According to the report of the Physicist Organization Network on September 3 (Beijing time), an international research team at Swinburne University of Technology in Australia and Friedrich Alexander University (FAU) in Erlangen-Nuremberg, Germany, imitated butterfly wings. The microscopic structure has developed a nanoscale photonic crystal device that is smaller than the width of human hair, and can be applied to both linear and circular polarized light, making optical communication faster and safer.
The photonic crystal can simultaneously split the left and right circular polarized light. Its design is inspired by the card ash butterfly, also known as the yellow star green small gray butterfly. Its wings have three-dimensional nanostructures that give it vibrant green. Other insects also have nanostructures that provide color, but the card has an important difference. Dr. Mark Turner of Swinburne University said: "The wings of this butterfly contain a huge array of interconnected nanoscale coil springs that form a unique optical material. We used this concept to develop photonic crystal devices."
The photonic crystal is equivalent to a micro-polarized beam splitter. Polarizing beamsplitters are used in modern technologies such as telecommunications, microscopes and multimedia. However, natural crystals are only suitable for linearly polarized light and cannot be used for circularly polarized light. The researchers used three-dimensional laser nanotechnology to make the photonic crystals have characteristics that natural photonic crystals do not have, and thus can be applied to circularly polarized light. This miniature device contains more than 750,000 tiny polymer nanorods.
Professor Gu Min, director of the Microphotonics Center at Swinburne University, said: “We believe that we have created the first nanoscale photonic crystal chiral beam splitter. It may be a useful electronic component for the development of integrated photonic circuits. , It plays an important role in optical communications, imaging, computer information processing technology and sensing.This technology offers new possibilities for turning to nanophotonic devices, enabling us to develop optical chips that can overcome the bandwidth bottleneck of ultra-high-speed optical networks. one step closer."
The research results have been published in the latest issue of the journal Nature Photonics. (Reporter Hualing)
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