We demonstrate a modulation-instability-based fiber interferometer switch, an ultrafast all-optical fiber switch operating near 1.5-µm wavelength with more than 40dB of small-signal gain. Switching is accomplished.by seeding the modulation instability in one arm of a Mach—Zehnder interferometer, thus destroying its balance. Computer simulations, which include the effects of Raman self-frequency shifts, suggest that as much as 74% of the power input to the interferometer can be transferred to its (initially nulled) output arm when cw pumps are used. Even with an 80% loss at the output analyzer, we have gated 184 mW of power from a color-center laser using only 4.4 µW from a semiconductor laser.
© 1988 Optical Society of America
M. N. Islam, S. P. Dijaili, and J. P. Gordon, "Modulation-instability-based fiber interferometer switch near 1.5 µm," Opt. Lett. 13, 518-520 (1988)