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Shape-preserving and unidirectional frequency conversion using four-wave mixing Bragg scattering

Optics Express Optical Society of America 26 (2018) 17145-17157

JB Christensen, JG Koefoed, B Bell, CJ McKinstries, K Rottwitt

In this work, we investigate the properties of four-wave mixing Bragg scattering driven by orthogonally polarized pumps in a birefringent waveguide. This configuration enables a large signal conversion bandwidth, and allows strongly unidirectional frequency conversion as undesired Bragg-scattering processes are suppressed by waveguide birefringence. Moreover, we show that this form of Bragg scattering preserves the (arbitrary) signal pulse shape, even when driven by pulsed pumps.

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