Integrated model for performance analysis of all-optical multihop packet switches

Area of Science:

• Optical communication networks
• Information theory
• Computer engineering

Background:

• All-optical packet switching systems are critical for high-speed data transmission.
• System performance is typically evaluated by switching latency and packet loss rate.
• In real-time applications, packet loss rate is the dominant performance metric.

Purpose of the Study:

• To develop a novel analysis model for packet loss rate in all-optical packet switches.
• To incorporate both hardware limitations and physical impairments into the model.
• To accurately predict system performance considering complex interactions.

Main Methods:

• Developed an estimation model for signal quality degradation in multihop paths.
• Constructed an equivalent analysis model for switching networks to evaluate average bit error rate.
• Proposed an integrated model for packet loss rate estimation in three distinct multihop packet switch architectures.
• Derived bounds on packet loss rate attributed to bit errors.

Main Results:

• The proposed analysis model accurately reflects interactions between physical impairments and system parameters.
• An accurate estimation of average bit error rate was achieved.
• Bounds on packet loss rate induced by bit errors were mathematically derived.
• Simulation studies validated the model's predictive accuracy for system performance.

Conclusions:

• The developed integrated model provides a robust method for evaluating packet loss rate in all-optical packet switches.
• The model's ability to predict performance under physical impairments is crucial for system design.
• This research contributes to optimizing the performance of real-time optical networking.