Abstract
We demonstrate electrical tuning of phase mismatch in silicon wavelength converters. Active control of birefringence induced by a thin-film piezoelectric transducer integrated on top of the waveguides is used for dispersion engineering. The technology provides a solution for compensating the phase mismatch caused by fabrication errors in integrated waveguides. It also offers a mean to dynamically control the relative dispersion between interacting waves and hence, to introduce electronic control of optical parametric processes.
Highlights
Silicon photonics has made spectacular progress in the last few years
We recently demonstrated electrical tuning of birefringence in silicon-on-insulator (SOI) waveguides by the stress induced by a thin-film piezoelectric transducer integrated on top of the waveguide [9]
We propose and demonstrate the use of this tunable birefringence effect for active phase matching in silicon waveguides
Summary
Silicon photonics has made spectacular progress in the last few years. strong third-order optical nonlinearity in silicon has led to a wide range of functionalities that were believed to be absent in silicon [1,2]. One approach relies on engineering the group-velocity dispersion (GVD) by proper waveguide geometry design to balance the nonlinear phase mismatch This technique allows optical parametric amplification and efficient wavelength conversion, it demands precise control of waveguide dimensions (
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