Reduction of the chromatic dispersion penalty at 10 Gbit/s by integrated electronic equalisers

Buchali, Fred; Bülow, H.; Baumert, W.; Ballentin, R.; Wehreu, T.

doi:10.1109/ofc.2000.868587

Cited by 19 publications

(7 citation statements)

References 2 publications

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“…To simplify the analysis in this section of the paper, fiber nonlinearity and thermal noise were not considered, but will be included in the subsequent sections. The fiber , the received value of V A (t) for a sequence of consecutive logical data '0's was so small that any optical noise led to large estimation inaccuracy in V f (t)=V y (t)/V A (t) 2 . This inaccuracy contained significant low-frequency content, which was further increased by the low-frequency component amplification.…”

Section: Suppression Of Low-frequency Component Amplificationmentioning

confidence: 99%

“…Electronic dispersion compensation (EDC) has attracted much interest recently due to its cost effectiveness and adaptive equalization capability for extending reach in legacy multimode optical fiber [1] as well as in metro and long-haul optical transmission systems [2][3][4]. The receiver-side EDC, which adapts quickly to changes in link conditions, is of particular value for future transparent optical networks where the reconfigurability of the add-and drop-nodes causes the transmission paths to vary.…”

Section: Introductionmentioning

confidence: 99%

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Electronic dispersion compensation using full optical-field reconstruction in 10Gbit/s OOK based systems

Zhao¹,

McCarthy²,

Ellis³

2008

Opt. Express

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Abstract:We investigate the design of electronic dispersion compensation (EDC) using full optical-field reconstruction in 10Gbit/s on-off keyed transmission systems limited by optical signal-to-noise ratio (OSNR). By effectively suppressing the impairment due to low-frequency component amplification in phase reconstruction, properly designing the transmission system configuration to combat fiber nonlinearity, and successfully reducing the vulnerability to thermal noise, a 4.8dB OSNR margin can be achieved for 2160km single-mode fiber transmission without any optical dispersion compensation. We also investigate the performance sensitivity of the scheme to various system parameters, and propose a novel method to greatly enhance the tolerance to differential phase misalignment of the asymmetric Mach-Zehnder interferometer. This numerical study provides important design guidelines which will enable full optical-field EDC to become a cost-effective dispersion compensation solution for future transparent optical networks.

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Section: Suppression Of Low-frequency Component Amplificationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Electronic dispersion compensation using full optical-field reconstruction in 10Gbit/s OOK based systems

Zhao¹,

McCarthy²,

Ellis³

2008

Opt. Express

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“…As electronic equalization is cheaper alternative to all-optical equalization, it is used in optical communication systems to reduce the impact of CD [18][19][20].…”

Section: Square Root Module (Srm) Devicementioning

confidence: 99%

Optical power budget enhancement in next-generation DDO-OFDM-based optical access networks using square root module

Kumar

Srivastava

2015

Photon Netw Commun

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A passive optical network based on orthogonal frequency division multiplexing (OFDM-PON) gives improved performance for high speed optical access network due to its greater resistance to fiber dispersion and higher bandwidth efficiency. In optical fiber communication, chromatic dispersion (CD) is a linear distortion in fiber, but it is converted into nonlinear distortion due to square-law characteristic of photo diode detector at the receiver side resulting in degradation of performance. To compensate for this nonlinear distortion, we proposed to use a linearized receiver circuit with square root module (SRM) device which can improve the performance of system in terms of CD tolerance. In this paper, we have analytically analyzed the performance of OFDM-PON system with and without SRM device for direct-detection optical OFDM-PON (DDO-OFDM-PON) system. At BER of 10 −3 , which is the limit of forward error correction, there is 11.1 and 13.5 dB improvement in optical budget with SRM for downstream and upstream direction, respectively, as compared to conventional DDO-OFDM-PON system.

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“…Where linear equalization techniques are sufficient, a transversal filter based method may be used for optical fiber links [1] or for backplanes [2]. More advanced techniques employing decision feedback equalizers (DFE) for non-linear channel impairments are also possible [3]. Equalization may also be performed in the digital domain by means of controlled digital finite impulse response (FIR) filters.…”

Section: Introductionmentioning

confidence: 99%

Backplane equalization comparison for 10-gb/s data communication with 0.25-μm sige bicmos and 0.18-μm cmos feed-forward equalizers

Kim

Raghavan

Gebara

et al. 2007

2007 European Conference on Wireless Technologies

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Two feed-forward equalizers are designed to improve high data rate signal transmission in backplanes. They are fabricated in 0.18m CMOS and 0.25-m SiGe BiCMOS technology respectively. The system specification for the two equalizers is similar and they both address 10-Gb/s data rate transmission. Analog multiplier cells, active delay units and output buffers comprise the building blocks of each FFE. A comparison of the two equalizers is conducted with reference to design topology. The impact of technology on key performance parameters such as delay and gain is discussed. When a 10-Gb/s non-return to zero signal is received through a 20-inch backplane, it is found that both equalizers successfully improve signal integrity by channel equalization. The BiCMOS FFE exhibits better performance as compared to the CMOS FFE but also dissipates more DC power.Index Terms -BiCMOS integrated circuits, data communication, delay lock loops, equalization, feedforward systems, intersymbol interference.

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Reduction of the chromatic dispersion penalty at 10 Gbit/s by integrated electronic equalisers

Cited by 19 publications

References 2 publications

Electronic dispersion compensation using full optical-field reconstruction in 10Gbit/s OOK based systems

Electronic dispersion compensation using full optical-field reconstruction in 10Gbit/s OOK based systems

Optical power budget enhancement in next-generation DDO-OFDM-based optical access networks using square root module

Backplane equalization comparison for 10-gb/s data communication with 0.25-μm sige bicmos and 0.18-μm cmos feed-forward equalizers

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Reduction of the chromatic dispersion penalty at 10 Gbit/s by integrated electronic equalisers

Cited by 19 publications

References 2 publications

Electronic dispersion compensation using full optical-field reconstruction in 10Gbit/s OOK based systems

Electronic dispersion compensation using full optical-field reconstruction in 10Gbit/s OOK based systems

Optical power budget enhancement in next-generation DDO-OFDM-based optical access networks using square root module

Backplane equalization comparison for 10-gb/s data communication with 0.25-&#x003BC;m sige bicmos and 0.18-&#x003BC;m cmos feed-forward equalizers

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Backplane equalization comparison for 10-gb/s data communication with 0.25-μm sige bicmos and 0.18-μm cmos feed-forward equalizers