Broadband Radiation-Resistant Erbium-Doped Optical Fibers for Space Applications

We explore how radiation-resistant broadband erbium-doped fibers (EDFs) can be achieved by using a carefully selected chemical composition, without specific coating or specific packaging. In this framework, we define a factor of merit, an appropriate and effective tool to design a radiation-hardened...

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Bibliographic Details
Published in:IEEE transactions on nuclear science 2017-06, Vol.64 (6), p.1540-1548
Main Authors: Dardaillon, Remi, Thomas, Jeremie, Myara, Mikhael, Blin, Stephane, Pastouret, Alain, Gonnet, Cedric, Signoret, Philippe
Format: Article
Language:English
Subjects:
Absorption
Accelerated tests
Aluminum
Broadband
Chemical composition
Degradation
Doped fibers
Erbium
Erbium-doped fiber amplifiers
Erbium-doped fiber amplifiers (EDFAs)
factor of merit (FOM)
Fibers
Gain
Irradiation
modeling
Optical fibers
Optical pumping
Packaging
Radiation
Radiation dosage
Radiation effects
Radiation hardening
Radiation tolerance
radiation-induced absorption (RIA)
Space applications
specialty fibers
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Summary:We explore how radiation-resistant broadband erbium-doped fibers (EDFs) can be achieved by using a carefully selected chemical composition, without specific coating or specific packaging. In this framework, we define a factor of merit, an appropriate and effective tool to design a radiation-hardened EDF amplifier (EDFA) based on a mature technology. We focus on specialty fibers, with a finely tuned composition in aluminum and erbium, guaranteeing the optimal operation of an EDFA (a 20-nm bandwidth and an optical output power level of at least 18 dBm) in the classical booster configuration throughout the entire geostationary mission. These performances are estimated thanks to a standard accelerated test, with a 300-Gy dose deposition at a dose rate of 0.4 Gy/h. We also confirmed, based on experiments and modeling, the importance of the radiation-induced absorption at pump wavelength on the EDFA degradation under irradiation.
ISSN:0018-9499
1558-1578
DOI:10.1109/TNS.2017.2701550