Sensitivity estimation of metamaterial loaded planar waveguide
Sensitivity of a three and four layer waveguide having metamaterial film is derived and compared. Since, the metamaterials possess unconventional behaviour due to their structural parameters, therefore the sensitivity of proposed three and four layer metamaterial waveguide has been calculated using their respective dispersion relations. By comparing obtained results with the existing results, it is found that the film layer of metamaterial able to enhance the cover layer sensitivity and adlayer sensitivity. Also, the sensitivity of the waveguide sensor depends on both the adlayer thickness and the film thickness but film thickness affects the sensitivity prominently.
KeywordsMetamaterials Sensitivity Three layer planar waveguides Four layer planar waveguides
The present work is partially supported by the Department of Science and Technology (DST), New Delhi, India under the fast track young scientist Scheme No. SB/FTP/ETA-0478/2012.
- Sunagawa, H., Suhara, T., Nishihara, H.: Optical Pick Up Apparatus for Detecting and Correcting Focusing and Tracking Errors in Detecting Recorded Signal. US Patent No. 5,153, 860 Assigned to Fuji Photo Film Co Issued 6 Oct (1992)Google Scholar
- Tiefenthaler, K., et al.: Optical Sensor for Selective Detection of Substances and/or for the Detection of Refractive Index Changes in Gaseous, Liquid, Solid and Porous Samples. United States Patent (19), Patent No. 4815, 843 (1989)Google Scholar