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Turning-Up 40G Submarine Networks-The Testing Challenges

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Turning-Up 40G Submarine Networks-The Testing Challenges

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  • Author: Francis Audet, Mai Abou-Shaban
This application note reviews the challenges brought forth by the advent of 40G transmission and describes the importance of each test, as well as where and how they should be performed; what’s more, it examines a case study of a trans-Atlantic dispersion acceptance test that was performed in 2010. From the planning stage to the deployment of an undersea fiberoptic cable, a considerable amount of time, money and resources are invested to ensure the success of a submarine network. Yet one point that is often overlooked during this process, and which can lead to unfortunate delays, is the final acceptance test of the fiber-simply put, this comes down to making sure that the fiber can deliver on the promised and expected bandwidth. This final acceptance test is often ignored since legacy data rates are considered as being extremely challenging to transmit. Yet with the deployment of 40G, newer and more serious challenges are at hand, and in order to face them, they must be understood and properly prepared for.

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