Analysis of Erbium Doped Fiber Amplifier Transients in Dynamically Configurable Optical Networks

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Supervisor:
Dr. Heszberger Zalán Tamás
Department of Telecommunications and Media Informatics

The 1991 introduction of Erbium Doped Fiber Amplifiers (EDFAs), capable of efficient amplification in the optical domain, greatly improved the capabilities of optical networks, enabling the deployment of large-distance, high-bandwidth transparent optical networks.

The increasing bandwidth demand was fulfilled by wavelength-division multiplexed (WDM) systems carrying numerous optical channels on the same fiber. EDFA has become the most common amplifier type in today’s optical networks due to its advantages in multichannel systems.

The next milestone in all-optical networks is expected to be dynamic configurability making the transient behavior of the EDFAs’ a key problem, as power fluctuations can reduce the stability of the system or damage subsequent sensitive components. In my essay I examine the EDFAs’ response to varying input and form design rules for common configurations.

I analyze the EDFA transients for different conditions through computer simulations using VPItransmissionMaker™ Optical Systems, and introduce switching limits for dynamic operation in order to control power fluctuations in the system.

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