Transmission of phase informative optical signal through the optically inhomogeneous medium

Liudmyla Derzhypolska; Andrii Derzhypolskyi; Oleksandr Gnatovskyi

doi:10.1117/12.2615216

20 December 2021 Transmission of phase informative optical signal through the optically inhomogeneous medium

Liudmyla Derzhypolska, Andrii Derzhypolskyi, Oleksandr Gnatovskyi

Proceedings Volume 12126, Fifteenth International Conference on Correlation Optics; 121260E (2021) https://doi.org/10.1117/12.2615216
Event: Fifteenth International Conference on Correlation Optics, 2021, Chernivtsi, Ukraine

Abstract

In the paper described is a method of transmission of phase information by an optical signal which propagates through an optically inhomogeneous medium. Phase information is represented as an interference pattern of two states of an object that is deformed between state fixations. It is proposed to pass signal and reference beams through an optically inhomogeneous path in the same direction when recording holograms of states. In this implementation, an optical signal which carries information in the form of a system of interfering beams (holograms) is subject to minimal interference. And these holograms contain undistorted information about the wavefronts of the beams. Further mathematical processing (image addition and noise separation) allows to obtain the desired information about the deformation of the object. Optical inhomogeneities in the work are represented in thin diffuser approximation (Random Phase Diffuser), where RPD is described as an ensemble of point retranslates. Each of these retranslates at any point of the cross section of the beam transmit the amplitude of the field and at the same time adds a random stationary change to the phase. This model of optical inhomogeneities is of practical interest, because such a representation corresponds to the description of a single-mode regular fiber bundle, which can be used in real experiments to obtain information about the state of the object from hard-to-reach places.

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Liudmyla Derzhypolska, Andrii Derzhypolskyi, and Oleksandr Gnatovskyi "Transmission of phase informative optical signal through the optically inhomogeneous medium", Proc. SPIE 12126, Fifteenth International Conference on Correlation Optics, 121260E (20 December 2021); https://doi.org/10.1117/12.2615216

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KEYWORDS

Holograms

Diffusers

Image processing

Matrices

Wavefronts

Holographic interferometry

Holography

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