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Related Experiment Video

Updated: May 27, 2026

Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping

Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping

Published on: March 20, 2017

Variations in the point spread function characteristics of wavelengths for a wavefront coding imaging system.

Rongfu Zhang¹, Kang Lu

¹School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China. zhangrongfu@usst.edu.cn

|December 6, 2011

Summary

Wavefront coding imaging systems maintain a consistent point spread function (PSF) shape across wavelengths. However, axial chromatic aberration causes PSF position shifts, potentially leading to color traces in recombined images.

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Area of Science:

Optical Engineering
Image Processing
Computational Imaging

Background:

Wavefront coding (WFC) is an advanced imaging technique.
Understanding wavelength-dependent performance is crucial for WFC systems.

Purpose of the Study:

Investigate the point spread function (PSF) characteristics across different wavelengths in a WFC system.
Analyze the impact of chromatic aberration on WFC imaging.

Main Methods:

Simulated or experimental analysis of PSF behavior.
Evaluation of image restoration using a single filter across multiple wavelength channels.

Main Results:

The shape of the point spread function (PSF) remains largely invariant with respect to wavelength.
Axial chromatic aberration causes a shift in the PSF's axial position.
Restoring separated spectral channels with a single filter can introduce color traces.

Conclusions:

WFC systems exhibit remarkable wavelength-invariant PSF shapes.
Axial chromatic aberration is a key factor affecting PSF positioning in WFC.
Careful filter design or post-processing is needed to mitigate color artifacts in broadband WFC imaging.