A NOVEL APPROACH FOR GENERATION OF ALL-OPTICAL OFDM USING DISCRETE COSINE TRANSFORM BASED ON OPTICAL COUPLERS IN A RADIO-OVER-FIBER LINK

A novel method for100Gbpsall-optical OFDM using Discrete Cosine Transform in a Radio-Over-Fiber link is proposed. The system is designed simply using both symmetric and asymmetric passive optical couplers. DCT is achieved all-optically by adjusting the length and splitting ratio of the couplers. The performance of the system is compared with all-optical OFDM based on Discrete Fourier, Discrete Cosine and Discrete Wavelet Transform. A BER of 10-22 is achieved using all-optical cosine transform. The system is designed and studied using Optisystem and Matlab.