δείτε την πρωτότυπη σελίδα τεκμηρίου στον ιστότοπο του αποθετηρίου του φορέα για περισσότερες πληροφορίες και για να δείτε όλα τα ψηφιακά αρχεία του τεκμηρίου*
Influence of fiber nonlinearities in the performance of ran all-optical
fiber-based demultiplexer
Zacharopoulos, I
Tomkos, I
Syvridis, D
The four wave mixing (FWM) process in nonlinear media can be used for
all optical demultiplexing of high bit-rate optical time division
multiplexed channels. Interaction of the optical time division
multiplexed signal and a pulsed pump with a repetition frequency equal
to the desired output bit-rate, results in generation of a new wave at a
new wavelength which carries the information of one of the
de-multiplexed channels. Dispersion shifted fiber (DSF) is an adequate
nonlinear medium in which the four wave mixing process takes place.
In this work a detailed theoretical study of an all-optical
demultiplexer based on four wave mixing in dispersion shifted fibers is
presented for different demultiplexing input/output bit-rates. The four
wave mixing process in dispersion shifted fibers is studied through
numerical simulation of the non-linear Schroedinger equation, taking
into account ail fiber nonlinearities.
The performance of the demultiplexer is characterized in terms of
efficiency, Q-factor, suppression of adjacent channels and eye pattern
far each de-multiplexed channel. These characteristics are studied for
different fiber lengths, pulsewidths, powers, etc. This detailed
characterization of the operational conditions of the demultiplexer will
reveal its limitations and hints for its optimal design will be
proposed.
(EN)
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