Modeling comparison of second-harmonic generation in high-index-contrast devices
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- Maes, B., Bienstman, P., Baets, R. et al. Opt Quant Electron (2008) 40: 13. doi:10.1007/s11082-008-9217-6
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In this paper we model second-harmonic generation in a microphotonic structure using two different numerical methods. The proposed two-dimensional waveguide device is challenging as it incorporates a high-contrast grating, which instigates strong local enhancement but also radiation losses. The first simulation method extends the time-domain beam propagation method, whereas the second one builds upon frequency-domain eigenmode expansion. Good agreement between both tools is obtained for both the linear and nonlinear simulations.