DESIGNING A DIGITAL SIGNAL PROCESSOR BASED ON OPTICAL SIGNAL PROCESSOR WITH FEEDBACK: AMPLITUDE AND PHASE CONTROL

The development of real-time coherent optical signal processors has increased the appeal of optical computing techniques in signal processing applications. The application of suitable optical feedback techniques in real-time coherent optical signal processors employs to obtain simultaneous and independent amplitude and phase control of the signal passing through the system.  In this paper, a digital signal processor with feedback has been designed and compared with an optical signal processor; both are employing simultaneous and independent amplitude and phase control. It is inferred that the quality of the output of digital signal processor with feedback is better than the digital signal processor without feedback and also closer to optical signal processor with feedback.