Polymer integrated waveguide optical biosensor by using spectral splitting effect
| Autor: | Geert Morthier, Shu-Hui Bo, Xiuyou Han, Mingshan Zhao, Xiaonan Han, Yuxin Liang, Zhenlin Wu, Yuchen Shao, Teng Jie |
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| Jazyk: | angličtina |
| Předmět: |
lcsh:Applied optics. Photonics
Technology and Engineering DEVICES Materials science Optical biosensor Physics::Optics 02 engineering and technology Mach–Zehnder interferometer 01 natural sciences CRITICAL SENSITIVITY law.invention Slot-waveguide Optics DESIGN law MACH-ZEHNDER INTERFEROMETER spectral splitting business.industry 010401 analytical chemistry lcsh:TA1501-1820 SENSOR integrated waveguide sensitivity 021001 nanoscience & nanotechnology Cladding (fiber optics) Atomic and Molecular Physics and Optics 0104 chemical sciences Electronic Optical and Magnetic Materials Interferometry Wavelength Physics and Astronomy 0210 nano-technology business Biosensor Waveguide Refractive index |
| Zdroj: | PHOTONIC SENSORS Photonic Sensors, Vol 7, Iss 2, Pp 131-139 (2017) |
| ISSN: | 1674-9251 2190-7439 |
| DOI: | 10.1007/s13320-017-0395-3 |
| Popis: | The polymer waveguide optical biosensor based on the Mach-Zehnder interferometer (MZI) by using spectral splitting effect is investigated. The MZI based biosensor has two unequal width sensing arms. With the different mode dispersion responses of the two-arm waveguides to the cladding refractive index change, the spectral splitting effect of the output interference spectrum is obtained, inducing a very high sensitivity. The influence of the different mode dispersions between the two-arm waveguides on the spectral splitting characteristic is analyzed. By choosing different lengths of the two unequal width sensing arms, the initial dip wavelength of the interference spectrum and the spectral splitting range can be controlled flexibly. The polymer waveguide optical biosensor is designed, and its sensing property is analyzed. The results show that the sensitivity of the polymer waveguide optical biosensor by using spectral splitting effect is as high as 104 nm/RIU, with an improvement of 2–3 orders of magnitude compared with the slot waveguide based microring biosensor. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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