Performance Enhancement of Radio Over Fiber Communication Systems With Wavelength Division Multiplexing and Modulation Techniques

This figure shows that in bidirectional pumping the quality factor firstly starts to increase until reaching nearly 6 m then decreases and this occur with increasing EDFA length

6: DPPM coding level and Signal-to-crosstalk ratio against Required signal power and Power penalty using MCB (FA single crosstalk) (a) Required signal power (b) Power penalty. (c)