Coherent detector for the non-separability measurement of vectorial structured light [PDF]
Light: Science & ApplicationsAtmospheric turbulence distorts the complex wavefront of light in free-space optical communication systems, leading to bit errors and even communication interruptions.
Yize Liang +13 more
doaj +2 more sources
Applied Sciences, 2023 Phase mask optimization is one of the critical steps in designing a wavefront coding system to extend the depth of field (DoF). As a classical phase mask, a cubic phase mask was taken as an example. An improved particle swarm optimization (PSO) algorithm
Zeyu Huang +4 more
doaj +1 more source
Spectrally exclusive phase masks for wavefront coding [PDF]
Optics Letters, 2021 The use of phase masks is necessary for wavefront coding, and these are often based on optical path differences. However, the optical dispersion constrains the resulting device to operate within a restricted spectral bandwidth. Here we propose to remove this constraint due to sub-wavelength structuration of the surface.
Micke Boher +4 more
openaire +2 more sources
A Retroreflection Reduction Technique Based on the Wavefront Coded Imaging System
Crystals, 2021 A novel anti-cat-eye effect imaging technique based on wavefront coding is proposed as a solution to the problem of previous anti-cat-eye effect imaging techniques where imaging quality was sacrificed to reduce the retroreflection from the photoelectric ...
Qing Ye +5 more
doaj +1 more source
Acoustic wavefront manipulation via transmission-type labyrinth structure
Frontiers in Physics, 2022 In this work, a transmission-type labyrinth structure (LS) is proposed to construct subwavelength acoustic functional metasurfaces, through which various desirable acoustic wavefront manipulation can be achieved in a broadband from 2,700 Hz to 3,900 Hz ...
Rui Wang, Fengbao Yang
doaj +1 more source
Improved Exponential Phase Mask for Generating Defocus Invariance of Wavefront Coding Systems
Applied Sciences, 2022 Wavefront coding is an effective way to extend the depth of field of optical imaging systems. The invariant defocusing imaging feature can be obtained by adding a phase mask with a suitable form to the aperture of a typical optical system.
Jing Sheng +4 more
doaj +1 more source
Wavefront Control of 2D Curved Coding Metasurfaces Based on Extended Array Theory
IEEE Access, 2019 We extend the array theory to design 2D curved coding metasurfaces in order to achieve arbitrary wavefront control. The extended array theory establishes the relationship between wavefront and curved-surface, which provides a simple and effective method ...
Yang Zhou +8 more
doaj +1 more source
Time-sequential Pipelined Imaging with Wavefront Coding and Super Resolution [PDF]
, 2017 Wavefront coding has long offered the prospect of mitigating optical aberrations and extended depth of field, but image quality and noise performance are inevitably reduced. We report on progress in the use of agile encoding and pipelined fusion of image
Bradburn +6 more
core +1 more source
Investigation of extended depth-of-field f/8 camera with optimized cubic phase mask and digital restoration [PDF]
EPJ Web of Conferences, 2020 An investigation of extended depth-of-field camera with optimized phase mask and digital restoration is presented. The goal of this paper is to implement the wavefront coding technique without affecting much of the original design, and the design has ...
Chiu Po-Sheng +3 more
doaj +1 more source
Wavefront coding for laser protection of electro-optical imaging systems: a long-distance experimental study [PDF]
Frontiers of OptoelectronicsWavefront coding technology employs a phase mask to modulate the phase of incident light, thereby dispersing the laser spot on the detector and achieving laser protection for optical systems.
Ye Liu +7 more
doaj +1 more source