Author/Authors :
J.، Zhang, نويسنده , , P.، Shum, نويسنده , , X.P.، Cheng, نويسنده , , N.Q.، Ngo, نويسنده , , S.Y.، Li, نويسنده , , J.H.، Ng, نويسنده ,
Abstract :
A method to realize the practical flat-band long-period fiber grating (LPG) fabrication is proposed. Based on the results obtained from the layer-peeling method, we have analyzed the structure of the designed flat-band LPG. We found that the designed LPG is an apodized LPG with sinc-like envelope and a constant period, while there exists a (pi) phase shift at each zero point of the apodization profile. For the first time, a flat-band LPG is realized in fabrication. The experimental result shows a good match with our theoretical analysis.
