Analysis of dynamic optical arbitrary waveform generation based on three FBG arrays

A dynamic optical arbitrary waveform generation (O-AWG) structure based on three fiber Bragg grating (FBG) arrays is proposed and its performances are analyzed. The first two arrays are used for amplitude control. The third array is used for phase control. Dynamic O-AWG can be realized by adjusting fiber stretchers (FSs) in the second array and the third array. In this paper, it is demonstrated that the phase controller is independent from the amplitude controller to achieve less complicated FSs adjustment and more phase distortion tolerance. Moreover, phase controller can be used for compensating dispersion caused by the first two arrays, and it also can be used for pulse repetition rate multiplication (RRM), which is preferable to amplitude controller for RRM with regard to phase sensitivity.