IC or photonic circuit technology replaced

Computer slow, short standby time, the latest ipad4 body heat serious ... life, these problems of electronic products can be seen everywhere. Recently, a group headed by Yuan Xiaochu, a professor at the Institute of Information Science and Technology of Nankai University and a fellow at the Yangtze River, co-authored a research group with Professor Capasso at Harvard University, published a lecture titled " Reconstruction polarization-controlled surface plasmon-directional coupling "article, in the" photonic circuit "to replace the" integrated circuit "has made a major breakthrough in the field, is expected to solve the above problems.

It is understood that the traditional microelectronic technology is characterized by integrated electronic devices to provide higher information processing speed, storage density and on-chip integration and other capabilities, but by the nano-size bottleneck, integrated electronic devices have begun to be constrained. Another high-tech, optoelectronic technology, which is in parallel with the development of microelectronics technology, shows great potential and advantages in realizing the functions of integrated photonic circuit, interconnected optical circuit and optical computing. It may be a new generation to replace "integrated circuit" One of the key pillars of information technology, the key point of the technology is how to manipulate photons like the manipulation of electrons on a nano-scale highly integrated chip.

Surface Plasmon Resonance (SPPs) is a form of electromagnetic interaction between free electrons and photons in the surface area of ​​a metal, often referred to as an "information carrier that can carry photons through wires". It is in the process of developing a new generation of optoelectronic integrated Technology play an important role, but how to realize the "transmission control" of SPPs on the nano-scale chip is an international research hotspot in this field.

Yuan Xiaocong proposed a new SPPs coupling method in this article. Through a series of sub-wavelength "human" shaped micro-nano metal structures, the technical problems such as the polarization state of incident light seriously affecting the coupling efficiency of SPPs and the precise control of the SPP propagation direction are solved , A new mechanism of reconfigurable directional coupling of SPPs has been achieved. The research results have a significant positive effect on the application of SPPs such as SPPs generation, transmission, regulation, interconnection and detection at the level of micro / nano photonic chips. In order to develop SPPs for large-scale optoelectronic integration and Internet technology laid the foundation.

When talking about the future application prospect of "Photonic Loop", Yuan Xiaocong said that in recent years, how to make "photonic loop" instead of "integrated circuit" become a hot and difficult issue in the field of optics research. Electronic products chip faster, higher integration, the greater the energy consumption, the body is also easy to heat. The future of "photonic chip" to replace the traditional "electronic chip" has a wide range of applications. On the one hand, the "photon chip" is very helpful for reducing energy consumption and reducing pollution. On the other hand, since the photon propagation speed far exceeds that of the electron, the demand of the user for the operation speed and standby time of the electronic product will also be met.

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