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Proceedings Paper

Radiation influence on Er/Yb doped fiber amplifiers performances: high power and WDM architectures
Author(s): Ayoub Ladaci; Sylvain Girard ; Luciano Mescia ; Thierry Robin; Arnaud Laurent; Benoit Cadier; Carine Ranger; David Kermen; Baidy Sane; Emmanuel Marin; Mathieu Boutillier; Youcef Ouerdane; Aziz Boukenter
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Paper Abstract

The actual challenge for space researchers is to increase the free space telecommunications data speed transfer. One of the most promising solutions is the optical communication systems. This technology can be used for the inter-satellite and/or satellite-ground links, reaching the TB/s speed for data transfer in the case of Dense Wavelengths Division Multiplexing (DWDM) based technologies. However, to achieve such systems, two main issues need to be overcome: the first one is to validate that no unexpected radiation effect appears when the optical amplifier working in the DWDM configuration and the second one is to estimate the degradation of the Erbium/Ytterbium co-doped boost (High Power - HP) amplifier performances during the space mission lifetime. In this last case, the used high powers will result in a complex response of the amplifier due to photobleaching, photodarkening and thermal effects. In this work, we estimate the radiation effects on an Er/Yb co-doped boost amplifier operating in a Dense WDM configuration. Both radiation hardened and a conventional versions of EYDFA have been considered. The obtained results allow estimating the performances of our fibers under exposure in such amplification setup and also to validate its potential for use in an actual space mission. We demonstrate the good radiation resistance of Er/Yb co-doped 12 μm core diameter fibers reaching 20 W of output power for telecommunication applications. This core diameter provides a fewmode optical output signal (with low dispersion) and with enough power to ensure the signal propagation trough the atmosphere. This study is fundamental as several phenomena such as Photo/Thermal bleaching, photo-darkening… are in competition due to the high-power light density in the fiber core and the system radiation response cannot yet be predicted by actual simulation tools.

Paper Details

Date Published: 15 February 2018
PDF: 5 pages
Proc. SPIE 10524, Free-Space Laser Communication and Atmospheric Propagation XXX, 1052410 (15 February 2018); doi: 10.1117/12.2290381
Show Author Affiliations
Ayoub Ladaci, Lab. Hubert Curien, CNRS, Univ. Lyon (France)
Politecnico di Bari (Italy)
iXBlue Photonics (France)
Sylvain Girard , Lab. Hubert Curien, CNRS, Univ. Lyon (France)
Luciano Mescia , Politecnico di Bari (Italy)
Thierry Robin, iXBlue Photonics (France)
Arnaud Laurent, iXBlue Photonics (France)
Benoit Cadier, iXBlue Photonics (France)
Carine Ranger, iXBlue Photonics (France)
David Kermen, iXBlue Photonics (France)
Baidy Sane, Lab. Hubert Curien, CNRS, Univ. Lyon (France)
Emmanuel Marin, Lab. Hubert Curien, CNRS, Univ. Lyon (France)
Mathieu Boutillier, Ctr. National d'Études Spatiales (France)
Youcef Ouerdane, Lab. Hubert Curien, CNRS, Univ. Lyon (France)
Aziz Boukenter, Lab. Hubert Curien, CNRS, Univ. Lyon (France)


Published in SPIE Proceedings Vol. 10524:
Free-Space Laser Communication and Atmospheric Propagation XXX
Hamid Hemmati; Don M. Boroson, Editor(s)

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