Dissertation > Mathematical sciences and chemical > Crystallography > Crystal physics > The optical properties of the crystal > Electro-optical , playing light, nonlinear optical effect

Theoretical study of the nonlinear optical properties of photonic crystal fiber

Author NiJuan
Tutor ZhengYi
School Zhengzhou University
Course Optics
Keywords Photonic crystal fiber Supercontinuum Four-wave mixing Optical parametric amplification Wavelength conversion
CLC O734.1
Type Master's thesis
Year 2009
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Photonic crystal fiber (PCF) is a periodic dielectric structure arranged special fiber along the fiber end face due to its innovative concept , excellent performance and potential in the field of optical communications , nonlinear optics , optoelectronics application prospects become international photonics industry hot topics . Tunability the PCF and flexible structure so that it has high birefringence , controlled dispersion , the high nonlinearity unique nature . Particularly the PCF unique non-linear characteristics are widely used in parametric amplification , the broadband tunable wavelength conversion , optical fiber communication devices , pulse compression and phase modulation . Therefore , the study of nonlinear optical properties of PCF important academic significance and application value . Theoretical research , the main contents are as follows: 1. Outlines the concept of photonic crystal fiber , performance characteristics , and its application progress , and focuses on the application of nonlinear optical nonlinear optical properties of photonic crystal fiber . Classification discuss the effect of the third-order nonlinear photonic crystal fiber , focused on the problem of multiple light waves in PCF caused by the interaction of four-wave mixing and four-wave mixing and phase matching . Femtosecond optical pulse propagation in photonic crystal fiber nonlinear Schr?dinger equation ( NLSE ) is derived starting from the wave equation ; symmetric step-by-step Fourier method numerical solution of the nonlinear Schrodinger equation , to simulate the high-order dispersion order nonlinear effects on transmission of femtosecond light pulses in PCF ; broadening of femtosecond laser pulses in different dispersion zone transfer time domain and frequency domain analysis ; order dispersion , since the steep , pulse intrapulse stimulated Raman effect PCF ultrashort pulse transmission as well as the continuous spectrum . Establish a description of four-wave mixing theory of nonlinear coupled equations , and the numerical solution of the coupled equations using the Runge-Kutta method ; optical parametric amplification gain characteristics , bandwidth characteristics , as well as the conversion of the wavelength conversion efficiency and conversion bandwidth analog photonic crystal fiber length , nonlinear coefficient of dispersion , the pump wavelength and the pump power of the parametric gain and bandwidth , identify the key parameters that affect its performance .

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