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What is Coupler

Chapter 5
Design, Implementation, and Analysis of Next Generation Optical Networks: Emerging Research and Opportunities
Coupler is a passive optical device that is utilized to aggregate and distribute signals in an optical network, but it can support multiple inputs and outputs. For example, a 2x2 coupler gets a fraction of the power from the first input and gives it on output 1 and the remaining fraction on output 2 (similar goes for the second input).
Published in Chapter:
Challenges in Future Intra-Data-Center Networks and Possible Solutions
Muhammad Ishaq (Pakistan Institute of Research and Development, Pakistan), Mohammad Kaleem (COMSATS University – Islamabad, Pakistan), and Numan Kifayat (KAIST, South Korea)
Copyright: © 2020 |Pages: 43
DOI: 10.4018/978-1-5225-9767-4.ch005
Abstract
This chapter briefly introduces the data center network and reviews the challenges for future intra-data-center networks in terms of scalability, cost effectiveness, power efficiency, upgrade cost, and bandwidth utilization. Current data center network architecture is discussed in detail and the drawbacks are pointed out in terms of the above-mentioned parameters. A detailed background is provided that how the technology moved from opaque to transparent optical networks. Additionally, it includes different data center network architectures proposed so far by different researchers/team/companies in order to address the current problems and meet the demands of future intra-data-center networks.
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