<p> The rapid increasing bandwidth requirement of communication systems demands
powerful numerical simulation tools for optics fiber. The computational efficient,
memory saving and stable are of the most important characteristics for any simulation
tools used for long-haul and broadband optics fiber. An optimized split-step digital
filtering method is developed in this paper. The concept of Fourier integral and Fourier
series are used in extracting a FIR filter which is used to fit the original transfer function.
A further optimization process which employs windowing technique to improve
computation efficiency had also been done. Compared with split-step frequency method,
our method improves the computation efficiency. Only simple shifts and multiplications
are needed in our method. This optimized digital filtering method differs from the former
digital filtering method in a sense that the filter length of the FIR filter we extracted is
reduced to a very small number. The computation time can be saved as much as 96%
than before. This method can also be used to solve coupled nonlinear Schrodinger
equation which governs polarization mode dispersion effect in fibers. A new simulation scheme for PMD is proposed to save computation time. The propagation results shows good accordance to those already published results. </p> / Thesis / Master of Applied Science (MASc)
| Identifer | oai:union.ndltd.org:mcmaster.ca/oai:macsphere.mcmaster.ca:11375/21899 |
| Date | January 2007 |
| Creators | He, Kan |
| Contributors | Li, Xun, Electrical and Computer Engineering |
| Source Sets | McMaster University |
| Language | English |
| Detected Language | English |
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