Research on the air core Bragg fiber with defect state

A new method based on the Transfer Matrix Theory of Bragg fiber to research a Bragg fiber with defect state has been developed in this paper. The distribution of the electromagnetic field in the Bragg fiber is analyzed, and the loss and efficiency of the Bragg fiber are also estimated based on optical power confinement factor Γ. Thereby, the influence of the defect for transmitting characteristics in Bragg fiber has been researched.