Optical Access Networks: A Comparison Study

Hussien, Mariam; Mohamed, Abdurahman; Hosni, Mohamed I.; Mokhtar, Ayman M.; Youssef, M. M.; Hassan, Kamel M.

doi:10.21608/iceeng.2018.30168

Cited by 3 publications

(1 citation statement)

References 11 publications

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“…The measured BERs can be calculated by using (1) depending on the Q factor and the error function (erfc). The Q-factor can be measured based on the signal to noise ratio (SNR), the electrical bandwidth of the receiver B c and the optical bandwidth B o [33].…”

Section: Resultsmentioning

confidence: 99%

Filterless and Compact ANy-WDM Transmission System Based on Cascaded Ring Modulators

et al. 2022

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To cope with the exponential increase in internet services and corresponding data traffic, especially data centers and access networks require new high data rate transmission methods with low cost, very small package and low energy consumption. In this paper, we demonstrate a filterless, agnostic Nyquist wavelength division multiplexing (ANy-WDM) transmission system based on cascaded ring modulators and a comb source. The single ring modulator acts as a filter, filtering one of the n WDM lines, generated by the comb. The same ring modulator modulates k time division multiplexed (TDM) channels on the single wavelength. Since each WDM channel, consisting of k time domain channels, has a rectangular bandwidth, the aggregated symbol rate of the superchannel modulated by this system corresponds to the optical bandwidth of all n WDM channels together. The approach is very simple and compact. Since no optical filters, delay lines or other special photonics or high bandwidth electronics is needed, an integration into any photonics platform is straightforward. Thus, the proposed method might enable very compact, ultrahigh data rate transmission devices for future data centers and access networks.INDEX TERMS Integrated photonics, Nyquist transmission, ring modulators, WDM.

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Section: Resultsmentioning

confidence: 99%

Filterless and Compact ANy-WDM Transmission System Based on Cascaded Ring Modulators

et al. 2022

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Technical–economic analysis to identify the acceptable maximum attenuation on PON FTTH lines for wholesale network operators

Mazzei,

Crescitelli,

Fioramanti

et al. 2023

Sci Rep

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Telecommunications companies are constantly chasing continuous technological advances with their management methods of Operations & Maintenance (O&M) that still struggle to turn their eye toward innovation and simplification of processes. In a future that aims at fully fiber-optic networks, the objective of the research is to propose guidelines and provide data to support the Wholesale Operator for the definition of the acceptable attenuation threshold on the Passive Optical Network Fiber-To-The-Home (PON FTTH) infrastructure to determine the Service Level Agreements (SLA) to be contracted with Retail Operators. Following exceeding the threshold, the Retail Operator has the right to open a Trouble Ticket to request the resolution of the anomaly. Consequently, the definition of the attenuation threshold strongly affects the number of Trouble Tickets to be managed and the related costs the Wholesale Operator bears. This paper analyzes a specific case of the PON FTTH network of the Italian wholesale operator Open Fiber. The studied infrastructure, with a length of 11 km, allows a maximum attenuation of 37 dB without degrading the service. An economic model has been proposed to assess the cost impact of moving the attenuation threshold in the SLA.

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Compact, Energy Efficient Simultaneous Transmission of Analog and Different Digital Signals With a Single Ring Modulator

Hosni,

Mandalawi,

Meier

et al. 2024

IEEE Photonics J.

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Optical Access Networks: A Comparison Study

Cited by 3 publications

References 11 publications

Filterless and Compact ANy-WDM Transmission System Based on Cascaded Ring Modulators

Filterless and Compact ANy-WDM Transmission System Based on Cascaded Ring Modulators

Technical–economic analysis to identify the acceptable maximum attenuation on PON FTTH lines for wholesale network operators

Compact, Energy Efficient Simultaneous Transmission of Analog and Different Digital Signals With a Single Ring Modulator

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