We studied the radiation response of a dual-stage optical amplifier (DSOA) in terms of gain degradation, noise figure, and radiation-induced attenuation (RIA) related to the corresponding active fiber, through an experimental-simulative approach. The DSOA consists of two fiber amplifiers connected in cascade: an erbium-doped fiber amplifier (EDFA) followed by an erbium–ytterbium-doped fiber amplifier (EYDFA). The erbium-doped fiber (EDF) and the erbium–ytterbium-doped fiber (EYDF) were irradiated during different runs at a dose rate of 0.28 Gy(SiO2)/s, reaching a total ionizing dose (TID) of 3 kGy(SiO2). Preirradiation DSOA gain is estimated at ~53 dB, with a degradation limited to ~13.8 dB for a cumulative dose of 3 kGy(SiO2) under X-rays. The noise figure, before irradiation, is ~6.3 dB and reaches ~10.7 dB at 3 kGy(SiO2). Good agreement was obtained between the experimental results and the simulation model for the evolution of gain degradation as a function of deposited dose (in different configurations). The proposed approach validates the simulation code even for applications in harsh environments, including cascaded optical amplifiers.
Investigation of the Radiation Response of a Dual-Stage Optical Amplifier / Facchini, A.; Morana, A.; Mescia, L.; Robin, T.; Boukenter, A.; Marin, E.; Ouerdane, Y.; Girard, S.. - In: IEEE TRANSACTIONS ON NUCLEAR SCIENCE. - ISSN 0018-9499. - STAMPA. - 72:(2025), pp. 2774-2782. [10.1109/tns.2025.3545269]
Investigation of the Radiation Response of a Dual-Stage Optical Amplifier
Mescia, L.;
2025
Abstract
We studied the radiation response of a dual-stage optical amplifier (DSOA) in terms of gain degradation, noise figure, and radiation-induced attenuation (RIA) related to the corresponding active fiber, through an experimental-simulative approach. The DSOA consists of two fiber amplifiers connected in cascade: an erbium-doped fiber amplifier (EDFA) followed by an erbium–ytterbium-doped fiber amplifier (EYDFA). The erbium-doped fiber (EDF) and the erbium–ytterbium-doped fiber (EYDF) were irradiated during different runs at a dose rate of 0.28 Gy(SiO2)/s, reaching a total ionizing dose (TID) of 3 kGy(SiO2). Preirradiation DSOA gain is estimated at ~53 dB, with a degradation limited to ~13.8 dB for a cumulative dose of 3 kGy(SiO2) under X-rays. The noise figure, before irradiation, is ~6.3 dB and reaches ~10.7 dB at 3 kGy(SiO2). Good agreement was obtained between the experimental results and the simulation model for the evolution of gain degradation as a function of deposited dose (in different configurations). The proposed approach validates the simulation code even for applications in harsh environments, including cascaded optical amplifiers.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
