The so-called canonical optical fibers (OFs) are samples especially designed to highlight the impact of some manufacturing process parameters on the radiation responses. Thanks to the results obtained on these samples, it is thus possible to define new procedures to better control the behaviors of OFs in radiation environments. In this article, we characterized the responses, under steady-state X-rays, of canonical samples representative of the most common fiber types differing by their core-dopants: pure silica, Ge, Al, and P. Their radiation-induced attenuation (RIA) spectra were measured online at both room temperature (RT) and liquid nitrogen temperature (LNT), in the energy range [0.6-3.0] eV (2100-410 nm), highlighting the RIA growth kinetics during the fiber exposure up to an accumulated dose of 200 Gy(SiO2) at a constant dose rate of 100 mGy/s at RT. At LNT, the deposited doses varied between 100 and 180 Gy, with a time-dependent dose rate. In order to understand the origin of the excess losses and the difference between the RIA spectral shapes observed at the two temperatures, spectral decomposition of the optical losses has been performed using a set of Gaussian absorption bands related to the already known point defects. As a result, if the RIA in the visible domain is quite well understood, the knowledge of the RIA origin in the near-IR remains incomplete, justifying new and deeper studies to clarify the response of the fibers under steady-state irradiation.

De Michele V., Morana A., Campanella C., Vidalot J., Alessi A., Boukenter A., et al. (2020). Steady-State X-Ray Radiation-Induced Attenuation in Canonical Optical Fibers. IEEE TRANSACTIONS ON NUCLEAR SCIENCE, 67(7), 1650-1657 [10.1109/TNS.2020.2969717].

Steady-State X-Ray Radiation-Induced Attenuation in Canonical Optical Fibers

Cannas M.;
2020

Abstract

The so-called canonical optical fibers (OFs) are samples especially designed to highlight the impact of some manufacturing process parameters on the radiation responses. Thanks to the results obtained on these samples, it is thus possible to define new procedures to better control the behaviors of OFs in radiation environments. In this article, we characterized the responses, under steady-state X-rays, of canonical samples representative of the most common fiber types differing by their core-dopants: pure silica, Ge, Al, and P. Their radiation-induced attenuation (RIA) spectra were measured online at both room temperature (RT) and liquid nitrogen temperature (LNT), in the energy range [0.6-3.0] eV (2100-410 nm), highlighting the RIA growth kinetics during the fiber exposure up to an accumulated dose of 200 Gy(SiO2) at a constant dose rate of 100 mGy/s at RT. At LNT, the deposited doses varied between 100 and 180 Gy, with a time-dependent dose rate. In order to understand the origin of the excess losses and the difference between the RIA spectral shapes observed at the two temperatures, spectral decomposition of the optical losses has been performed using a set of Gaussian absorption bands related to the already known point defects. As a result, if the RIA in the visible domain is quite well understood, the knowledge of the RIA origin in the near-IR remains incomplete, justifying new and deeper studies to clarify the response of the fibers under steady-state irradiation.
Settore FIS/01 - Fisica Sperimentale
De Michele V., Morana A., Campanella C., Vidalot J., Alessi A., Boukenter A., et al. (2020). Steady-State X-Ray Radiation-Induced Attenuation in Canonical Optical Fibers. IEEE TRANSACTIONS ON NUCLEAR SCIENCE, 67(7), 1650-1657 [10.1109/TNS.2020.2969717].
File in questo prodotto:
File Dimensione Formato  
IEEE20_a.pdf

Solo gestori archvio

Descrizione: Articolo
Tipologia: Versione Editoriale
Dimensione 2.48 MB
Formato Adobe PDF
2.48 MB Adobe PDF   Visualizza/Apri   Richiedi una copia

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/10447/462997
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 7
  • ???jsp.display-item.citation.isi??? 7
social impact