METHOD FOR MANUFACTURING MULTI-DIMENSIONAL TARGET WAVEGUIDE GRATING AND VOLUME GRATING WITH MICRO-STRUCTURE QUASI-PHASE-MATCHING

摘要

With micro-structure waveguide optical grating and volume grating standard in match. Common waveguide grating is used as seed grating, and on this basis, and two dimension or three-dimensional sampling structure modulation have refractive index, i.e. sampling grating is formed. Sampling grating includes several shadow gratings, and one of shadow grating is chosen as target Equivalent grating. Sampling grating includes that Fourier components change and sampling structure [formula 2] in many orders, shadow grating, corresponding grating wave vector [formula 1] and all shadow gratings of grating profile. If seed light lattice wave swears that two dimension needed for [formula 3] or three-dimensional grating wave vector mismatch, the sampling structure of the Fourier component Fourier components of certain periodic structure is used to compensate for wave vector mismatch. The many any grating profiles for being applied to design and manufacture Multidimensional object waveguide optical grating and volume grating of manufacture, can simplify manufacturing process, and also make the grating photonic device of various gratings.