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We present the design and analysis of the Refractive Index sensor having the discontinuity between sensing region and cladding area by large core diameter. If sensing region is placed in different refractive index medium then the cladding, the modal field distribution changes. The overlap of modal fields in the cladded region and the sensing region gives an estimate of fractional power transfer from...
We present a novel co-axial dual core large-mode-area (LMA) fiber design for refractive index sensing. In a dual-core fiber there is resonant coupling between the two cores, which is strongly affected by the refractive index (RI) of the outermost region. The transmittance of the fiber, therefore, varies sharply with the refractive index of surrounding medium. This characteristic of the proposed structure...
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