Abstract
Preliminary observations and measurements of increased relaxation speeds for optical switching in resonantly enhanced nonlinear systems are demonstrated. The effect is observed using a neodymium-doped twin-core fibre interferometer, and uses stimulated down-pumping of the /sup 4/F/sub 3/2/ metastable state in neodymium. The relaxation time has been reduced from approximately 390 mu s to less than 120 mu s, and it is shown that the reduction is dependent on the power of the down-pumping source. >
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