Abstract
In late 1960’s and early 1970’s there has been a great interest among researchers in photopolymer material as new entrant for holographic recording media possessing very high resolution. Daring this period many research articles were published by several authors(1–4) exhibiting unusual behaviour of these materials. But they ended up with its nonbinding and degradation properties. However, in the recent past, with the exhibit of 3rd order non-linearities in organic polymers, interest has been reviewed for its application in HOE, phase conjugate mirrors(5), wavelength multiplexer/demultiplexer & more recently in non-linear grating/directional coupler and fast switching devices where the feedback gratings using PMMA films are used(6). This communication describes few characteristic properties such as surface as well as index modulation in a phase hologram with a volume effect(4) recorded in photopolymer media. This is designed for grating coupler (Fig.1) in coupling a light beam from a laser into a thin film waveguide, where the diffraction efficiency play an effective role.
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References
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© 1991 Springer Science+Business Media New York
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Kathuria, Y.P. (1991). Photopolymer Trends in Optics. In: Prasad, P.N., Nigam, J.K. (eds) Frontiers of Polymer Research. Springer, Boston, MA. https://doi.org/10.1007/978-1-4615-3856-1_20
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DOI: https://doi.org/10.1007/978-1-4615-3856-1_20
Publisher Name: Springer, Boston, MA
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