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Measurement of refractive-index profiles in optical-fibre preforms by spatial-filtering technique
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1980
Year
PhotonicsOptical MaterialsEngineeringOphthalmologyMeasurementOptical PropertiesOptical Transmission SystemFiber Optic SensingOptical-fibre PreformNondestructive TechniqueFiber OpticsSpatial FilteringOptical SystemsFiber OpticRefractive-index ProfilesFiber-optic Communication
A nondestructive technique based on spatial filtering is presented for measuring the refractive-index profile in an optical-fibre preform. The method is simple, accurate and has sufficient resolution to enable detailed profiles of single-mode preforms to be obtained.