Interferometric determination of gamma radiation effects on optical parameters of a GRIN optical fibre

M. Medhat; S. Y. El-Zaiat; Saleh M. Abdou; Amr Radi; M. F. Omar

doi:10.1088/1464-4258/4/4/320

Interferometric determination of gamma radiation effects on optical parameters of a GRIN optical fibre

M. Medhat^*, S. Y. El-Zaiat, Saleh M. Abdou, Amr Radi, M. F. Omar

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

15 Citations (Scopus)

Abstract

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.

Original language	English
Article number	320
Pages (from-to)	485-490
Number of pages	6
Journal	Journal of Optics A: Pure and Applied Optics
Volume	4
Issue number	4
DOIs	https://doi.org/10.1088/1464-4258/4/4/320
Publication status	Published - Jul 2002
Externally published	Yes

Keywords

Dispersion
GRIN fibre
Gamma radiation
Interferometric
Optical parameters
Refractive index

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics

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10.1088/1464-4258/4/4/320

Cite this

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title = "Interferometric determination of gamma radiation effects on optical parameters of a GRIN optical fibre",

abstract = "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.",

keywords = "Dispersion, GRIN fibre, Gamma radiation, Interferometric, Optical parameters, Refractive index",

author = "M. Medhat and El-Zaiat, {S. Y.} and Abdou, {Saleh M.} and Amr Radi and Omar, {M. F.}",

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AU - Medhat, M.

AU - El-Zaiat, S. Y.

AU - Abdou, Saleh M.

AU - Radi, Amr

AU - Omar, M. F.

PY - 2002/7

Y1 - 2002/7

N2 - 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.

AB - 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.

KW - Dispersion

KW - GRIN fibre

KW - Gamma radiation

KW - Interferometric

KW - Optical parameters

KW - Refractive index

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ER -

Interferometric determination of gamma radiation effects on optical parameters of a GRIN optical fibre

Abstract

Keywords

ASJC Scopus subject areas

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