IONIZING RADIATION-RESISTANT OPTICAL FIBER AMPLIFIER

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PROBLEM TO BE SOLVED : To provide an amplifying or laser optical fiber which can be used in an environment with strong ionizing radiation with limited optical losses. SOLUTION : The amplifying or laser optical fiber comprises a central core suitable for transmitting and amplifying an optical signal and an optical cladding surrounding the central core and suitable for confining the transmitted optical signal within the core. The core has a matrix and contains rare-earth-doped silica-based nanoparticles. Each nanoparticle contains at least 85 wt.% silica. Such a fiber can be used in an environment with strong ionizing radiation with limited optical losses. COPYRIGHT : (C)2010, JPO&INPIT