Theoretical model for the transverse interference pattern of GRIN optical fiber using a laser sheet of light

A new technique (El-Ghandoor et al., Opt. Laser Technol. 31(7) (1999) 481–488) has been applied to study the shape of transverse interference fringes, instead of multiple beam Fizeau fringes (Marhic, Stein, Appl. Phys. Lett. 35 (1975) 1678–1682), from a GRIN optical fiber. In this technique, a laser...

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Bibliographic Details
Published in:Optics and laser technology 2000-06, Vol.32 (4), p.281-286
Main Authors: El-Ghandoor, H, Nasser, Ibraheem, Rahman, M.A.Abd-El, Hassan, R
Format: Article
Language:English
Subjects:
Applied sciences
Circuit properties
Electric, optical and optoelectronic circuits
Electronics
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Geometrical optics
Gradient-index (GRIN) fiber devices
GRIN optical fiber
Integrated optics. Optical fibers and wave guides
Light sheet
Optical and optoelectronic circuits
Optical modeling
Optics
Physics
Transverse interference
Wave fronts and ray tracing
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Summary:A new technique (El-Ghandoor et al., Opt. Laser Technol. 31(7) (1999) 481–488) has been applied to study the shape of transverse interference fringes, instead of multiple beam Fizeau fringes (Marhic, Stein, Appl. Phys. Lett. 35 (1975) 1678–1682), from a GRIN optical fiber. In this technique, a laser light sheet is used to illuminate and pass directly through the optical fiber. Theoretical expressions are derived for the optical path differences of three groups of interference beams. The first one passes through the cladding, the core, and then the cladding once again; the second passes through the cladding only, and the third passes through the surrounding air. Theoretical expressions for the shape of transverse interference fringes formed across isotropic non-absorbing optical fibers are also calculated.
ISSN:0030-3992
1879-2545
DOI:10.1016/S0030-3992(00)00068-2