All-optical multilevel amplitude regeneration in a single nonlinear optical loop mirror

F. Wen, C. P. Tsekrekos, Y. Geng, X. Zhou, B. Wu, K. Qiu, S. K. Turitsyn, S. Sygletos

Research output: Contribution to journalArticle

Abstract

We experimentally demonstrate all-optical amplitude regeneration of 4-level pulse amplitude modulated signals (PAM4) based on a single nonlinear optical loop mirror (NOLM). Four power-plateau regions are achieved using return-to-zero (RZ) pulses of narrow pulse-width, enabling large nonlinear phase shifts within the highly nonlinear fiber (HNLF). We quantify noise suppression characteristics at each amplitude level and obtain an overall EVM improvement of 0.92dB by optimizing input power and distortion strength. A theoretical analysis has been also carried out matching the experimental results and revealing the design characteristics of the regenerator’s nonlinear transfer function.
Original languageEnglish
Pages (from-to)12698-12706
JournalOptics Express
Volume26
Issue number10
DOIs
Publication statusPublished - 14 May 2018

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regeneration
mirrors
regenerators
pulse amplitude
transfer functions
plateaus
pulse duration
phase shift
retarding
fibers
pulses

Bibliographical note

Published by The Optical Society under the terms of the Creative Commons Attribution 4.0 License. Further
distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation,
and DOI.

Cite this

Wen, F. ; Tsekrekos, C. P. ; Geng, Y. ; Zhou, X. ; Wu, B. ; Qiu, K. ; Turitsyn, S. K. ; Sygletos, S. / All-optical multilevel amplitude regeneration in a single nonlinear optical loop mirror. In: Optics Express. 2018 ; Vol. 26, No. 10. pp. 12698-12706.
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All-optical multilevel amplitude regeneration in a single nonlinear optical loop mirror. / Wen, F.; Tsekrekos, C. P.; Geng, Y.; Zhou, X.; Wu, B.; Qiu, K.; Turitsyn, S. K.; Sygletos, S.

In: Optics Express, Vol. 26, No. 10, 14.05.2018, p. 12698-12706.

Research output: Contribution to journalArticle

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T1 - All-optical multilevel amplitude regeneration in a single nonlinear optical loop mirror

AU - Wen, F.

AU - Tsekrekos, C. P.

AU - Geng, Y.

AU - Zhou, X.

AU - Wu, B.

AU - Qiu, K.

AU - Turitsyn, S. K.

AU - Sygletos, S.

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PY - 2018/5/14

Y1 - 2018/5/14

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AB - We experimentally demonstrate all-optical amplitude regeneration of 4-level pulse amplitude modulated signals (PAM4) based on a single nonlinear optical loop mirror (NOLM). Four power-plateau regions are achieved using return-to-zero (RZ) pulses of narrow pulse-width, enabling large nonlinear phase shifts within the highly nonlinear fiber (HNLF). We quantify noise suppression characteristics at each amplitude level and obtain an overall EVM improvement of 0.92dB by optimizing input power and distortion strength. A theoretical analysis has been also carried out matching the experimental results and revealing the design characteristics of the regenerator’s nonlinear transfer function.

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Wen F, Tsekrekos CP, Geng Y, Zhou X, Wu B, Qiu K et al. All-optical multilevel amplitude regeneration in a single nonlinear optical loop mirror. Optics Express. 2018 May 14;26(10):12698-12706. https://doi.org/10.1364/OE.26.012698