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Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping

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Wavelength-division-multiplexing optical packet switch with heterogeneous wavelength conversion capabilities.

Yoon-Ho Choi¹, Seung-Woo Seo, Han-You Jeong

¹School of Electrical Engineering and Computer Sciences, Seoul National University, Seoul 151-744, South Korea.

|December 7, 2007

Summary

This study introduces a new control algorithm for wavelength-division-multiplexing (WDM) optical packet switches (OPS) that efficiently uses heterogeneous wavelength converter blocks (HeWCBs). The approach minimizes packet loss and reduces the need for high-degree wavelength converters.

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Area of Science:

Telecommunications Engineering
Computer Networking
Optical Communications

Background:

Wavelength-division-multiplexing (WDM) optical packet switches (OPS) aim for efficient wavelength converter (WC) utilization.
Shared-per-node architectures are explored for optimizing WC usage in WDM OPS.

Purpose of the Study:

To propose a novel switch control algorithm for WDM OPS architectures.
To leverage heterogeneous WC blocks (HeWCBs) with varying wavelength conversion degrees (WCDs).

Main Methods:

Development of a new switch control algorithm tailored for shared-per-node WDM OPS.
Implementation of heterogeneous WC blocks (HeWCBs) comprising WCs with diverse WCDs.
Performance evaluation focusing on WC count and packet loss due to wavelength contention.

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Main Results:

The proposed algorithm effectively reduces the number of WCs requiring higher wavelength conversion degrees.
Packet loss resulting from wavelength contention at outbound links is minimized.
Demonstrated efficiency of HeWCBs in WDM OPS architectures.

Conclusions:

The novel control algorithm enhances WDM OPS performance by utilizing HeWCBs.
This approach offers a practical solution for optimizing WC resources and reducing packet loss in optical networks.