The notched filtering characteristics of stratified volume holographic grating

Utilizing the tool of beam propagation method (BPM) to calculate the zeroth order diffraction beam intensity, we find SVHG displays notched diffraction response as a function of the readout wavelength. Using the method of SA and considering the variance of refractive index as the readout wavelength changes, a practiced notch filter can be designed and the period of the filter is discussed. Foundation item: Supported by the National Natural Science Foundation of China (69607005) Biography: LI Xiang-yang (1974-), male, Master candidate: Research direction: message optics.