Gordienko, V;
Ferreira, FM;
Gaur, C;
Doran, N;
(2021)
Looped Polarization-Insensitive Fiber Optical Parametric Amplifiers for Broadband High Gain Applications.
Journal of Lightwave Technology
10.1109/JLT.2021.3099441.
(In press).
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Abstract
We investigate polarization insensitive fiber optical parametric amplifiers (FOPAs) employing a balanced polarization diversity loop with at least two unidirectional gain fibers. We describe and compare three variants of looped polarization insensitive FOPAs optimized for noise figure, mitigation of nonlinear impairments and their trade-off, respectively. The test scenario consists of amplifying, by up to 14 dB, a set of 21x50 GHz-spaced channels including a 100G PDM-QPSK signal, and evaluating a power of nonlinear crosstalk, noise figure and amplified signal BER for each variant. For the first time we demonstrate a polarization insensitive FOPA amplifying WDM signals with a noise figure as low as 5.8 dB, and a polarization insensitive FOPA with output WDM signal power of 23 dBm. The testing results let us identify likely application scenarios for each looped FOPA variant. We justify potential implementation of polarization-insensitive FOPAs in future optical communication systems by arguing its ability to deliver low noise figure <6 dB for output signal power as high as 29 dBm and to enable polarization insensitive gain for the most prominent single-polarization FOPA achievements realizing ultrawide high gain.
| Type: | Article |
|---|---|
| Title: | Looped Polarization-Insensitive Fiber Optical Parametric Amplifiers for Broadband High Gain Applications |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1109/JLT.2021.3099441 |
| Publisher version: | https://doi.org/10.1109/JLT.2021.3099441 |
| Language: | English |
| Additional information: | This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ |
| Keywords: | Gain , Optical fiber amplifiers , Wavelength division multiplexing , Optical attenuators , Optical polarization , Optical fiber communication , Nonlinear optics |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10133220 |
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