Comparing DMT Variants in Medium-Reach 100G Optically Amplified Systems

Pilori, Dario; Fludger, C.R.S.; Gaudino, Roberto

doi:10.1109/jlt.2016.2562260

Cited by 23 publications

(16 citation statements)

References 13 publications

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“…Unfortunately, in this experiment, it has not been possible to further increase the cascading of more OAD nodes. Due to the different filtering elements and the associated noise accumulation, the maximum achievable OSNR was limited [21]. Thus, it was not Table 1 shows the maximum achievable net data rate at different transmission distances for the considered scenarios adopting RA BL/PL.…”

Section: Resultsmentioning

confidence: 99%

“…Thus, it was not possible to retrieve results after 75 km with the OAD nodes. However, to target metro network distances, the system can be improved considering other alternatives such as DMT with SSB or VSB modulation [20,21] with DD. In [24], a multi-band SSB-DD system has been studied for a metro-regional network.…”

Section: Resultsmentioning

confidence: 99%

“…This is due to the possibility of controlling the SOA current to face the transmission impairments. These impairments include the losses due to the fiber links, the SOAs as well as the WDM elements or the splitter/combiners used in the experiments [21]. These losses can be up to 4 dBm for each WDM element.…”

Section: Discussionmentioning

confidence: 99%

“…To design the optoelectronic front-ends for an S-BVT, we can consider simple architectures using Direct Detection (DD) receivers. Several possibilities considering the DMT modulation can be used including Single Side Band (SSB) or Vestigial Side Band (VSB) modulations [5,21] On the other hand, we can adopt more complex S-BVT using coherent detection, also combined with simple DMT transmission, as it has been demonstrated in [7]. For the experiments, we consider a single BVT.…”

Section: S-bvt Architectures Tailored For Optical Metro Networkmentioning

confidence: 99%

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Programmable Adaptive BVT for Future Optical Metro Networks Adopting SOA-Based Switching Nodes

et al. 2018

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Adaptive Sliceable-Bandwidth Variable Transceivers (S-BVTs) are key enablers for future optical networks. In particular, those based on Discrete MultiTone (DMT) modulation and Direct Detection (DD) can be considered a flexible solution suitable to address the cost efficiency requirement of optical metro networks. In this paper, we propose to use a cost-effective S-BVT option/implementation in optical metro networks adopting switching nodes based on Semiconductor Optical Amplifier (SOA) technology. Bit loading (BL) and power loading (PL) algorithms are applied to the Digital Signal Processing (DSP) modules, to maximize the performance and/or the capacity as well as enhance the flexibility and adaptability of the system. Our analysis considers switching nodes based on SOAs with and without filtering elements and fiber spans of 25 km. We present the results up to 100 km, with and without SOA-based nodes. Firstly, we analyze the adaptive BVT transmission using the Margin Adaptive (MA) BL/PL algorithm at a fixed bit rate of 28 Gb/s. The possibility of controlling the SOAs current is a key factor to face the transmission impairments due to the fiber and the filtering elements. We also analyze the system considering Rate Adaptive (RA) transmission at a fixed target Bit Error Rate (BER) of 3.8 × 10 −3 , showing that a maximum capacity above 34 Gb/s can be achieved for a single span of 25 km. Although the cascading of filtering elements still constitutes a limiting factor, we show that an improvement of the net bit rate performance can be obtained thanks to the combined use of BVT and SOA technology at the switching nodes, resulting in a promising approach for designing future optical metro networks.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: S-bvt Architectures Tailored For Optical Metro Networkmentioning

confidence: 99%

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Programmable Adaptive BVT for Future Optical Metro Networks Adopting SOA-Based Switching Nodes

et al. 2018

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“…To increase the spectral efficiency of these links, higher-order modulations formats have been proposed [11,12]. Recently, different direct detection schemes have been investigated for advanced short reach applications such as orthogonal frequency-division multiplexing (OFDM) [13,14], multitone (DMT) modulation [15,16], Pulse amplitude modulation (PAM) [17][18][19], and CAPmodulation [20,22].…”

Section: Introductionmentioning

confidence: 99%

Toward 1.8 Tb/s CAP Schemes for Short Reach Optical Communication Systems

Majeed

Fyath

2017

TNC

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Wavelength-division multiplexed (WDM)carrierless amplitude/phase (CAP) modulation is proposed for1.8 Tb/sfor short reach optical communication system. The system uses 16 channels, each operates at 112 Gb/s. A single-band (SB) CAP and multiband (MB) CAP are adopted for each channel as advanced modulation format with high spectral efficiency. The system performance at C and O operating bandsare investigated withchannel spacing of 100 GHz.The system is simulated using OptiSystem14.0 software package and the results reveal that the maximum allowable distance at BER of 〖10〗^(-3) is 3.45km and 2.11 km for SB-CAP and MB-CAP operating at C-band with 0 dB laser power, respectively. These values to be compared with 4.5 km and 1.8 km, respectively, for O-band operation.

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