A Novel Birefrigent Photonic Crystal Fiber Surface Plasmon Resonance Biosensor

Robert Otupiri,E. Akowuah,S. Haxha,H. Ademgil,F. AbdelMalek,A. Aggoun

Published 2014 in IEEE Photonics Journal

ABSTRACT

A numerical analysis of a novel birefringent photonic crystal fiber (PCF) biosensor constructed on the surface plasmon resonance (SPR) model is presented in this paper. This biosensor configuration utilizes circular air holes to introduce birefringence into the structure. This PCF biosensor model shows promise in the area of multiple detection using HE<sup>x</sup><sub>11</sub> and HE<sup>y</sup><sub>11</sub> modes to sense more than one analyte. A numerical study of the biosensor is performed in two interrogation modes: amplitude and wavelength. Sensor resolution values with spectral interrogation yielded 5 × 10<sup>-5</sup> RIU (refractive index units) for HE<sup>x</sup><sub>11</sub> modes and 6 × 10<sup>-5</sup> RIU for HE<sup>y</sup><sub>11</sub> modes, whereas 3 × 10<sup>-5</sup> RIU for HE<sup>x</sup><sub>11</sub> modes and 4 × 10<sup>-5</sup> RIU for HE<sup>y</sup><sub>11</sub> modes are demonstrated for the amplitude interrogation.

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