Space-multiplexed diffractive optical device based on Talbot effect

Enwen Dai; Changhe Zhou; Peng Xi; Liren Liu

doi:10.1117/12.481484

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Abstract

In this paper we propose a space multiplexed diffractive optical device based on Talbot effect. Several different diffractive optical elements (DOEs) with the same size and physical aspect, such as Dammann grating, computergenerated hologram (CGH), are arranged interleavely and periodically in the DOE plane to form a multifacet DOE. Then it is illuminated by the corresponding Talbot illuminator. Each of the DOEs in the multifacet DOE can be triggered respectively by the irradiance of the Talbot illuminator. In our experimental setup, two CGHs with the period size of 0.5x0.5mm and pixel size of 5x5µm are incorporated into one multiplexed hologram according to the specific encoding periodic pattern that can be realized with a Talbot array illuminator. The corresponding reconstructed images have been obtained selectively when the relative position of the Talbot illuminator and the multifacet DOE is properly changed, which confirm the feasibility of our method. This device can be used in optical information and optical interconnection.

Citation Download Citation

Enwen Dai, Changhe Zhou, Peng Xi, and Liren Liu "Space-multiplexed diffractive optical device based on Talbot effect", Proc. SPIE 4924, Holography, Diffractive Optics, and Applications, (30 August 2002); https://doi.org/10.1117/12.481484

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