In a communication system, the receiver side BER may be affected by transmission channel,,, problems,, wireless , etc. The BER may be improved by choosing a strong signal strength (unless this causes cross-talk and more bit errors), by choosing a slow and robust scheme or scheme, and by applying schemes such as redundant codes.
Hollow core fibers (HCF) are innovative optical fibers having the potential to break the limits of conventional optical fibers. Examples of innovation are ultra-low loss potential, ultra-low nonlinearity, resistan.