Comparison of 2-D planar approximation and rigorous 3-D theoretical analysis of a fiber optic surface Plasmon resonance sensor utilizing a Bragg grating
B. Špačková, J. Homola, Institute of Photonics and Electronics AS CR (Czech Republic)
We present theoretical analysis of a fiber optic surface plasmon resonance (SPR) sensor utilizing a Bragg grating using the rigorous 3-D numerical modeling and the approximation of the equivalent planar (2-D) waveguide. It is demonstrated that the 2-D approach provides a good estimate of sensitivity of the sensor; however, it fails to describe the complex behavior of the spectral transmission.
