Abstract:
All-Optical Signal regeneration schemes proposed for better performance are
generally based on exploiting non-linearities of the fiber material. We pro pose a novel All-Optical Signal Regenerator that performs regeneration of
optical signals in the optical domain. Our proposed all-optical regenerator is
a designed physical component that works on the principle of operation of a
dual-drive Mach-Zhender Modulator (DD-MZM) and is installed at the re ceiver side of an optical-fiber based communications link. The optical signal
at the input of the regenerator is split into two paths. One of these paths is
passed through a photodetector for Opto-electronic-conversion (OE) conver sion and is fed into the arms of the DD-MZM for biasing. The other path
carries the optical signal and is connected to the input of the DD-MZM. We
exploit the decreasing slope of the transfer function of DD-MZM to reduce
intensity variations among pulses of an optical signal. This is achieved by
combining the bias voltage of the DD-MZM with the pulsed optical data
signal. This technique helps us in reducing the complexity and calculations
of the all-optical signal regenerator. For simulations, the proposed all-optical
regenerator is connected at the receiver side and results are obtained which
shows a significant improvement in bit error rate (BER) performance.
