Crosstalk Analysis and Performance Evaluation for Torus-Based Optical Networks-on-Chip Using WDM.

Area of Science:

• Computer Engineering
• Optical Communications
• Network Architecture

Background:

• Insertion loss and crosstalk noise significantly degrade performance in optical networks-on-chip (ONoCs), particularly with wavelength division multiplexing (WDM).
• Evaluating network scalability and performance under these impairments is crucial for designing efficient on-chip communication systems.

Purpose of the Study:

• To propose an insertion loss and crosstalk analysis model for WDM-based torus ONoCs.
• To evaluate the performance and scalability of WDM torus ONoCs employing different optical router designs.

Main Methods:

• Development of a novel analysis model for insertion loss and crosstalk in WDM torus ONoCs.
• Numerical simulations using optimized crossbar and crux optical routers.
• Performance evaluation using OptiSystem and OPNET simulators.

Main Results:

• The crux optical router allows WDM torus ONoCs to scale up to 6x5 or 5x6 before signal degradation.
• Optimized crossbar routers limit WDM torus ONoCs to a 5x4 scale in worst-case scenarios.
• WDM ONoCs with crux routers exhibit superior signal transmission quality and improved end-to-end delay and throughput compared to single-wavelength networks.

Conclusions:

• The proposed analysis model provides a reliable framework for designing and optimizing WDM ONoCs.
• The crux optical router offers better scalability and performance for WDM torus ONoCs.
• WDM technology significantly enhances the performance of ONoCs over single-wavelength approaches.