Field trial at 40 Gbit/s over 28.6 and 86 km of standard singlemode fibre using quaternary dispersion supported transmission

Idler, W.; Franz, B.; Schlump, D.; Wedding, B.; Ramos, A.J.

doi:10.1049/el:19981600

Cited by 13 publications

(3 citation statements)

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“…2 for the quaternary signal whose power levels at the receiver input corresponding to the '0', '1 ', '2' and '3' symbols are P0 (lower power level), P1, P2 (intermediate levels) and P3 (higher power level) respectively, with P2 A P3 and P1 = C P3 where A and C are the parameters to be optimized. The extinction ratio is defined by r=- (2) P3 in accordance to Ref. 7.…”

Section: -Optical Receiver and Bit Error Probability Calculationmentioning

confidence: 99%

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Optimization of level spacing in quaternary optical communication systems

Rebola

Cartaxo

2000

SPIE Proceedings

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In this work, the optimization of level spacing in terms of the extinction ratio variation in quaternary optical communication systems is investigated, for signal-dependent noise dominance. It is shown that the performance of optically preamplified quaternary communication systems can be optimized in terms of levels spacing using very simple formulas, also derived in this work. For the null extinction ratio, sensitivity improvements of about 6 dB can be achieved by proper location of signal levels in comparison with the sensitivity of equally spaced levels. At high extinction ratio, this improvement is not so significant.

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Section: -Optical Receiver and Bit Error Probability Calculationmentioning

confidence: 99%

“…The extinction ratio definition used in Ref. 5 corresponds to the inverse of expression (2). So r = 0 corresponds to an infinite extinction ratio in Ref.…”

Section: -Optical Receiver and Bit Error Probability Calculationmentioning

confidence: 99%

Optimization of level spacing in quaternary optical communication systems

Rebola

Cartaxo

2000

SPIE Proceedings

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“…The main characteristics of the MQW-DFB laser in the context of DST are: a -3dB bandwidth of 8GHz for a bias current level of 7OmA, a threshold current of Ih=l4.4mA, and a FM-efficiency of EFM=3O4MHZ/mA at a bias current of 5OmA. (5) where DL is the total first order fiber dispersion, f is the low-pass equivalent frequency and c is the speed of light. No fiber nonlinearities are considered in this paper.…”

Section: Flh(t)mentioning

confidence: 99%

Influence of dispersion propagation regime on the dispersion-supported transmission performance

Morgado¹,

Cartaxo²

2000

SPIE Proceedings

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This paper investigates, through semi-analytical simulation, the feasibility of the application of the dispersion supported transmission technique in the normal dispersion regime for the first time. It is shown that, in case of normal propagation regime, the dispersion supported transmission technique operated at 4OGbit/s can improve the system sensitivity by about 7dB relative to anomalous propagation regime. This improvement is achieved due to a significant increase of eye diagram opening, which happens at lower total fiber dispersion, and with greater -3dB bandwidth frequency of first order equalizer filter at receiver than in the anomalous regime. It is shown that these conclusions are consistent with analysis performed utilizing the amplitude and delay distortions of the system transfer function.

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Dispersion Management

2010

Fiber‐Optic Communication Systems

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Field trial at 40 Gbit/s over 28.6 and 86 km of standard singlemode fibre using quaternary dispersion supported transmission

Cited by 13 publications

References 1 publication

Optimization of level spacing in quaternary optical communication systems

Optimization of level spacing in quaternary optical communication systems

Influence of dispersion propagation regime on the dispersion-supported transmission performance

Dispersion Management

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