Investigations of high-speed optical transmission systems employing Absolute Added Correlative Coding (AACC)

Nguyen, Dong-Nhat; Elsherif, Mohamed A.; Malekmohammadi, Amin

doi:10.1016/j.yofte.2016.01.013

Cited by 23 publications

(19 citation statements)

References 24 publications

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“…One of the technologies considered for new next generation passive optical networks is higher order modulation formats. Today long-haul networks, using complex modulation formats, can transmit more than 100 Gbps [77][78][79] in a single optical channel. Mostly quadrature amplitude modulation (QAM) or phase-shift keying (PSK) modulation formats in combination with polarization multiplex are used [80][81][82][83][84].…”

Section: Future Developmentmentioning

confidence: 99%

Passive Optical Networks Progress: A Tutorial

et al. 2020

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For many years, passive optical networks (PONs) have received a considerable amount of attraction regarding their potential for providing broadband connectivity to almost every citizen, especially in remote areas where fiber optics can attract people to populate regions that have been abandoned. Error-free connectivity without dropouts can offer new opportunities to communicate, earn money and enjoy cultural events. Transmission speeds are multigigabit with distances of a few tens of kilometers; these specifications were previously reserved for high-speed and long-haul backbone networks. PONs can also support a new class of applications, such as accurate time transfer or distributed fiber sensing and follow new trends in open networking. An outline of past and current standards and standards that have been proposed for the latest generation of multigigabit PONs is provided.

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Section: Future Developmentmentioning

confidence: 99%

Passive Optical Networks Progress: A Tutorial

et al. 2020

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“…The switching bias voltage of MZM was set to 4 V and its output signal (at 0 dBm) was launched into a 20 km OF, which is the standard SMF link with a dispersion parameter of 17 ps/nm/km representing the fibre-based backbone part. Note that, details of the optical fibre model adopted in this work can be found in [21]. We then have used a FSO transmitter to launch the light beam to the free-space of a 500 m link span, which represents a typical distance in urban areas for access networks.…”

Section: Atmospheric Turbulence Modelmentioning

confidence: 99%

Mitigation of dispersion and turbulence in a hybrid optical fibre and free-space optics link using electronic equalisation

Nguyen

Zvánovec

Ghassemlooy

2019

Optik

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Transmission of a 25 Gbps non-return to zero signal over a hybrid link of 20 km standard single-mode fibre and 500 m free-space optics under weak-to-moderate turbulence regimes is demonstrated via simulation to provide a practical solution for the last-mile access networks. Even though there are several complex mitigating methods to reduce the waveform distortions caused by both the fibre chromatic dispersion and atmospheric turbulence, we provide and discuss a simple approach using an electrical equalizer at the receiver. The simulation results demonstrate that, the proposed equalization technique offer about an order of magnitude improvement in the bit error rate at the received optical power of-20 dBm and a receiver sensitivity gain of 1.5 dB at the 7% forward error correction limit.

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“…The smaller the detuning frequency the higher the bandwidth of the VSB filters to accommodate high-frequency components. Moreover, increasing the optical bandwidth of VSB filter beyond optimal allows much noise to pass through the filter thereby reduce the sensitivity of the receiver [22]. Thus, to implement VSB filtering, the bandwidth of the optical filter and the detuning of the centre frequency had to be optimised.…”

Section: Vestigial Sideband (Vsb) Filteringmentioning

confidence: 99%