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Updated: May 18, 2026

Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures
Published on: November 21, 2019
Sidelobes in the response of arrayed waveguide gratings caused by polarization rotation
Emil Kleijn1, Peter J Williams, Neil D Whitbread
1COBRA Research Institute, Technische Universiteit Eindhoven 5600 MB Eindhoven, The Netherlands. e.kleijn@tue.nl
Abstract:
Earlier it was observed that polarization rotation in an AWG built from birefringent waveguides can result in sidelobes in its response. This effect was measured in a polarization sensitive AWG with an orthogonal layout. Now we investigate through detailed simulation whether this effect also exists in polarization desensitised AWGs. It is shown that a dispersion compensated AWG does not suffer from a polarization sidelobe. Alternatively, the AWG can be designed to minimize polarization rotation to suppress the sidelobe.
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