Electronic precompensation techniques to combat dispersion and nonlinearities in optical transmission

Killey, RI; Watts, Philip M.; Glick, M.; Bayvel, Polina

doi:10.1049/cp:20050466

Cited by 17 publications

(6 citation statements)

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“…[3], for non-return-to-zero on-off keying (NRZ-OOK). One should note that SPM-induced distortions can in principle be pre-distorted for at the transmitter [3,4], while it is not possible to implement predistortion to compensate XPM in optically-routed networks [3]. Here, we study the impact of fiber nonlinearities in EPD on four advanced modulation formats and show that phase-encoded signals experience nearly as large an impact from SPM and XPM as intensity-encoded formats when using an EPD transmitter.…”

Section: Introductionmentioning

confidence: 91%

“…The concept of EPD intends to remove optical dispersion compensation (ODC), which is utilized in optical transmission systems to minimize the effects of fiber nonlinearities [2]. As one might expect, putting all the dispersion compensation at the transmitter by using EPD has deep consequences on nonlinear transmission: firstly, self-phase modulation (SPM) forces a reduction in fiber launch power for EPD relative to ODC [3,4]. Secondly, cross-phase modulation (XPM) is not suppressed effectively due to the absence of proper dispersion management in EPD, and, thirdly, large power variations in the pre-distorted waveform result in high data-dependent penalties, as was demonstrated in Ref.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Impact of fiber nonlinearities on advanced modulation formats using electronic pre-distortion

Essiambre¹,

Winzer²

2006

2006 Optical Fiber Communication Conference and the National Fiber Optic Engineers Conference

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Section: Introductionmentioning

confidence: 91%

Section: Introductionmentioning

confidence: 99%

Impact of fiber nonlinearities on advanced modulation formats using electronic pre-distortion

Essiambre¹,

Winzer²

2006

2006 Optical Fiber Communication Conference and the National Fiber Optic Engineers Conference

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“…The use of predistortion, implemented using a dual-drive Mach-Zehnder modulator (Fig 15) was shown to offer effective dispersion compensation of over 1000 km of standard SMF using purely electronic techniques [43][44][45][46][47]. Finally, the method of intradyne coherent detection was experimentally demonstrated to offer the advantages of homodyne techniques, allowing improved receiver sensitivity and effective dispersion compensation in the electronic domain following detection, without the need to phase lock the local oscillator (LO) lasers [48].…”

Section: Electronic Equalisationmentioning

confidence: 99%

“…This is consequently a more cost-effective approach than conventional coherent systems which require optical phase-locked loops (OPLL). The work on electronic equalisation is presented in more detail elsewhere [40][41][42][43][44][45][46][47][48].…”

Section: Electronic Equalisationmentioning

confidence: 99%

Optical networks research at UCL

Appathurai¹,

Benlachtar²,

Duce³

et al. 2006

BT Technol J

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New dynamic optical switching technologies and adaptive transmission techniques will allow increased capacity and flexibility in future core and metro networks. The Optical Networks Group at UCL has carried out research focused on these areas, in collaboration with industry and other university research groups, for over a decade. In this paper, the technical challenges to be overcome in implementing dynamic, high-capacity networks are discussed, and recent results of the group's work are presented. New network architectures based on wavelength-routing and optical burst switching have been proposed and analysed, and the experimental demonstration of burst switching using fast wavelength-tunable lasers is described. High-capacity dense wavelength division multiplexed transmission systems, using advanced regeneration and equalisation techniques, have been studied, both theoretically, and experimentally using a dynamically reconfigurable recirculating fibre loop. Research results on advanced optical signal formats, all-optical 3R regeneration at 40 Gbit/s channel rates, adaptive analogue and digital electronic processing techniques and optical finite impulse response equalisation are presented. Finally, the development of optical performance monitoring technology, a key component of future all-optical networks, is described. The paper concludes with a prediction of future trends in optical communications research.

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“…As a result, significantly lower optical launch powers have to be used in EPD experiments compared to conventional transmission systems in order to reduce the SPM penalty [1,4]. Several simulations have been reported on the influence of cross-phase modulation (XPM) in 10-Gb/s pre-distorted transmission systems [5,6].…”

Section: Introductionmentioning

confidence: 99%