OFweek Semiconductor Lighting Network An international research team at Swinburne University of Technology in Australia and Friedrich Alexandria University (FAU) in Erlangen-Nuremberg, Germany, developed a hairline smaller than human hair by mimicking the microstructure of butterfly wings. The nanometer-scale photonic crystal device of width can be applied to both linear and circular polarized light, making optical communication faster and safer.
The photonic crystal can split the left and right circularly polarized light at the same time, and its design is inspired by the card gray butterfly, also known as the yellow star green small gray butterfly. Its wings have three-dimensional nanostructures that give it a vibrant green color. Other insects also have nanostructures that provide color, but the card gray butterfly has an important difference. Dr. Mark Turner of Swinburne University said: "The wings of this butterfly contain a huge array of interconnected nanoscale helical springs that form a unique optical material. We use this concept to develop photonic crystal devices."
The photonic crystal is equivalent to a micro-polarization beam splitter. Polarizing beamsplitters are used in modern technologies such as telecommunications, microscopy and multimedia. However, natural crystals are only suitable for linearly polarized light and cannot be used for circularly polarized light. Researchers use 3D laser nanotechnology to make the photonic crystals have properties that are not found in natural photonic crystals, making them suitable for circularly polarized light. This micro device contains more than 750,000 tiny polymer nanorods.
Professor Gu Min, director of the Micro-optoelectronics Center at Swinburne University, said: "We believe that the first nanoscale photonic crystal chiral spectroscope has been created. It is likely to be a useful electronic component for the development of integrated photonic circuits. It plays an important role in optical communication, imaging, computer information processing technology and sensing. This technology provides 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."
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