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العنوان
Study of Nonlinear Propagation of Ultrafast Lasers Pulses through Optical Fibers /
المؤلف
Sayed, Mahmoud Kamel Moawad.
هيئة الاعداد
باحث / محمود كامل
مشرف / محمد عطا
مشرف / هشام ع الغني
الموضوع
Lasers. Optical fibers. Photonics.
تاريخ النشر
2022.
عدد الصفحات
viii, 76 p. :
اللغة
الإنجليزية
الدرجة
ماجستير
التخصص
الطاقة (متفرقات)
تاريخ الإجازة
1/1/2022
مكان الإجازة
جامعة القاهرة - المعهد القومى لعلوم الليزر - علوم الليزر
الفهرس
Only 14 pages are availabe for public view

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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.