Sensitivity Estimation of Bragg Fibers having Double Defect Layers

The sensitivity of two Bragg fibers having symmetric and asymmetric double defect layers are studied, optimized, and compared. The thicknesses of symmetric defects are 267.24 nm and asymmetric defects are 113.30 nm and 267.24 nm. Two sharp defect modes arise due to the resonance of core and defect modes. The sensitivity of proposed waveguides depends on the separation between defect layers. Right defect mode of symmetric defected Bragg fiber shows maximum sensitivity.