Electronics Letters · 1977 · 24 citations · 0 references
EngineeringElectrical EngineeringOpticsPhotonicsFiber OpticsFiber PropertiesFrequency MetrologyOptical FibersOptical MetrologyPhysical OpticsAttenuation MechanismsFiber AttenuationFiber Attenuation MechanismsFiber CharacterizationOptical Loss MechanismsSingle-mode FibersSingle-mode Optical Fibers
It is shown that methods of measuring the normalised frequency in single-mode fibres through observation of mode cut-off wavelengths give erroneous results. This is because the various loss mechanisms which exist in a practical fibre can have an appreciable eflfect near cut-off.