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An optical device decomposes a beam into a Cartesian grid of Cheese spaces the same



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An optical device decomposes a beam into a Cartesian grid of Cheese spaces the same

Credit: University of Queensland

A research team has developed a light beam device that could lead to faster internet, clearer images of space and more detailed medical imaging.


University of Queensland researcher and optical engineer, Dr. Joel Carpenter with Nokia Bell Labs to build the device to get to grips with the challenge of splitting light to the shapes that our form is, namely modes.

"Splitting a beam of light into colors is easy because nature gives you the same free – think of a rainbow or when a light shines through glass at an angle," said Dr Carpenter.

"The mode sorter divides light beam into methods, instead of pixels like camera, and this would lead to higher quality visualization and communication. T

"Our device performs basic surgery in physics, so it seemed a bit strange to us that something like this did not already exist, because this topic has been researched worldwide for about 25 years."

The co-author of the study, Nicolas Fontaine of Nokia Bell Labs, said the device could bring many benefits.

"All of these methods can be an independent channel of information, and with this device we can pack hundreds of methods into one optical fiber," said Dr Fontaine.

Credit: University of Queensland

"This can greatly increase the amount of information that can travel through that fiber, resulting in faster internet speeds for more people.

"We hope that this device will assist many applications that work with light beams, because of its functionality and the relative simplicity that can be built."

Dr. Carpenter the sorter could improve the quality of imaging, from small biomedical images to large astronomical images.

"Just as an image can be made by adding a bunch of pixels together, we can make an image or a beam by adding a bunch of these methods together," he said.

  • An optical device decomposes a beam into a Cartesian grid of Cheese spaces the same

    The moderator divides light beam into methods. Credit: University of Queensland

  • An optical device decomposes a beam into a Cartesian grid of Cheese spaces the same

    Credit: University of Queensland

"Some things are easier to find if you look at the methods rather than pixels, because it displays the image in a different format.

"For example, methods could make it easier to find the image of a planet that turns a star far away."


An innovative technique for light shaping could solve bandwidth squeeze


More information:
Nicolas K. Fontaine et al. Laguerre-Gaussian mode sorter, Nature Communications (2019). DOI: 10.1038 / s41467-019-09840-4

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University of Queensland

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An optical device decomposes a beam into a Cartesian grid of Cheese spaces the same (2019, May 21)
retrieved 21 May 2019
o https://phys.org/news/2019-05-optical-device-decomposes-cartesian-grid.html

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