Micro Holographic 1 × 2 channel fiber coupler and its performance analysis on various recording materials

Holographic Optical Elements (HOEs) are gaining much importance and finding newer and better application in the areas of optical fiber communication and optical information processing systems. Optical communication and information systems require smaller and efficient elements of desired characteristics and transfer functions. Micro Holographic Optical Element (MHOEs) can effectively convert in to a 1 × 2 coupler, having specific focusing and diffraction characteristics. In this study, micro holographic couplers of 1 × 2 having specific focusing and diffraction characteristics were recorded in different holographic recording media. Variation in coupling factor and insertion loss of these elements was studied.