Tunable RF-power-fading compensation of multiple-channel double-sideband SCM transmission using a nonlinearly chirped FBG

We demonstrate that a nonlinearly chirped fiber Bragg grating can compensat e RF power degradation in subcarrier-multiplexed (SCM) systems that is caus ed by fiber dispersion. Our all-optical technique provides tunable dispersi on that compensates for multiple SCM channels simultaneously. We achieve RF -power-fading compensation for two SCM/BPSK 156-Mb/s channels in which the fading is reduced from 15 and 6 dB, respectively, to <0.5 dB for each chann el.