Equalization-enhanced phase noise induced timing jitter

Ho, Keang-Po; Lau, Alan Pak Tao; Shieh, William

doi:10.1364/ol.36.000585

Cited by 22 publications

(35 citation statements)

References 13 publications

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“…The CD coefficient of 16 ps/nm/km is applied in all the evaluations. arises from the LO laser phase noise rather than the Tx phase noise, which is consistent with the reported analysis [18][19][20][21][22]. We can also find that the limits of the BER achieve a very good agreement with the BER floors (the dash curve) presented in our previous work [25,29].…”

Section: Theoretical Results and Analysissupporting

confidence: 91%

“…8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 It has been demonstrated that the EEPN scales linearly with the accumulated CD, the linewidth of LO laser, and the symbol rate [18][19][20], and the variance of the additional noise due to the EEPN can be expressed as…”

Section: Principle Of Equalization Enhanced Phase Noisementioning

confidence: 99%

“…This is because that the influence of EEPN is actually a complicated combination of enhanced phase noise, enhanced amplitude noise and time jitter, etc. [18][19][20]24,28,29], and the leading order Taylor expansion (e x ≈1+x), which ensures a conversion between the phase noise impact and the amplitude noise impact in n-PSK systems, is not accurate for a large EEPN and higher modulation formats. A higher order Taylor expansion in Eq.…”

Section: Numerical Simulations and Analysismentioning

confidence: 99%

“…However, the analysis of the phase noise in the transmitter (Tx) and the local oscillator (LO) lasers is often lumped together, and the interplay between the CD and the PN is not considered in the traditional evaluation of carrier phase estimation (including differential phase estimation). W. Shieh et al have provided the theoretical assessment to evaluate the equalization enhanced phase noise (EEPN) from the interaction between the LO phase fluctuation and the fiber dispersion [18][19][20][21]. C. Xie has investigated the impacts of CD on both the LO phase noise to amplitude noise conversion and the fiber nonlinear effects [22,23].…”

Section: Introductionmentioning

confidence: 99%

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Analytical BER performance in differential n-PSK coherent transmission system influenced by equalization enhanced phase noise

Jacobsen

Popov

et al. 2015

Optics Communications

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Long-haul high speed optical transmission systems are significantly distorted by the interplay between the electronic chromatic dispersion (CD) equalization and the local oscillator (LO) laser phase noise, which leads to an effect of equalization enhanced phase noise (EEPN). The EEPN degrades the performance of optical communication systems severely with the increment of fiber dispersion, LO laser linewidth, symbol rate, and modulation format. In this paper, we present an analytical model for evaluating the performance of bit-error-rate (BER) versus signal-to-noise ratio (SNR) in the n-level

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Section: Theoretical Results and Analysissupporting

confidence: 91%

Section: Principle Of Equalization Enhanced Phase Noisementioning

confidence: 99%

Section: Numerical Simulations and Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Analytical BER performance in differential n-PSK coherent transmission system influenced by equalization enhanced phase noise

Jacobsen

Popov

et al. 2015

Optics Communications

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“…The complicated interplay between the electronic CD equalization and the laser phase noise has been investigated in recent work, and this leads to an effect of equalization enhanced phase noise (EEPN) [14][15][16][17][18][19][20][21][22][23][24]. W.…”

Section: Introductionmentioning

confidence: 99%

Carrier phase estimation methods in coherent transmission systems influenced by equalization enhanced phase noise

Jacobsen

Popov

et al. 2013

Optics Communications

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. (2013) Carrier phase estimation methods in coherent transmission systems influenced by equalization enhanced phase noise. Optics Communications, 293. pp. 54-60. Permanent WRAP URL: http://wrap.warwick.ac.uk/93880 Copyright and reuse:The Warwick Research Archive Portal (WRAP) makes this work by researchers of the University of Warwick available open access under the following conditions. Copyright © and all moral rights to the version of the paper presented here belong to the individual author(s) and/or other copyright owners. To the extent reasonable and practicable the material made available in WRAP has been checked for eligibility before being made available.Copies of full items can be used for personal research or study, educational, or not-for-profit purposes without prior permission or charge. Provided that the authors, title and full bibliographic details are credited, a hyperlink and/or URL is given for the original metadata page and the content is not changed in any way. A note on versions:The version presented here may differ from the published version or, version of record, if you wish to cite this item you are advised to consult the publisher's version. Please see the 'permanent WRAP URL' above for details on accessing the published version and note that access may require a subscription. ABSTRACTWe present a comparative study on three carrier phase estimation algorithms, including a one-tap normalized least mean square (NLMS) method, a block-average method, and a Viterbi-Viterbi method in the n-level phase shift keying coherent transmission systems considering the equalization enhanced phase noise (EEPN). In these carrier phase estimation methods, the theoretical bit-error-rate floors based on traditional leading-order Taylor expansion are compared to the practical simulation results, and the tolerable total effective linewidths (involving the transmitter, the local oscillator lasers and the EEPN) for a fixed bit-error-rate floor are evaluated with different block size, when the fiber nonlinearities are neglected. The complexity of the three carrier phase estimation methods is also discussed. We find that the carrier phase estimation methods in practical systems should be analyzed based on the simulation results rather than the traditional theoretical predictions, when large EEPN is involved. The one-tap NLMS method can always show an acceptable behavior, while the step size is complicated to optimize. The block-average method is efficient to implement, but it behaves unsatisfactorily when using a large block size. The Viterbi-Viterbi method can show a small improvement compared to the block-average method, while it requires more computational complexity.

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Mode Coupling and its Impact on Spatially Multiplexed Systems

Kahn

2013

Optical Fiber Telecommunications

112

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Equalization-enhanced phase noise induced timing jitter

Cited by 22 publications

References 13 publications

Analytical BER performance in differential n-PSK coherent transmission system influenced by equalization enhanced phase noise

Analytical BER performance in differential n-PSK coherent transmission system influenced by equalization enhanced phase noise

Carrier phase estimation methods in coherent transmission systems influenced by equalization enhanced phase noise

Mode Coupling and its Impact on Spatially Multiplexed Systems

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