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Analysis of Two Beam Interference Fringes Crossing Graded Index Optical Fibers Using Phase-Shifting Technique |
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PP: 1-7 |
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Author(s) |
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R. M. El-Agmy,
A. E. Elmahdy,
A. M. Abd-Rabou,
G. M. A. Gad,
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Abstract |
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| A mathematical expression for two-beam interference fringes crossing graded-index (GRIN) optical fibers is derived. The derived model determines the integrated optical path crossing the core of the GRIN optical fiber. The numerical evolution of the model at different values of the fiber exponent optical parameter α is discussed. We have verified the theoretical calculations experimentally using high precision phase-shifting interferometry (PSI). The main advantage of the derived model leads to accurate determination of the propagation optical parameters of GRIN optical fibers. |
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