0.1-NM NARROW BANDWIDTH TRANSMISSION OF A 2.5-GB S SPECTRUM-SLICED INCOHERENT-LIGHT CHANNEL USING AN ALL-OPTICAL BANDWIDTH EXPANSION TECHNIQUE AT THE RECEIVER/

We introduce a new all-optical technique to transmit a spectrum-sliced incoherent channel with its optical bandwidth smaller than the conven tional limit. As a demonstration, we reduce the optical bandwidth to o nly 0.1 mm for the 2.5-Gb/s incoherent channel transmission, Even thou gh the signal-to-noise ratio (SNR) is poor during the transmission, su fficient SNR can be obtained through the intrachannel four-wave mixing at the receiver. With this slim bandwidth transmission technique, the maximum number of spectrum-sliced wavelength-division-multiplexed cha nnels can be increased greatly and the dispersion penalty can be reduc ed simultaneously.