Electronic equalization of fiber PMD-induced distortion at 10 Gbit/s

Bülow, H.; Schlump, D.; Weber, J.; Wedding, B.; Heidemann, R.

doi:10.1109/ofc.1998.657287

Cited by 14 publications

(3 citation statements)

References 3 publications

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“…Since then, a number of studies were undertaken to explore a variety of equalizer structures for adaptive optical-channel impairment compensation ranging from feedforward-type equalizers to maximum-likelihood estimators [6,7,8,9,10,11]. Among many studies in electronic PMD compensation in recent years, [12,13,14,15,16,17,18,19], the first decision-feedback loop and tapped-delay-line equalizer at 10 Gbps were implemented in [20] and [21] respectively. The maximum-likelihood estimation for PMD compensation was also investigated in [22,23].…”

Section: Introductionmentioning

confidence: 99%

Adaptive Electronic Dispersion Compensator for Chromatic and Polarization-Mode Dispersions in Optical Communication Systems

Koc¹

2005

EURASIP J. Adv. Signal Process.

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The widely-used LMS algorithm for coefficient updates in adaptive (feedforward/decision-feedback) equalizers is found to be suboptimal for ASE-dominant systems but various coefficient-dithering approaches suffer from slow adaptation rate without guarantee of convergence. In view of the non-Gaussian nature of optical noise after the square-law optoelectronic conversion, we propose to apply the higher-order least-mean 2Nth-order (LMN) algorithms resulting in OSNR penalty which is 1.5Ã¢Â€Â“2 dB less than that of LMS. Furthermore, combined with adjustable slicer threshold control, the proposed equalizer structures are demonstrated through extensive Monte Carlo simulations to achieve better performance

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Section: Introductionmentioning

confidence: 99%

Adaptive Electronic Dispersion Compensator for Chromatic and Polarization-Mode Dispersions in Optical Communication Systems

Koc¹

2005

EURASIP J. Adv. Signal Process.

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“…Polarization mode dispersion (PMD) is one of the key limitations to high-speed optical transmission systems [1]. PMD compensation techniques have been proposed to improve transmission performance [2].…”

Section: Introductionmentioning

confidence: 99%

Optical Reshaping Technology to Reduce PMD Transmission Impairments

Shi¹,

Chen²

2001

Journal of Optical Communications

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“…Electrical compensation, equivalent to delaying the optical power in one polarization, is performed after detection at the receiver using phase diversity [27] or electrical filtering [28] [29]. However, these techniques cannot be performed in-line along a large optical system.…”

Section: Pmd Compensationmentioning

confidence: 99%

Analysis of polarization mode dispersion in optical fiber communications and photonic microwave filters

Guo¹

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The birefringence of real-life optical fibers causes pulse broadening in fiber-optic communication systems. This phenomenon is known as polarization mode dispersion (PMD). PMD has recently emerged as one of the critical concerns in achieving highperformance optical fiber transmission systems. A major part of the thesis is devoted to the study of PMD, together with chromatic dispersion (CD), in high bit-rate optical fiber communication systems. A new approach has been presented in this thesis for the description of PMD and determining its effect on pulse and continuous RF signals. This approach has the advantage of (a) clear description of the behavior of the state-of-polarization (SOP) and the PMD vector, and (b) easy calculation of the effect of PMD and CD on pulse and continuous signals. The work presented in this dissertation includes: (i) A novel analytical expression relating the output state of polarization and the PMD vector including polarization-dependent chromatic dispersion (PCD), in terms of the angle of precession of the output state of polarization around the PMD vector. A number of new expressions incorporating for the first time this angle of precession have been derived. First, a general relation to study the effect of differential group delay (DGD), PCD and chromatic dispersion on pulses of arbitrary shapes has been derived. From this general relation, we derive expressions for pulse broadening and power penalty for Gaussian pulses. Measured results are presented to support the expressions derived above. To study the effects of higher-order PMD, two new terms have been introduced: depolarization vector and depolarization-dependent chromatic dispersion. A novel analytical expression relating the PMD vector and depolarization vector including depolarization-dependent chromatic dispersion (DCD), in terms of the angle ...

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Electronic equalization of fiber PMD-induced distortion at 10 Gbit/s

Abstract: Wednesday Afternoon 0 151 polymer rib waveguidesmicro heaters WH8 waveguides. back-to-back PMD: PMD=O A%=SOps A /p0.66 < m 0 10-7 equalized m W 10-8 i A High Tunable External Pol.

Cited by 14 publications

References 3 publications

Adaptive Electronic Dispersion Compensator for Chromatic and Polarization-Mode Dispersions in Optical Communication Systems

Adaptive Electronic Dispersion Compensator for Chromatic and Polarization-Mode Dispersions in Optical Communication Systems

Optical Reshaping Technology to Reduce PMD Transmission Impairments

Analysis of polarization mode dispersion in optical fiber communications and photonic microwave filters

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