Optical synthesis of the transfer function by phase-shift keying of a dynamic Bragg filter

In this paper, we present the novel technique for the optical synthesis of the transfer function of a spectral dynamic Bragg filter. The technique of phase-shift keying consists in the formation of a reflective grating comprising several cells. We present the generalization of Kogelnik´s coupled wave theory for precise calculations of the transfer function. In the experimental verification a photorefractive BaTiO₃:Co crystal as a dynamic holographic media was used.