Title :
Bit error rate degradation due to a dip in the frequency response of an equalizing amplifier
Author :
Yoneyama, Mikio ; Akazawa, Yukio
Author_Institution :
Opt. Network Syst. Labs., NTT Electron. Corp., Kanagawa, Japan
fDate :
10/1/1999 12:00:00 AM
Abstract :
This paper describes an analysis of bit error rate (BER) degradation due to a dip in the frequency response of an equalizing amplifier. An equivalent circuit simulation clarifies the BER degradation factors: (1) the output amplitude decrease of a specific binary sequence that has a repetition frequency equal to the dip frequency and (2) the oscillation in output voltage after rise and fall of signal level. A simple model shows that the center frequency and bandwidth of the dip as well as the depth of the dip strongly affect BER. A circuit simulation and experiment show that a dip at around one tenth the data rate causes the worst BER. The dip tolerance of a dc-suppressed transmission code is also discussed
Keywords :
equivalent circuits; frequency response; integrated circuit modelling; optical fibre amplifiers; optical fibre communication; time division multiplexing; BER degradation factors; TDM optical fibre communication; binary sequence; bit error rate degradation; center frequency; data rate; dc-suppressed transmission code; dip frequency; dip tolerance; equalizing amplifier; equivalent circuit simulation; frequency response; frequency response dip; output amplitude decrease; output voltage oscillation; repetition frequency; Bandwidth; Bit error rate; Circuit simulation; Degradation; Electronics packaging; Equivalent circuits; Frequency response; Optical amplifiers; Optical receivers; Resonance;
Journal_Title :
Lightwave Technology, Journal of
