We numerically demonstrate the feasibility of constructing an all-optical pulse restorer by using a microresonator structure with Kerr nonlinearity. We obtain a clear nonlinear power transfer curve capable of improving the signal-to-noise ratio and reducing the bit error rate for digital signals. Since we take advantage of field enhancement at resonance, this integrated reshaper could be much smaller than other gates based on nonlinear fibers or waveguides.
© 2006 Optical Society of America
(070.4340) Fourier optics and signal processing : Nonlinear optical signal processing
(190.4390) Nonlinear optics : Nonlinear optics, integrated optics
(230.5750) Optical devices : Resonators
Original Manuscript: March 1, 2006
Manuscript Accepted: April 28, 2006
Yannick Dumeige, Laura Ghisa, and Patrice Féron, "Integrated all-optical pulse restoration with coupled nonlinear microring resonators," Opt. Lett. 31, 2187-2189 (2006)