Abstract :
Theoretical performance analysis is presented for an optical transmission system with RF subcarriers multiplexing (SCM) for radio on fiber technology considering the effect of PM-IM conversion due to Mach-zehnder modulator (MZM) and optical beat interference (OBI) generated during photodetection process. The computed bit error rate (BER) performance results show that there is significant deterioration in system BER due to OBI and PM-IM conversion and the system suffers significant power penalty at a given BER. The penalty is found to be approximately 5.8 dB, 11.0 dB, 13.5 dB, 15.0 dB, 17.0 dB for PM-IM conversion factor of -1, -2, -3, -4, -5 and 18.0 dB, 18.5 dB, 20.5 dB, 21.5 dB, 22.0 dB for number of subcarriers of 2, 4, 8, 16, 32 respectively.
Keywords :
light interference; optical links; performance evaluation; subcarrier multiplexing; Mach-Zehnder modulator; PM-IM conversion; RF subcarriers multiplexing; intensity noise; optical beat interference; optical bit interference; optical transmission system; performance limitations; photodetection process; radio on fiber technology; subcarrier multiplexed optical fiber link; theoretical performance analysis; Fiber nonlinear optics; Interference; Nonlinear optics; Optical fibers; Optical filters; Optical interferometry; Optical modulation; Optical noise; Optical receivers; Radio frequency; Optical beat Interference (OBI); Optical link; PM-IM conversion; Subcarrier multiplexing;
