Optical performance monitoring in high-speed fiber communication systems based on low-bandwidth delay-tap sampling

Optical performance monitoring (OPM) may play a key role for system management in high-speed optical fiber transmission systems. Delay-tap sampling (DTS) is a simple and effective method for OPM. In this paper, we review our techniques based on low bandwidth DTS to monitor chromatic dispersion (CD) and optical signal to noise ratio (OSNR), which increase the performance while reduce the cost.