| This thesis summarized my research results in the past two years from two aspects:Design of Dispersion Compensation Fibers(DCF),Optical Communication Systems. Nowadays,Dispersion Compensation Fibers are the only commercialized method of dispersion compensation. In this thesis,the dispersion relation (Eigen Value Equation) of Dispersion Compensation Fibers is obtained by a scalar-wave analysis. The equation is also a unified approach to the design of common trible-clad optical fibers. By Genetic algorithm,the optimized refractive index profile (RIP) of DCF is calculated to obtain maximal value of negative dispersion. This RIP ensures the propagation of basic mode in DCFs. Details of DCFs with the RIP is analyzed,including the relation of dispersion and wavelength,variation of dispersion in the C-band,cutoff wavelength of the basic mode,distribution of scalar field and power,macro-bending loss at 1550nm. Based on the optimized RIP,impaction of radius of core and width of depressed cladding is studied. At the same time,a Wavelength Devision Multiplexing system is designed. The system contains 8 channels with rate of 2.5Gb/s per channel. Considering available conditions in the lab,a system with 2 channels is realized. Spectral analysis in all important nodes is reported. This system is the basic of a coming all optical network. |
PDF Full Text Request