Coherent Optical Access Networks

Rohde, Harald; Smolorz, Sylvia; Wey, Jun Shan; Gottwald, E.

doi:10.1364/ofc.2011.otub1

Cited by 49 publications

(25 citation statements)

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“…Coherent ultra-dense wavelength division multiplexing passive optical networks (UDWDM-PON), provide inherent high wavelength selectivity and enhanced sensitivity, allowing high number of users in extended reach optical distribution networks (ODNs) [1,2]. Coherent technology with advanced modulation formats and Nyquist pulse shaping, has demonstrated several technical highlights, such as excellent spectral efficiency with high aggregated capacity, easier network upgrade and future-proof solution for flexible bandwidth next generation optical access networks (NG-OAN) [3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Coherent ultra dense wavelength division multiplexing passive optical networks

Shahpari

Ferreira

Ribeiro

et al. 2015

Optical Fiber Technology

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Section: Introductionmentioning

confidence: 99%

Coherent ultra dense wavelength division multiplexing passive optical networks

Shahpari

Ferreira

Ribeiro

et al. 2015

Optical Fiber Technology

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“…Secondly, seamless upgrade of TDMA-PONs must be attained, with compatibility with existing network infrastructure (possibly, with no modification). It has been suggested that optical coherent technologies, similar to those developed for the core networks, could be used to this aim [2], [3]. However the expensive optical and electronic components cannot simply scale down in cost, to meet the cost requirements of common users of the access networks.…”

Section: Introductionmentioning

confidence: 99%

Low cost coherent receivers for UD-WDM NRZ systems in access networks

Presi

Bottoni

Corsini

et al. 2014

2014 16th International Conference on Transparent Optical Networks (ICTON)

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This paper presents the first experimental achievements of the COCONUT project which aims at demonstrating ultra-dense Wavelength Division Multiplexing Passive Optical Networks (udWDM-PON) by means of low-cost coherent solutions. COCONUT should exploit low-cost optical components and simple electronics so that the cost of typical line terminals would be affordable to the end-users. Among different technical approaches considered within the project; we focus here on the solutions based on simple OOK-NRZ format. We developed an original improvement of the conventional phase-diversity coherent detection schemes providing for polarization independent operations without doubling the receiver structure. As a result we demonstrated that passive networks of high-power budget (> 45 dB i.e. up to 60 km reach and more than 64-way power splitting) are feasible over a 6.25 GHz grid by using a limited number of photodiodes a simplified analog processing and free-running DFBs

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“…Secondly, seamless upgrade of TDMA-PONs must be attained, with compatibility with existing network infrastructure and, possibly, no modification of the last. It has been suggested that optical coherent technologies, similar to those developed for the core networks, could be used to this aim [3], [4]. However the expensive optical and electronic components cannot simply scale down in cost, to meet the cost requirements of common users of the access networks.…”

Section: Introductionmentioning

confidence: 99%

Towards ultra-dense wavelength-to-the-user: The approach of the COCONUT project

Prat

Angelou

Kazmierski

et al. 2013

2013 15th International Conference on Transparent Optical Networks (ICTON)

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This paper presents the high-level COCONUT architecture of an optical access network based on coherent technology, supporting ultra-dense Wavelength Division Multiplexing (WDM). The COCONUT network should allow for seamless evolution from present PON architectures, but also support new emerging applications such as mobile back-haul and front-haul. Coherent techniques will hence allow serving a higher number of users, thanks to ultra-dense WDM, and reaching higher power budget, thanks to higher sensitivity. These features should allow for economy of scale and network consolidation. Although coherent solutions are well-developed for core networks, the prohibitive cost of their optical and electronic parts makes them unsuitable for the massive deployment of access networks. To this aim, COCONUT will address realization of coherent transmitter/receivers exploiting low-cost components and simple electronics, so that the cost of typical line terminals would be affordable to the end-users. The paper presents an overview of the target results and key issues that are addressed by the COCONUT partners.

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Coherent Optical Access Networks

Cited by 49 publications

References 0 publications

Coherent ultra dense wavelength division multiplexing passive optical networks

Coherent ultra dense wavelength division multiplexing passive optical networks

Low cost coherent receivers for UD-WDM NRZ systems in access networks

Towards ultra-dense wavelength-to-the-user: The approach of the COCONUT project

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