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Updated: Jul 25, 2025
Writing Bragg Gratings in Multicore Fibers
Published on: April 20, 2016
Color Reproduction by Multi-Wavelength Bragg Diffraction of White Light
Alexander Machikhin1, Alina Beliaeva1,2,3, Galina Romanova2
1Acousto-Optic Spectroscopy Laboratory, Scientific and Technological Center of Unique Instrumentation of the Russian Academy of Sciences, 15 Butlerova, 117342 Moscow, Russia.
Abstract:
Accurate color reproduction is highly important in multiple industrial, biomedical and scientific applications. Versatile and tunable light sources with high color-rendering quality are very much in demand. In this study, we demonstrate the feasibility of multi-wavelength Bragg diffraction of light for this task. Tuning the frequencies and amplitudes of bulk acoustic waves in the birefringent crystal demonstrates high precision in setting the number, wavelengths and intensities of the monochromatic components necessary to reproduce a specific color assigned according to its coordinates in the CIE XYZ 1931 space. We assembled a setup based on multi-bandpass acousto-optic (AO) filtration of white light and verified the reproduced color balance in multiple experiments. The proposed approach delivers almost full coverage of the CIE XYZ 1931 space and facilitates building compact color reproduction systems (CRSs) for various purposes.
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