Optical performance monitoring in coherent optical OFDM systems

Area of Science:

• Optical Engineering
• Telecommunications
• Signal Processing

Background:

• Optical performance monitoring is essential for maintaining the integrity and efficiency of optical systems and networks.
• Traditional monitoring methods often require dedicated hardware, increasing system complexity and cost.

Purpose of the Study:

• To introduce a novel approach for optical performance monitoring (OPM) integrated within the receiver signal processing.
• To demonstrate the capability of channel estimation for monitoring critical optical system parameters in coherent-OFDM systems.

Main Methods:

• Utilizing receiver signal processing for channel estimation in coherent-optical-orthogonal-frequency-division-multiplexed (CO-OFDM) systems.
• Developing algorithms to extract key optical parameters directly from the processed signal data.

Main Results:

• Accurate monitoring of fiber chromatic dispersion was achieved.
• Precise estimation of the Q value was demonstrated.
• Reliable measurement of optical signal-to-noise ratio (OSNR) was confirmed.

Conclusions:

• Optical performance monitoring can be effectively performed through receiver-based channel estimation.
• This integrated approach eliminates the need for separate monitoring devices in CO-OFDM systems.
• The proposed method offers a cost-effective and efficient solution for optical network management.