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Demultiplexing of a 40-Gb/s optical signal to 2.5 Gb/s using a nonlinear fiber loop mirror driven by amplified, gain-switched laser diode pulses

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All-optical switching using the optical Kerr effect in silica fiber is most promising for ultra-fast demultiplexers because of its potentially fast response with low control power. So far, polarimetric1 and nonlinear optical fiber loop mirror (NOLM)2,3 all-optical demultiplexers have been reported. However, the reported demultiplexers have required more than a few watts of peak power for the control pulses and have had switching times >100ps. We have clarified the NOLM design to achieve a high-speed dumultiplexer with low-power control pulses and have demonstrated demultiplexing from 2.5 Gb/s to 40 Gb/s with a 19-ps switching time by using all-laser diodes (LD’s) for the first time.

© 1991 Optical Society of America

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