Fast first-order PMD compensation with low insertion loss for 10 Gbit/s system

Sobiski, D.; Pikula, Dragan; Smith, James A.; Henning, C.; Chowdhury, D.Q.; Murphy, E.; Kolltveit, E.; Annunziata, Frank

doi:10.1049/el:20010057

Cited by 16 publications

(4 citation statements)

References 3 publications

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“…Some technologies, like fiber Bragg gratings, allow to realize a variable DGD in the compensator [11,23,24,25], which has the potential to avoid trapping in local maxima [26]. In a combined feed-forward/feedback adaptation scheme a proper setting of the DGD element was demonstrated thanks to a polarisation scrambler at the input of the line that enables the compensator to extract the actual DGD from the received signal polarization spectrum [23].…”

Section: Improved Concepts For Optical Pmd Compensatorsmentioning

confidence: 99%

PMD compensation techniques

Bülow

Lanne²

2004

J Optic Comm Rep

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Mitigating PMD is still a challenge in today's optical communications. After giving the key performance indicators dictated by the statistical nature of PMD, we introduce the classification of PMD compensation schemes into 2 categories: optical and electrical PMD compensators. In a first part, we explain the operation principle of a PMD compensator by taking a detailed look at the basic optical PMD compensator and appropriate feedback signals. More complex multistage structures and a feed-forward adaptation approach are also discussed. This first part is closed by results from a oneyear field trial confirming the behavior and performance of a prototype compensator. In the second part of this article, electronic equalization for PMD mitigation is explained. Starting with a discussion on performance and adaptation of linear equalizers suitable for analog electronic signal processing, finally also the Viterbi equalizer basing on digital signal processing is analyzed. A comparative review of mitigation by optical or electronic means concludes the discussion.

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Section: Improved Concepts For Optical Pmd Compensatorsmentioning

confidence: 99%

PMD compensation techniques

Bülow

Lanne²

2004

J Optic Comm Rep

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“…PMD compensators that consist of a fixed [1] and a variable [2] differential-group delay (DGD) element have been studied experimentally [3], and theoretically [4]. Because of the stochastic nature of PMD, it is difficult to compensate for the performance degradation due to that impairment.…”

Section: Introductionmentioning

confidence: 99%

Receiver optimization for 40 Gbit/s optical fiber systems with polarization mode dispersion

Lima

Oliveira

2009

2009 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC)

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We show that the performance of on-off-keyed 40 Gbit/s optical fiber systems whose optical and electrical receiver filter bandwidths are optimized for polarization-mode dispersion is equivalent to the performance of the same systems in which the receiver filters are optimized for operation in the absence of PMD. We also observed an increase in the sensitivity of the performance with respect to variations in the receiver filter bandwidths in the return-to-zero format in systems with PMD when compared with PMD-free operation.

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“…4 -10 The difficulties in PMD compensation lie in the fact that PMD fluctuates due to the change of environmental conditions, meaning a PMD compensator should be tunable in both differential group delay ͑DGD͒ and principal state of polarization ͑PSP͒. Recently, fiber optic first-order PMD compensators composed of polarization maintaining ͑PM͒ fiber sections for variable DGD have been suggested, 7,8,10 and they employ a large number of PM fiber sections separated by polarization transformers to achieve different DGD values. In this paper, we propose and demonstrate a much simpler and practical approach to the tuning of DGD applicable to PMD compensation with a minimum number of PM fiber sections and environmentally stable means to control the net DGD.…”

Section: Introductionmentioning

confidence: 99%

Simple all-fiber-optic component for first-order polarization mode dispersion compensation

et al. 2002

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A simple and reliable all-fiber-optic component for a first-order polarization mode dispersion compensator is presented and tested in a 10-Gbit/s transmission system. The proposed component incorporates tunable differential group delay (DGD) provided by several pieces of polarization maintaining (PM) fibers of different DGD that were spliced together with short lengths of single-mode fibers between them. The total DGD of the compensator is determined by the alignment of fast and slow axes of the PM fiber sections. Applying this component as a first-order polarization mode dispersion (PMD) compensator, we demonstrate that a component with seven pieces of PM fiber segments could possibly compensate the first-order PMD up to 63.5 ps with 1-ps steps and a switching time of 300 ms. We also optimize the number of PM fiber sections in this component for a first-order PMD compensation in a 10-Gbit/s system based on experimental results.

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Fast first-order PMD compensation with low insertion loss for 10 Gbit/s system

Cited by 16 publications

References 3 publications

PMD compensation techniques

PMD compensation techniques

Receiver optimization for 40 Gbit/s optical fiber systems with polarization mode dispersion

Simple all-fiber-optic component for first-order polarization mode dispersion compensation

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