Karlsruhe Institute of Technology (KIT) researchers have successfully developed a method for detecting the optical data path innovative photodetector, occupying an area of less than 100 sq. M …
Glass fibers (glass fibers) may become the information age transport highway ── Karlsruhe Institute of Technology (Karlsruhe Institute of Technology, KIT) researchers have successfully developed a method for detecting the optical data path innovative photodetector (photo detector), the core components of glass fiber receiving end; this achievement sets a new standard for the size of such elements, the researchers claim that its footprint is less than 100 square microns (micrometer), it is ideal for integration into an IC program, but more impressive is its data transfer rate.
KIT researchers Sascha Mühlbrandt claims the new photodetector is currently the world’s smallest optical data transmission element, can bring significant performance improvements to optical communication systems because the components can be integrated into a large number of optical components in the semiconductor; in the team’s experiment, the researchers reached a maximum transfer rate of 40Gbps, enough time in less than a second complete video content delivery within a DVD. Mühlbrandt convinced that its throughput is still potential for further increase: “Within this plasma photoemission detector (plasmonic internal photoemission detector, PIPED) ever achieve such a high data transmission rate of the minimum size of the detector;” He said the element 100 times smaller than conventional optical detectors.
This light detector ultra-small size, the advantages can be integrated with a downstream circuit pretreatment (downstream preprocessing) on a single CMOS chip; microstructure KIT Institute of Technology’s (Institute for Microstructure Technology) project coordinator Manfred Kohl said this innovative plasma component can support high-speed data transfer between chips inside computers, opening the possibility of combining electronic and optical components advantages, higher than that of pure electronic parts data throughput.
In order to combine optics and electronics in a very small space, KIT developed a light detector utilizes plasma surface polaron (surface plasmon polariton), capable of metal dielectric boundary (metallic-dielectric boundary) electromagnetic surface is highly concentrated. This new kind of plasma converter to convert the signal directly to the metal surface is the wavelength of light is based, also known as light-emitting (photo emission); To effectively control the light absorbing and converts it into an electronic signal conditions, the researchers in titanium – silicon contact surface (titanium-silicon junction) generation of carriers (charge carriers), and another gold – silicon junction to the restructuring, and the detector is a high speed through its special geometry of the two metal reached ── – the distance between the junction silicon less than 100 nm.
The researchers believe that the concept of PIPED not just the future of the optical data transmission infrastructure sis, but also key components of wireless data transmission system; KIT subsidiary responsible for research to support ultra-high speed optical signal processing of electro – fusion technology HIRST (Helmholtz International Research School of Teratronics) Institute Professor Christian Koos said: “plasma components can be applied to high-speed wireless data communication, and to achieve 1 terabit per second data transfer rate.”
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