Radiation hardened high-power Er 3+ /Yb 3+ -codoped fiber amplifiers for free-space optical communications

Abstract : The radiation responses of different high-power erbium/ytterbium-codoped fiber amplifiers (HP-EYDFA) have been investigated up to 100 krad (SiO2) dose levels. These devices are able to deliver 20 W of signal output power at 1565 nm by pumping at 915 nm (43 W) radiation tolerant (Er/Yb) or radiation hardened (ErYbCe) active few mode fibers; these performances are needed for free-space communications between low-orbit satellites and ground transceivers. X-ray irradiation results show that, thanks to a positive influence of the photo- and thermal-bleaching phenomena associated with such high-power operating conditions, the gain degradation levels of HP-EYDFA based on radiation hardened fibers remain below 6% after 100 krad at an accelerated dose rate of 3.4 rad/s.
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https://hal-ujm.archives-ouvertes.fr/ujm-01964799
Contributor : Sylvain Girard <>
Submitted on : Sunday, December 23, 2018 - 6:23:52 PM
Last modification on : Thursday, July 25, 2019 - 4:16:03 PM

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Ayoub Ladaci, Sylvain Girard, Luciano Mescia, Arnaud Laurent, Carine Ranger, et al.. Radiation hardened high-power Er 3+ /Yb 3+ -codoped fiber amplifiers for free-space optical communications. Optics Letters, Optical Society of America, 2018, 43 (13), pp.3049. ⟨10.1364/OL.43.003049⟩. ⟨ujm-01964799⟩

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