EYE DIAGRAMS & BER IN OPTICAL COMMUNICATIONS BER(COM) is an extension module to ED-COM allowing investigation of Eye Diagrams and BER in optical communications systems. It allows the student to generate and evaluate eye diagrams and investigate the effect of noise, attenuation and dispersion on eye diagrams and BER for the many communication system permutations allowed by OPTOSCI's ED-COM educator kit. Back to ED-COM The objectives of the experimental investigation of BER(COM) are: Basics of eye patterns Using eye patterns as a qualitative diagnostic tool Rise time, pulse width and jitter measurements Bit-rate limitations due to noise Bit-rate limitations due to dispersion Q-factors and Bit Error Rate (BER) from noise amplitudes Q-factors and BER from eye pattern histograms Compare LED and laser response over different fibre lengths and bit rates