ABSTRACT
Comparative studies have been carried out for RAMAN amplifier-embedded optical fibre communication system designed at 1310 nm and 1550 nm. 200-km long system is considered for analysis, and BER, Q-factor, power before and after signal amplification is obtained at different bit rate and fibre length. Simulation studies revealed that bit detection threshold is higher for 1310 nm, which articulates for lower sensitivity, when both the architectures are fed with simultaneous co- and counter-propagating pumping lasers. However, both gain and Q-factor are higher when the system is designed at 1310 nm, which speaks in favour the system for delivering output at a larger distance or achieving better gain at lower input level, when calculated at predefined length and bit rate. But for both the designs, peak value of Q is achieved at 0.8 sec of bit period. For equal input power, better output power level is observed at 1310 nm owing to flatter gain profile. For a particular operating wavelength, output signal level can be hold for larger distance if bit rate is enhanced. Results speak for pros and cons of both the operating wavelength, which is required for specific communication applications.
