Fig. 1. Calculation transmission spectrum of TFBG at 1.5 μm band at tilt angle of 4°

Fig. 2. Temperature characteristics of TFBG. (a) Shift of spectra with temperature; (b) shift of wavelength with temperature

Fig. 3. Experimental setup for the suppression of SBS in fiber

Fig. 4. Measured spectra of TFBG in SMF-28e. (a) General vision; (b) enlarged vision

Fig. 5. Measured optical spectra at the end of 150 m SMF-28e fiber and port 3 of the circulator

Fig. 6. Experimental results. (a) Changing of the forward output signal and backward Stokes power with the input power with or without TFBG; (b) previous results^[20]; (c) Stokes wave filtering ratio and (d) insertion loss of TFBG with the input laser power

Fig. 7. Measured stability of the output signal with TFBG at the maximum input power