All-optically tuned delay characteristics of fibre Bragg grating

Abstract

Based on the nonlinear coupled-mode equations (NCMEs) of fibre Bragg grating (FBG), all-optically tuned delay is realized in two linearly apodized FBGs in simulation. The characteristics of tuneable delay under the control of input optical power are analyzed, and the sensitivity of delay time with optical power is discussed. Results show that the delay maximum can be obtained at the optimal points in connection with input power, operating wavelength and grating length.