Experimental Assessment of a Direct Detection Optical OFDM System Targeting 10Gb/s and beyond
24 February 2008
We investigated a DD-O-OFDM system by variation of FFT-size, subcarrier usage and D/A-resolution. 63% usage of subcarriers was found as a limit for intermodulation penalties. By clipping 4 bit D/A-resolution at the transmitter is applicable.