After the functionalization of the fiber surface using Eudragit L100Ĭopolymer, a label-free IgG/anti-IgG bioassay was realized for analyzing the antigen/antibody interaction following the Increasing the RI sensitivity of these sensors. Types of not-coated LPGs, in which the coupling occurs with increasing cladding mode orders, were manufactured for Surface plasmon resonance, interferometric and in-fiber configurations, and resonating structures. This is an emergent, alternative choice with respect to other label-free optical systems, such as Occurring along the grating region can be evaluated as a refractive index (RI) change, which modifies the transmission Abstract Long period fiber gratings (LPGs) have recently been proposed as label-free biosensors.
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