Investigation of Highly Broadb and Supercontinuum Generation in a Suspended As۲Se۳ Based Ridge Waveguide

In this paper, the generation of a highly broadband supercontinuumspectrum has numerically been investigated in a suspended As۲Se۳ based ridgewaveguide. By changing the dimensions of the proposed waveguide, the dispersion hasbeen engineered to achieve a suitable profile with the two zero-dispersion wavelengthsas well as the lower magnitude and flat anomalous dispersion regime. Due to the highrefractive index contrast between the core and cladding, the propagated light has beenhighly confined in the core and as a result, a high optical nonlinear coefficient has beenobtained. Simulation results show that when the pump pulses with a width of ۱۰۰ fs andpeak power of ۱KW at the wavelength of ۲۱۵۰ nm are injected into the designedراهنمای موج با طول ۰.۸ میلی متر ، ابرمتنت تولید شده را می توان در محدوده طول موج از ۱.۴ تا ۱۸μm گسترش داد. چنین ساختار راهنمای موج برای منابع فوق پیوسته مادون قرمز درون تراشه که در بسیاری از زمینه ها مانند توموگرافی انسجام نوری ، اثر انگشت ، طیف سنجی مولکولی و غیره بسیار مهم است بسیار قابل استفاده است

کلیدواژه ها:

supercontinuum generation ، dispersion ، ridge waveguide ، Zero- Dispersion Wavelength ، highly nonlinear