Optical PMD compensation performance: numerical assessment

Poirrier, J.; Bülow, H.; Buchali, Fred

doi:10.1109/ofc.2002.1036328

Cited by 11 publications

(5 citation statements)

References 6 publications

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“…The birefringence of each of the polarization maintaining fibers amounts to about 40 % of the bit period [20]. Detailed numerical and experimental analysis of this two-stage structure at 40 Gbit/s shows that a further improvement compared to a one-stage structure can be achieved [22]. On one hand, this is demonstrated by the measurements drawn in Fig.…”

Section: Improved Concepts For Optical Pmd Compensatorsmentioning

confidence: 80%

“…For the experiments an eye monitor was incorporated. With DOP as feedback parameter the likelihood increases of being trapped in a nonoptimum local maximum [22]. Occurrence (y-axis) of an OSNR penalty beyond a limit (x-axis) measured without PMD compensator, with a one-stage PMDC, and with a two-stage PMDC (cf., Fig.…”

Section: Improved Concepts For Optical Pmd Compensatorsmentioning

confidence: 99%

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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: 80%

Section: Improved Concepts For Optical Pmd Compensatorsmentioning

confidence: 99%

PMD compensation techniques

Bülow

Lanne²

2004

J Optic Comm Rep

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“…It consists of many adaptive compensation elements, a feedbacksignal generator and control unit. The adaptive compensation elements are usually composed of a few PCs and compensation elements, which could be birefringent elements, polarizers, or devices that can generate higher-order PMD [12]. The control unit uses the feedback signal to adjust the PCs and compensation elements dynamically.…”

Section: Operating Principlementioning

confidence: 99%

“…3. Optical PMD compensation, which is the most effective PMD compensation method for a directdetection system [6,12,17]. Advances in digital signal processing technology have revived interest in coherent optical communications, which is now a promising solution for next-generation optical networks.…”

Section: Introductionmentioning

confidence: 99%

Optical polarization mode dispersion compensators for high-speed optical communication systems

Xie¹,

Werner²,

Haunstein

et al. 2010

Bell Labs Tech. J.

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This paper details and describes optical polarization mode dispersion compensators (PMDCsnature of PMD makes it a difficult problem. PMD not only varies randomly over the wavelength, which gives rise to higher order PMD, but drifts randomly with time as well due to environmental changes such as temperature variations and mechanical vibrations along the fiber.To reduce PMD impairments, various PMD mitigation techniques have been proposed and demonstrated [2]. In general, PMD mitigation techniques can be divided into three main approaches:

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“…out (ω) = e −αL e −jβ(ω)L U(ω 0 )e −j∆β(ω)L A(ω)e jωt e P SP(11) Using eq.10 and 11 we get: e −αL e −jβ(ω)L (U(ω 0 ) + U (ω 0 )∆ω) A(ω)e jωt e P SP = e −αL e −jβ(ω)L U(ω 0 )e −j∆β(ω)L A(ω)e jωt e P SP (U(ω 0 ) + U (ω 0 )∆ω) e P SP = U(ω 0 )e −j∆β(ω)L e P SP…”

mentioning

confidence: 99%

Compensation of chromatic dispersion and polarization mode dispersion in optical transmission systems

et al. 2003

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Chromatic dispersion and polarization mode dispersion (PMD) are the most relevant disturbances in optical high speed transmission systems. The influence of chromatic dispersion can be overcome by different methods such as dispersion compensating fibers or fiber gratings. Because of its stochastic behavior the struggle against PMD is much more troublesome and essential for bit rates above 10 Gbit/s. The paper describes the influence of polarization mode dispersion derived from basic principles of transmission. It gives some physical understanding and simple derivation of the characteristic equations of PMD. One distinguishes between first and second order PMD. An optical fiber link showing first order PMD only can be modelled by a waveguide with time varying birefringence. If the birefringence additionally is frequency dependent the fiber will show higher order polarization mode dispersion.PMD compensators can be divided in a similar manner: compensators considering first order PMD only and compensators including PMD of higher order. Compensators operating in the optical domain or in the electrical domain have been proposed.

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Optical PMD compensation performance: numerical assessment

Cited by 11 publications

References 6 publications

PMD compensation techniques

PMD compensation techniques

Optical polarization mode dispersion compensators for high-speed optical communication systems

Compensation of chromatic dispersion and polarization mode dispersion in optical transmission systems

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