الفهرس | Only 14 pages are availabe for public view |
Abstract The main aim of this thesis is to study numerically the supercontinuum generation in (SC – 5.0 – 1040TM), a highly nonlinear photonic crystal fiber (PCF). Supercontinuum is said to have formed when numerous nonlinear phenomena such as self-phase modulation, cross-phase modulation, four-wave mixing, stimulated Raman scattering, and others contribute to extreme spectrum widening of ultrashort optical pulses. First, the calculations of higher order dispersion coefficients for (SC – 5.0 – 1040TM) photonic crystal fiber are presented. The dispersion coefficient is obtained from the dispersion curve by curve fitting. Then supercontinuum generation obtained in (SC – 5.0 – 1040TM) photonic crystal fiber in the anomalous dispersion regime. Supercontinuum is highly desirable for purposes of spectroscopy, food quality control, pulse compression, gas sensing and various nonlinear applications. The effects on supercontinuum spectra by varying peak power, pulse duration are studied. |