Researchers of the Chalmers University of Technology have exhibited an optical amplifier that can intensify light with very low noise. This increases the optical fiber signals and enhances the potential of data communications.
Peter Andrekson, Chalmers University of Technology. Credit - Jan-Olof Yxell
The amplifier can also lead to enhanced laser radar technology and Internet traffic. It can also promote a variety of applications where identification of weak light levels is crucial.
The researchers have utilized a phase-sensitive optical fiber parametric amplifier to decrease the noise to 1dB. This reduction in noise enables the amplifier to be used in applications such as optical communication systems. The research has been funded by the Swedish Research Council and the European project PHASORS. EXFO Sweden AB, OneFive Photonics, OFS, Eblana, University of Athens, University College Cork, and the University of Southampton also took part in the project.
The research team made use of the fact that glass’ refractive index depends on the intensity of light present in the fiber. Professor Peter Andrekson, a member of the research group stated that the optical amplifier enables connecting continents, countries, and cities in an efficient manner. He added that the optical amplifier is compatible with various modulation formats and with lasers of different wavelengths.