Sahu, S. and Ali, J. and Singh, G. (2017) Refractive index biosensor using sidewall gratings in dual-slot waveguide. Optics Communications, 402 . pp. 408-412. ISSN 0030-4018
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Abstract
This paper presents an optical biosensor using sidewall grating in dual slot waveguide, modeled on silicon-on-insulator (SOI) platform. By optimizing the geometric parameters of the device, the spectral response is tailored to obtain a sharp resonant peak with high transmissivity that also enhances the limit-of-detection. The device detects the shift in resonant wavelength on a variation of the biomaterial refractive index. The simulation study has performed using the transfer matrix method. The obtained characteristics of the sensors include linear response to a change in refractive index of biomaterial, limit of detection of the order of 10−6 and ease of fabrication. The device performance has also compared with other SOI resonator structures like photonic crystal waveguide, sub-wavelength grating, ring resonator and grating resonator.
Item Type: | Article |
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Uncontrolled Keywords: | Biosensor, Bragg grating, Transfer matrix method |
Subjects: | Q Science > Q Science (General) |
Divisions: | Science |
ID Code: | 77000 |
Deposited By: | Fazli Masari |
Deposited On: | 30 Apr 2018 14:32 |
Last Modified: | 30 Apr 2018 14:32 |
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