Optical filters for adaptive compensation of chromatic dispersion in high-speed optical transmission systems

The increasing of transmission speed in optical fiber allows decreasing transmission cost of one bit of information. But with growth of transmission speed in optical communication line the efficacy of chromatic dispersion to signal grows accordingly. The most promising method of dispersion compensation is the adaptive signal processing in optical area. Methods of synthesis of integrated adaptive filters, which consist of Mach-Zehnder interferometers and ring resonators, are considered in this article. The relationship between a delay-line length of a filter and parameters of channel and line link which allows determining a minimum permissible length of the filter delay-line is established. Comparison of infinite impulse response filter and finite impulse response filter by complexity of implementation is performed.