Radiation hardening techniques for rare-earth based optical fibers andamplifiers

Marco Cannas, Marilena Vivona, Roberto Boscaino, Benoît Cadier, Marilena Vivona, Arnaud Laurent, Sylvain Girard, Emmanuel Pinsard, Aziz Boukenter, Youcef Ouerdane, Luciano Mescia, Claude Marcandella, Thierry Robin, Prudenzano

Risultato della ricerca: Otherpeer review

4 Citazioni (Scopus)

Abstract

Er/Yb doped fibers and amplifiers have been shown to be very radiation sensitive, limiting their integration in space. We present an approach including successive hardening techniques to enhance their radiation tolerance. The efficiency of ourapproach is demonstrated by comparing the radiation responses of optical amplifiers made with same lengths of different rare-earth doped fibers and exposed to gamma-rays. Previous studies indicated that such amplifiers suffered significant degradation for doses exceeding 10 krad. Applying our techniques significantly enhances the amplifier radiation resistance, resulting in a very limited degradation up to 50 krad. Our optimization techniques concern the fiber composition, some possible pre-treatments and the interest of simulation tools used to harden by design the amplifiers.We showed that adding cerium inside the fiber phosphosilicate-based core strongly decreases the fiber radiationsensitivity compared to the standard fiber. For both fibers, a pre-treatment with hydrogen permits to enhance again the fiber resistance. Furthermore, simulations tools can also be used to improve the tolerance of the fiber amplifier byhelping identifying the best amplifier configuration for operation in the radiative environment.
Lingua originaleEnglish
Pagine82460Y-1-82460Y-7
Numero di pagine7
Stato di pubblicazionePublished - 2012

All Science Journal Classification (ASJC) codes

  • ???subjectarea.asjc.2500.2504???
  • ???subjectarea.asjc.3100.3104???
  • ???subjectarea.asjc.1700.1706???
  • ???subjectarea.asjc.2600.2604???
  • ???subjectarea.asjc.2200.2208???

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