Yale University scientists use sound waves to enhance light signals
With the latest waveguide, Yale University scientists have developed a method to significantly increase the laser power of silicon chips. This method uses sound waves to enhance laser pointer light. Researchers believe that this device will have more commercial value. Including efficient optical fiber communication and better data signal processing. According to the researchers, amplifying optical signals directly on silicon wafers has been the goal of researchers worldwide for many years. They hope to establish this hybrid technology. However, the optical amplification efficiency is lower than the actual application level. Makes the plan process slow. Scientists at Yale University claim to have solved the problem. The equipment they developed can reduce the overflow of light and sound waves during the amplification process.
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Silicon is the basis of almost all microchip technology. Assistant Professor of Applied Physics at Yale University. The ability to combine light and sound allows us to control and process information in a whole new way. The advantage of the new device is the Brillouin amplifier. The laser beam is pumped at one end of the waveguide. And add the light signal in the opposite direction. In this way, sound waves with acoustic phonon characteristics can be generated. Subsequently, the sound wave causes the pump laser beam to physically scatter. As a result, the incoming light signal excites more photons to form an avalanche photon gain. This continuous high-throughput photon is maintained by the acoustic signal and drives the frequency information to the end of the waveguide, and finally forms a significant optical signal amplification. Yale University researchers have developed a chip laser amplification device that uses sound waves to increase the optical signal and calculates how to form this interaction without losing the increase. The real challenge is," said a graduate student in the Rakich research team at Yale University: By precisely controlling the photo-acoustic interaction, we can develop practical new devices. For example, new types of lasers. With funding from DARPA, the Rakich laboratory is committed to the development of new photonic integrated circuits and components. Researchers in this laboratory are convinced that they The developed equipment will have a wider range of practical value. We are happy to promote the development of this new technology and hope to see its future application progress.
2021-01-06 05:49:50
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