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WDM transmission of 400 Gbps and beyond using multi-band OFDM & Nyquist-WDM

Abstract : In the context of ever increasing traffic demand, future long-haul optical transmission systems will evaluate towards higher capacity and will be able to support more flexible optical networking. In this thesis, we study the potential of multi-band OFDM, which is a credible alternative of the industrial single-carrier solutions for future generations of beyond 100 Gbps systems. After presenting a brief overview of long-haul transmission systems and OFDM digital signal processing techniques, we show the experimental implementation of 16QAM-OFDM as well as its transmission performance. Some implementation constraints of 16QAM-OFDM related to hardware impairments have been investigated. The transmission performance has been compared with that of Nyquist-WDM format. After that, in the context of superchannel and flexible optical networking, we have carried out an experimental proof-of-concept of sub-wavelength optical switching. We have demonstrated the feasibility of such optical add-drop operations inside OFDM and Nyquist-WDM superchannels. At last, we have addressed some short-term research topics that concern telecom companies, such as the potential application scenarios of the low-cost and power-efficient coherent CFP interface based on Silicon photonics integration technology.
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Submitted on : Wednesday, June 22, 2022 - 12:35:10 PM
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  • HAL Id : tel-03701644, version 1


Mengdi Song. WDM transmission of 400 Gbps and beyond using multi-band OFDM & Nyquist-WDM. Networking and Internet Architecture [cs.NI]. Télécom ParisTech, 2016. English. ⟨NNT : 2016ENST0059⟩. ⟨tel-03701644⟩



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