Mode-Multiplexed 6⨉20-GBd QPSK Transmission over 1200-km DGD-Compensated Few-Mode Fiber

Randel, S.; Ryf, Roland; Gnauck, A.H.; Mestre, M. A.; Schmidt, C.; Essiambre, R.-J.; Winzer, Peter J.; Delbue, R.; Pupalaikis, Peter J.; Sureka, A.; Sun, Yi; Jiang, Xinli; Lingle, Robert

doi:10.1364/ofc.2012.pdp5c.5

Cited by 40 publications

(21 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To minimize random mode coupling, it is possible to design a FMF with large effective refractive index difference. However, with mode coupling, the CIRS could be much larger as was shown in a reported experiment [7]. In this paper, the CIRS and required equalizer tap length for DMGD-compensated links with weak mode coupling is investigated analytically and numerically.…”

Section: Introductionmentioning

confidence: 70%

See 1 more Smart Citation

Equalizer tap length requirement for mode group delay-compensated fiber link with weakly random mode coupling

Bai

2014

Opt. Express

View full text Add to dashboard Cite

The equalizer tap length requirement is investigated analytically and numerically for differential modal group delay (DMGD) compensated fiber link with weakly random mode coupling. Each span of the DMGD compensated link comprises multiple pairs of fibers which have opposite signs of DMGD. The result reveals that under weak random mode coupling, the required tap length of the equalizer is proportional to modal group delay of a single DMGD compensated pair, instead of the total modal group delay (MGD) of the entire link. By using small DMGD compensation step sizes, the required tap length (RTL) can be potentially reduced by 2 orders of magnitude.

show abstract

Section: Introductionmentioning

confidence: 70%

“…However, the off-center splicing introduces mode-dependent loss which degrades the system performance. The fourth approach is using DMGD-compensated fiber [4][5][6][7]. In a DMGD-compensated fiber link, two types of fibers are spliced together.…”

Section: Introductionmentioning

confidence: 99%

Equalizer tap length requirement for mode group delay-compensated fiber link with weakly random mode coupling

Bai

2014

Opt. Express

View full text Add to dashboard Cite

show abstract

“…Over the last few years the modal dispersion of FMF significantly reduced and it is expected that this trend will continue. In [7], the modal dispersion parameter between LP 01 and LP 11 was 27 ps/km, after a few months the effective DGD decreased to less than 50 ps for 30 km with the help of cascading two fibers with both 1.5 ns DGD but in one of them LP 01 travels faster, in the other one LP 11 [4].…”

Section: Introductionmentioning

confidence: 99%

“…Types of MMF in which only a few modes are supported, i.e., few mode fibers (FMF), have attracted a lot of attention in the recent years [1][2][3]. In [4], the transmission over 1200 km of differential group delay (DGD) compensated FMF with three-fold modemultiplexing has been demonstrated. The FMF transmission research is looking into optical amplification as well to achieve longer transmission distances [5].…”

Section: Introductionmentioning

confidence: 99%

“…Although most of the papers on FMF transmission until now [4,6,7] use three fold multiplexing, considering fibers with two linearly polarized modes (LP 01 , LP 11 ), it is desired to increase the number of modes to further increase fiber capacity [9]. Recently, we reported the complexity comparison of various equalization schemes of coherent receivers for both blindly adapted and training symbol (TS) based approaches with respect to the equalization of modal dispersion and crosstalk for a 6 x 6 mode multiplexed receiver [10].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

DSP complexity of mode-division multiplexed receivers

Inan¹,

Spinnler²,

Ferreira³

et al. 2012

Opt. Express

113

View full text Add to dashboard Cite

The complexities of common equalizer schemes are analytically analyzed in this paper in terms of complex multiplications per bit. Based on this approach we compare the complexity of mode-division multiplexed digital signal processing algorithms with different numbers of multiplexed modes in terms of modal dispersion and distance. It is found that training symbol based equalizers have significantly lower complexity compared to blind approaches for long-haul transmission. Among the training symbol based schemes, OFDM requires the lowest complexity for crosstalk compensation in a mode-division multiplexed receiver. The main challenge for training symbol based schemes is the additional overhead required to compensate modal crosstalk, which increases the data rate. In order to achieve 2000 km transmission, the effective modal dispersion must therefore be below 6 ps/km when the OFDM specific overhead is limited to 10%. It is concluded that for few mode transmission systems the reduction of modal delay is crucial to enable long-haul performance.

show abstract

Advanced Modulation and Multiplexing Techniques

Djordjević

2017

Advanced Optical and Wireless Communications Systems

View full text Add to dashboard Cite

Mode-Multiplexed 6⨉20-GBd QPSK Transmission over 1200-km DGD-Compensated Few-Mode Fiber

Cited by 40 publications

References 0 publications

Equalizer tap length requirement for mode group delay-compensated fiber link with weakly random mode coupling

Equalizer tap length requirement for mode group delay-compensated fiber link with weakly random mode coupling

DSP complexity of mode-division multiplexed receivers

Advanced Modulation and Multiplexing Techniques

Contact Info

Product

Resources

About