Abstract

We have demonstrated a new type of all-optical 2 × 2 switch by using two independent Yb3+-doped nonlinear optical fibers with a long-period fiber grating pair and a 3-dB fiber coupler. A 400-Hz square-wave pulse train at ∼1549.4 nm was fully switched between the two output ports up to 200 Hz by modulated pump signals at 976 nm with a maximum pump power of ∼35 mW, where the extinction ratio at ∼1549.4 nm between the on and the off states was ∼17.5 dB.

© 2005 Optical Society of America

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