Increase of spatial resolution of the optical spectrum analyzer

V. G. Kolobrodov; G. S. Tymchik; M. S. Kolobrodov

doi:10.1117/12.2551636

6 February 2020 Increase of spatial resolution of the optical spectrum analyzer

V. G. Kolobrodov, G. S. Tymchik, M. S. Kolobrodov

Proceedings Volume 11369, Fourteenth International Conference on Correlation Optics; 113690E (2020) https://doi.org/10.1117/12.2551636
Event: Fourteenth International Conference on Correlation Optics, 2019, Chernivtsi, Ukraine

Abstract

In this article, the coherent optical spectrum analyzer (COSA), which consists of a spatial light modulator, a Fourier lens and a digital camera is explored. Spatial resolution (spatial spectral resolution), which is determined by the parameters of the components of the spectrum analyzer is one of the main characteristics of the COSA. The analysis of the COSA model allowed to develop a method for calculating the spatial spectral resolution taking into account the phase position of the diffraction maximums relative to the pixels of the matrix detector. When the modulator is illuminated with an inclined plane wave, the resolution of the spectrum analyzer can be doubled. The influence of modulator parameters and lens aberrations on the spectrum analyzer resolution is investigated.

Citation Download Citation

V. G. Kolobrodov, G. S. Tymchik, and M. S. Kolobrodov "Increase of spatial resolution of the optical spectrum analyzer", Proc. SPIE 11369, Fourteenth International Conference on Correlation Optics, 113690E (6 February 2020); https://doi.org/10.1117/12.2551636

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