ملخص
Multiple-beam white-light interference fringes across an irradiated GRIN fibre, of length 2 cm and immersed in a liquid wedge interferometer that is followed by a grating spectrograph, are produced. These fringes are used to investigate the effect of gamma radiation, with different doses from 0.01 to 1 MGy, on the optical parameters of both the cladding (pure silica) and the core (germanium-doped silica) of the GRIN fibre. Optical parameters such as refractive index, refractive index difference, numerical aperture, V-number, index profile, chromatic dispersion and zero-dispersion wavelength are determined and studied. A two-term Sellmeier dispersion relation is adopted and fitted to the experimental data of the refractive index. Then, a dose-dependent Sellmeier formula is deduced to represent the effect of gamma radiation on different optical parameters.
اللغة الأصلية | English |
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رقم المقال | 320 |
الصفحات (من إلى) | 485-490 |
عدد الصفحات | 6 |
دورية | Journal of Optics A: Pure and Applied Optics |
مستوى الصوت | 4 |
رقم الإصدار | 4 |
المعرِّفات الرقمية للأشياء | |
حالة النشر | Published - يوليو 2002 |
منشور خارجيًا | نعم |
ASJC Scopus subject areas
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