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 language | English |
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Pages (from-to) | 12698-12706 |
Journal | Optics Express |
Volume | 26 |
Issue number | 10 |
DOIs | |
Publication status | Published - 14 May 2018 |
Bibliographical note
Published by The Optical Society under the terms of the Creative Commons Attribution 4.0 License. Furtherdistribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation,
and DOI.
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All-optical multilevel amplitude regeneration in a single nonlinear optical loop mirror
Wen, F. (Creator), Tsekrekos, C. (Creator), Geng, Y. (Creator), Zhou, X. (Creator), Xu, B. (Creator), Qiu, K. (Creator), Turitsyn, S. (Creator) & Sygletos, S. (Creator), Aston Data Explorer, 4 May 2018
DOI: 10.17036/researchdata.aston.ac.uk.00000357, https://www.osapublishing.org/oe/abstract.cfm?uri=oe-26-10-12698
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