Graphene Oxide Effect on Improvement of Silver Surface Plasmon Resonance D-Shaped Optical Fiber Sensor
| Autor: | Iraj Sadegh Amiri, Nurul Syazwani Rohizat, Nur Aina’a Mardhiah Zainuddin, Sofiah Atirah Raya, Siti Anis Khairani Alwi, M.S. Mani Rajan, Rozalina Zakaria |
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| Rok vydání: | 2019 |
| Předmět: |
Optical fiber
Materials science Graphene business.industry Oxide 02 engineering and technology 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Atomic and Molecular Physics and Optics law.invention 010309 optics chemistry.chemical_compound chemistry law Fiber optic sensor 0103 physical sciences Optoelectronics Electrical and Electronic Engineering Surface plasmon resonance 0210 nano-technology business |
| Zdroj: | Journal of Optical Communications. 44:53-60 |
| ISSN: | 2191-6322 0173-4911 |
| DOI: | 10.1515/joc-2019-0094 |
| Popis: | This research focuses on the side-polished Single-Mode Optical Fibers (SMOF) as refractive index (RI) sensor utilizing properties of Surface Plasmon Resonance. The SMOF with cladding stripped off shows a D-shaped optical fiber with high sensitivity functionalization. Here we show silver protected by graphene oxide (GO) as viable candidates. A few layers of GO on top of silver thin layer were applied as a material to overcome silver coating degradation process. This silver/GO sensor was characterized using various RIs of analyte likely deionized water and alcohol solutions. Sensor with GO has shown fast response and high sensitivity in respect of RI, where sensitivity increases in range from 1.30 to 1.34 RIU (refractive index unit). This device shows highest sensitivity of up to 833.33 nm/ RIU. The polishing process using SMOF stops at few microns above the core of the fiber with the drop of output power fixed to be 1 dB as an indication to standardize the amount of cladding been removed. The thickness of 30 nm Ag was deposited using electron beam evaporation method on D-shaped optical fiber with subsequent protected layer of GO in solutions form. The use of COMSOL Multiphysics has also been carried out to observe numerical findings. The response of the GO has shown a sensitivity improvement which proves new promising approaches for the newly developed sensors. |
| Databáze: | OpenAIRE |
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