We numerically investigate the performance of wavelength shifters in quasi-phase-matched channel waveguides in lithium niobate. The shifters are based on cascaded quadratic processes, namely, sum- and difference-frequency generation, and permit efficient conversion and signal gain near 1.55 µm over the full bandwidth of erbium-doped fiber amplifiers.
© 1999 Optical Society of America
(130.3120) Integrated optics : Integrated optics devices
(130.3730) Integrated optics : Lithium niobate
(190.2640) Nonlinear optics : Stimulated scattering, modulation, etc.
(190.4390) Nonlinear optics : Nonlinear optics, integrated optics
Katia Gallo and Gaetano Assanto, "Analysis of lithium niobate all-optical wavelength shifters for the third spectral window," J. Opt. Soc. Am. B 16, 741-753 (1999)