Key research areas
An ideal transmission medium that could allow the nonmodified transfer of information from a transmitter to a receiver is the ultimate and likely unreachable dream of telecommunications.
In practice, any real transmission medium introduces distortions into the signal that can be either recoverable (e.g., dispersive broadening) or not fully removable (e.g., noise). Optical fiber waveguides are an example of a medium with numerous attractive features such as low loss, large bandwidth, and low cost. Despite the reduced loss, optical fiber transmission takes place over extremely long distances, requiring periodic signal amplification, which introduces noise. An adequate combination of classical optical fiber technology with novel techniques might further improve the properties of the transmission medium. We discuss and demonstrate the possibility of creating transmission media with cross-domain (spatial and spectral) transparency (effective zero local attenuation across the plane) and reduced noise by applying ultralong Raman fiber laser technology.
Prof. Andrew Ellis, Prof. Nick Doran, Prof. Keith Blow, Prof. David Payne
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