A compact and ultra high sensitive RI sensor using modal interference in an integrated optic waveguide with metal under-cladding
| Autor: | Ranjeet Dwivedi, Arun Kumar |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Imagination
Chemical substance Materials science Modal interference media_common.quotation_subject 01 natural sciences 010309 optics Metal Optics 0103 physical sciences Materials Chemistry Electrical and Electronic Engineering Instrumentation media_common business.industry 010401 analytical chemistry Metals and Alloys Condensed Matter Physics Cladding (fiber optics) 0104 chemical sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials Modal visual_art visual_art.visual_art_medium Science technology and society business Refractive index |
| Zdroj: | Sensors and Actuators B: Chemical. 240:1302-1307 |
| ISSN: | 0925-4005 |
| DOI: | 10.1016/j.snb.2016.09.103 |
| Popis: | We propose a compact and ultra high sensitive refractive index (RI) sensor based on modal interference in an integrated optic waveguide with a metal under-cladding (MUC). It has been shown that the MUC significantly increases the fractional modal power in the ambient medium, affecting the higher order modes much more compared to the lower ones. This results in an ultrahigh dependence of the modal interference on the ambient RI change. The RI sensitivity of the proposed sensor structure is found to vary in the range 5.28–71.94 μm/RIU, for the RI range 1.33–1.37, which is the highest reported RI sensitivity, achieved in modal interference based sensors till date. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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