1997 · 12 citations · 0 references
Natural SciencesMaterials EngineeringMaterials ScienceOptical MaterialsPhotonicsSpectroscopyFiber OpticsOptical FibersOptical Properties Of MaterialsOptical SensingOptical SensorsRefractive IndexFiber Bragg GratingsGraded-index FibersMode ExcitationMultimode FibersMultimode Optical FibersMultiple ReflectionSensor ApplicationsSpectral Characteristics
Bragg gratings formed in multimode graded-index fiber showed multiple reflection spectra. The reflectivities were 96.6% for few-mode excitation and 36% for uniformly multimode excitation. Effects of bending and sensor applications are also discussed.