Theoretical explanation of enhanced low dose rate sensitivity in erbium-doped optical fibers

Gilard, O.; Thomas, Jérémie; Troussellier, Laurent; Myara, M.; Signoret, Philippe; Burov, Ekaterina; Sotom, M.

doi:10.1364/ao.51.002230

Cited by 25 publications

(21 citation statements)

References 14 publications

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“…These outcomes have major consequences on the understanding and assessment of the YDF resistance for applications concerned with PRD. Future work will consist, firstly in the study of degradation kinetic without pumping, to highlight the usefulness of under pumping testing and not only passive testing which may provide opposite trend to our results [19,20]. Secondly in a study of other co-doping in YDF like with Al, P, Cerium and in testing of all this fibers in amplifying conditions.…”

Section: Resultsmentioning

confidence: 84%

Simultaneous effects of photo- and radio- darkening in ytterbium-doped aluminosilicate fibers

Duchez

Mady

Mebrouk

et al. 2014

AIP Conference Proceedings

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International audienceWe present original characterizations of photo-radio-darkening in ytterbium-doped silica optical fibers submitted to the simultaneous action of the pump and of an ionizing radiation. We present the interplay between both radiations, showing e.g. that the pump is able to darken or bleach the fiber depending on the ionizing dose. The photo- resistance of the fiber is shown to play a crucial role on its radio-resistance, and that photo-resistant fibers should be also radio-resistant in low dose rate conditions. All the results are thoroughly explained by a physical model presented in a separate article by Mady et al. (this conference proceeding)

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Section: Resultsmentioning

confidence: 84%

Simultaneous effects of photo- and radio- darkening in ytterbium-doped aluminosilicate fibers

Duchez

Mady

Mebrouk

et al. 2014

AIP Conference Proceedings

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“…And here we introduce a density of the color centers responsible for the RIA evolves according to the following differential equation [7] , ( )…”

Section: Resultsmentioning

confidence: 99%

Simulation approach for the design of radiation-hardened Erbium doped fiber amplifiers

Zhou

et al. 2013

SPIE Proceedings

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We investigate the sensitivity of fiber amplifiers to radiations and present an approach to design radiation hardened rare-earth doped fiber amplifiers. This paper includes testing experiments on comparing the radiation responses (200krad electron irradiation) of fiber amplifiers made with same lengths of different rare-earth doped fibers. Simulation tools can also be used to improve the tolerance of the fiber amplifiers by helping identifying the best performance for operation in harsh environment, simulation analysis figured that fiber length of the amplifier should be optimized to reduce the radiation-induced losses around the signal wavelength that strongly impact the fiber response. By using this particular approach, fiber amplifiers with little insensitivity to radiations could be manufactured in the future.

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“…The lowered degradation we found at low dose rate rests on the action of the pump. An opposite trend might be measured in passive tests [7,10]. The remarkable interplay between PD and RD basically arises from the fact that both degradation types share the same color centers, and therefore, that pump-induced PB competes with both PD and RD.…”

mentioning

confidence: 91%

“…PD has been well characterized [1][2][3][4][5] even if its origin and mechanism remain controversial [5]. RD has been rather poorly addressed in YDF [5,6] compared with erbiumdoped fibers [7,8]. The possible interplay between PD and RD has not been clearly examined to date, though pump and ionizing radiations will act simultaneously in space operation conditions.…”

mentioning

confidence: 99%

Interplay between photo- and radiation-induced darkening in ytterbium-doped fibers

et al. 2014

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This Letter demonstrates a remarkable interplay between photo- and radiation-induced darkening of ytterbium-doped alumino-silica optical fibers operated in amplifying conditions and harsh environments (as, e.g., in space-based applications). Influences of the pump power, ionizing dose, and dose rate on this interaction are characterized. The pump is capable of accelerating or slowing down the radiation-induced darkening build-up depending on the ionizing dose. The steady-state photo-radio-darkening level is independent of the dose and at least equal to the equilibrium level of pure photo-darkening. This lower limit is notably reached at low dose rates, including those encountered in space. We, therefore, argue that photo-resistant ytterbium-doped fibers will resist against a space mission, whatever the dose.

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Theoretical explanation of enhanced low dose rate sensitivity in erbium-doped optical fibers

Cited by 25 publications

References 14 publications

Simultaneous effects of photo- and radio- darkening in ytterbium-doped aluminosilicate fibers

Simultaneous effects of photo- and radio- darkening in ytterbium-doped aluminosilicate fibers

Simulation approach for the design of radiation-hardened Erbium doped fiber amplifiers

Interplay between photo- and radiation-induced darkening in ytterbium-doped fibers

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