercontinuum Generation in Chalcogenide Glass Fibers

“…Various soft-glass fibers made of fluoride [9][10][11], tellurite [12][13][14], and chalcogenide (ChG) glasses [15][16][17] have been used to generate MIR SCs, and numerous achievements have been accomplished. Fluoride and tellurite are both transparent in the wavelength range below 5.5 µm and thus, cannot be used for wavelengths longer than 5.5 µm.…”