Abstract

A novel self-apodization effect that occurs in tapered fiber Bragg gratings (TFBG) is presented. The detailed theoretical analysis and experimental results show that only by feeding the electromagnetic wave into the grating from the taper waist side, the significant reduction of oscillations in a group delay response of TFBG is achieved. Thus, the apodization effect is achieved without any additional technological processes during the grating inscription. Moreover, a counterdirectionally written tapered and chirped fiber Bragg grating that has a negative slope of the group delay response and exhibits self-apodization effect is proposed.

© 2018 IEEE

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