Title :
Bit-dependent degradation caused by stimulated Brillouin scattering in CPFSK coherent optical repeaterless systems with booster amplifiers
Author :
Ohkawa, Norio ; Hayashi, Yoshihiro
Author_Institution :
NTT Opto-Electron. Labs., Kanagawa, Japan
fDate :
5/1/1995 12:00:00 AM
Abstract :
An interesting phenomenon due to stimulated Brillouin scattering (SBS) is experimentally found in a CPFSK heterodyne system with a booster amplifier. We find that the demodulated waveform amplitudes of just a few distinguished bits are strongly suppressed leading to a significant increase in BER. It is confirmed that the BER degradation can be reduced by adjusting the threshold voltage bias of the receiver decision circuit
Keywords :
Brillouin spectra; demodulation; frequency shift keying; optical fibre communication; optical modulation; optical receivers; optical transmitters; stimulated Brillouin scattering; BER degradation; CPFSK coherent optical repeaterless systems; CPFSK heterodyne system; SBS; bit-dependent degradation; booster amplifiers; demodulated waveform amplitudes; receiver decision circuit; stimulated Brillouin scattering; threshold voltage bias; Bit error rate; Brillouin scattering; Degradation; Fiber nonlinear optics; Nonlinear optics; Optical distortion; Optical receivers; Optical scattering; Optical transmitters; Stimulated emission;
Journal_Title :
Lightwave Technology, Journal of
