Porous Silicon Based Bragg-Grating Resonator for Refractive Index Biosensor

Autor: Sourabh Sahu, Jalil Ali, Preecha P. Yupapin, Ghanshyam Singh
Jazyk: angličtina
Rok vydání: 2018
Předmět:
Zdroj: Photonic Sensors, Vol 8, Iss 3, Pp 248-254 (2018)
Druh dokumentu: article
ISSN: 1674-9251
2190-7439
DOI: 10.1007/s13320-018-0459-z
Popis: Abstract In this work, we have evaluated the biosensing capability of the porous silicon (PSi) based sidewall Bragg-grating resonator. The approximation of the quasi-TE mode full vector for the eigenmode calculation is performed using a full vector mode solver. The transmission spectra of the device are evaluated using the transfer matrix method. We have observed a shift in the resonant band for a change in the refractive index of biomaterial in the upper cladding region. The theoretical value of the bulk sensitivity is calculated to be 387.48 nm/RIU. The device is suitable for biosensing application due to its ability of interacting signal with the infiltrated analytes in the PSi waveguide core.
Databáze: Directory of Open Access Journals
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