Electrical dispersion compensation at 10Gb/s optical single sideband transmission systems

Silveira, T.; Ferreira, A.; Monteiro, Paulo P.; Violas, Manuel; Ribeiro, Rui; Rocha, J. da; Teixeira, L.

doi:10.1109/leos.2004.1363461

Cited by 9 publications

(7 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Optical duobinary [1], optical differential quadrature phase shift keying [2], and optical singlesideband (OSSB) signals [3][4][5][6] have been proposed as advanced optical modulation formats due to enhanced spectral efficiency compared to the conventional modulation format (on-off keying), reducing the degradation caused by optical-fiber dispersion on the signal performance. Among these formats, the OSSB presents the advantage of reducing the required bandwidth by suppressing one of the sidebands of multi-level intensity modulation double-sideband signals.…”

Section: Introductionmentioning

confidence: 99%

“…Among these formats, the OSSB presents the advantage of reducing the required bandwidth by suppressing one of the sidebands of multi-level intensity modulation double-sideband signals. More important, in the case of reduced grooving of the suppressed sideband due to four-wave mixing and negligible laser phase drift, the suppression of one sideband allows the efficient use of simple electrical dispersive circuits at the receiver [3,4] or transmitter side [5] to compensate for the fiber dispersion accumulated along the transmission. However, sideband suppression leads to intensity distortion in systems using direct detection, even in a back-to-back situation [5,7].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Eye Opening Degradation due to Sideband Suppression in Direct Detection Systems for Different Signaling Formats

Fonseca

Cartaxo

2011

Fiber and Integrated Optics

View full text Add to dashboard Cite

The intensity distortion resulting from sideband suppression in direct detection systems is investigated analytically and through numerical simulation for unipolar binary and alternate mark inversion formats. A method to calculate the sequence leading to the highest eye opening penalty is proposed, based on the characterization of the distortion originated by the Hilbert transform of an isolated pulse and constructive/destructive addition of the distortions of pulses in different time slots. The application of the proposed method to a practical transmitter is assessed, and accurate results are shown for signals without complete sideband suppression.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Eye Opening Degradation due to Sideband Suppression in Direct Detection Systems for Different Signaling Formats

Fonseca

Cartaxo

2011

Fiber and Integrated Optics

View full text Add to dashboard Cite

show abstract

“…Methods of mitigating such effect have been developed recently, allowing the increase of the channel bit rate or transmission distance without optical dispersion compensation. Among these, optical single sideband (OSSB) modulation enhances dispersion tolerance due to: reduction of the required optical bandwidth by a factor of 2 and electrical dispersion compensation (EDC) can be used after direct detection of carrier-unsuppressed optical signals [1]- [2]. This paper presents an alternative implementation of EDC using OSSB signals, increasing the efficiency of dispersion mitigation after compensation.…”

Section: Introductionmentioning

confidence: 99%

“…Different realizations to obtain H eq (f) are exploited in [1]. In the simplest case, the EDC can be a simple electrical dispersive line.…”

Section: Introductionmentioning

confidence: 99%

Highly efficient electrical dispersion compensation scheme for optical single sideband systems

Fonseca

Cartaxo²,

Monteiro³

2005

2005 IEEE LEOS Annual Meeting Conference Proceedings

Self Cite

View full text Add to dashboard Cite

show abstract

“…Tu.Al.2 after 80 km of SSMF; on the other hand, oSSB polar RZ allows transmission over 160 km with Q-factor higher than6 for the 50 GHz grid, and higher than 7 for the 100 and 200 GHz grids. These results present oSSB polar RZ systems as very strong candidates to robust DWDM networks.…”

mentioning

confidence: 99%

40 Gb/s Optical Single Sideband DWDM Transmission System using Polar Return-to-Zero Signalling Format

Ferreira

Silveira

Monteiro

et al. 2007

2007 9th International Conference on Transparent Optical Networks

View full text Add to dashboard Cite

Optical single sideband (oSSB) 40 Gb/s transmission systems using binary polar coded return-to-zero (RZ) pulse shape are proposed to enable dense wavelength division multiplexing networks employing efficient electrical dispersion compensation (EDC). The detuning of ITU 50, 100, and 200 GHz grids optical filters is optimized by simulation. In presence of optical fibre and EDC, polar RZ oSSB clearly surpasses common nonreturn-to-zero oSSB for all the considered grids. After 160 km of standard single mode fibre, polar RZ retrieves Q-factors above 6 for the 50 GHz grid and above 7 for the remaining grids; whereas NRZ Q-factor is never superior to 3 after only 80 km. Keywords: signalling format, electrical dispersion compensation (EDC), optical single sideband (oSSB), optical communication systems, dense wavelength division multiplexing (DWDM). INTRODUCTIONThe increasing offer of broadband applications is leading to higher transmission bandwidth requirements. This demand can be satisfied by dense wavelength division multiplexing (DWDM) core networks; these offer high capacity and long reach transmission. Advanced modulation formats are essential to the cost-efficiency of DWDM networks. Among these, differential binary phase shift keying (DPSK) [1], differential quadrature phase shift keying (DQPSK)[2], duobinary [3], carrier-suppressed return-to-zero (CS-RZ) [4], and optical single sideband (oSSB)[5] have presented promising characteristics.Optical SSB allows DWDM channel density increase and improved tolerance to group velocity dispersion (GVD) due to the suppression of one of the signal sidebands. Moreover, efficient electrical dispersion compensation (EDC) can be combined with direct detected (DD) oSSB signals to further mitigate the effects of GVD. Simple EDC methods have been proposed with results at 10 Gb/s and 40 Gb/s, such as simple dispersive lines, adaptive filters, or Butterworth filters [5]- [8]. EDC can be used as a stand alone technique or to minimize residual dispersion arising from mismatched optical dispersion compensation.The combination of optical SSB modulation, coding formats and the return-to-zero (RZ) pulse shape has been proposed to enhance the system performance due to enhanced tolerance to intersymbol interference (ISI) of RZ shape. Promising results have been recently presented in [9], where polar coding and RZ pulse shape are combined with carrier-unsuppressed oSSB signals at 10 Gb/s. The proposed transmitter enables improved receiver sensitivity and transmission distances when compared to a common non-return-to-zero (NRZ) oSSB system. In this work, polar RZ signalling is explored for the first time at 40 Gb/s. The potential of the generated oSSB signal for inclusion in the 200 GHz, 100 GHz and 50 GHz ITU grids is assessed in back-to-back situation and after fibre transmission and EDC. The results are compared with those obtained by common oSSB-NRZ.

show abstract

Electrical dispersion compensation at 10Gb/s optical single sideband transmission systems

Cited by 9 publications

References 2 publications

Eye Opening Degradation due to Sideband Suppression in Direct Detection Systems for Different Signaling Formats

Eye Opening Degradation due to Sideband Suppression in Direct Detection Systems for Different Signaling Formats

Highly efficient electrical dispersion compensation scheme for optical single sideband systems

40 Gb/s Optical Single Sideband DWDM Transmission System using Polar Return-to-Zero Signalling Format

Contact Info

Product

Resources

About