Pang, Xiaodan, Ozolins, Oskars, El-Taher, Atalla, Schatz, Richard, Jacobsen, Gunnar, Sergeyev, Sergey and Popov, Sergei (2017). Experimental evaluation of impairments in unrepeatered DP-16QAM link with distributed raman amplification. Nature Photonics, 4 (1),
Abstract
The transmission impairments of a Raman amplified link using dual-polarization 16-quadrature amplitude modulation (DP-16QAM) are experimentally characterized. The impact of amplitude and phase noise on the signal due to relative intensity noise (RIN) transfer from the pump are compared for two pumping configurations: first-order backward pumping and bi-directional pumping. Experimental results indicate that with increased Raman backward pump power, though the optical signal-to-noise ratio (OSNR) is increased, so is the pump-induced amplitude and phase noise. The transmission performance is firstly improved by the enhanced OSNR at a low pump power until an optimum point is reached, and then the impairments due to pump-induced noise start to dominate. However, the introduction of a low pump power in the forward direction can further improve the system's performance.
| Publication DOI: | https://doi.org/10.3390/photonics4010016 |
|---|---|
| Divisions: | College of Engineering & Physical Sciences > Aston Institute of Photonics Technology (AIPT) |
| Additional Information: | © 2017 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). Funding: EU projects ICONE, gr. # 608099, GRIFFON, gr. # 324391 and Vetenskapsrädet PHASE, gr. #2016-04510. |
| Uncontrolled Keywords: | Coherent communications,Fiber optics communications,Raman amplification,Radiology Nuclear Medicine and imaging,Instrumentation,Atomic and Molecular Physics, and Optics |
| Publication ISSN: | 1749-4885 |
| Last Modified: | 17 Oct 2025 07:05 |
| Date Deposited: | 23 Oct 2017 10:15 |
| Full Text Link: | |
| Related URLs: |
http://www.scop ... tnerID=8YFLogxK
(Scopus URL) |
PURE Output Type: | Article |
| Published Date: | 2017-03-08 |
| Accepted Date: | 2017-03-06 |
| Submitted Date: | 2017-01-13 |
| Authors: |
Pang, Xiaodan
Ozolins, Oskars El-Taher, Atalla Schatz, Richard Jacobsen, Gunnar Sergeyev, Sergey ( 
0000-0002-1515-5019)
Popov, Sergei |