Slab Waveguide Sensor with Left-handed Material Core Layer for Detection an Adlayer Thickness and Index

摘要

A four-layer slab waveguide structure with a lossy left-handed material (LHM) core layer is investigatedudas a surface sensor for detection any change in an adlayer thickness and refractive index. The sensitivitiesudof the effective refractive index to any change in the refractive index/thickness of the adlayer are derivedudand studied with the parameters of the LHM. It is found that a slight change in the real parts of theudpermittivity and permeability of the LHM can significantly improve the sensitivity of the proposed sensor.