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High-density wavelength switching obtained from a tunable multisection laser diode.

A Fischer¹, J P Goedgebuer, H Porte

¹Laboratoire d'Optique P. M. Duffieux, Unité Mixte de Recherche Centre National de Recherche Scientifique 6603, Université de Franche-Comté, 25030 Besançon Cedex, France.

|December 13, 2007

Summary

This study introduces a novel wavelength switching method using a tunable laser diode. This technique enables high-density signal routing by converting time-multiplexed data into wavelength-multiplexed signals.

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Area of Science:

Photonics and Optical Communications
Semiconductor Device Physics

Background:

Efficient signal routing is crucial for high-capacity optical networks.
Current wavelength switching technologies face limitations in density and speed.

Purpose of the Study:

To present a new method for high-density wavelength switching.
To demonstrate the application of this method in optical signal routing.

Main Methods:

Utilizing a 1550-nm wavelength-tunable multielectrode laser diode.
Implementing electrical feedback to induce multistability in wavelength.
Operating the system as a multistable device with multiple wavelength steady states.

Main Results:

Achieved high-density wavelength switching.

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Successfully converted time-multiplexed packets into wavelength-multiplexed signals.

Demonstrated the multistable operation of the laser diode system.

Conclusions:

The proposed method offers a viable solution for advanced optical signal routing.
Multistability in wavelength provides a robust mechanism for dense wavelength switching.
This technique has potential applications in future high-speed optical communication systems.