Dynamics of Nanoparticles Trapped on an Integrated Slot Waveguide with a High Index Contrast

Tian, Hao; Kimerling, Lionel C.; Michel, Jürgen; Li, Guifang; Zhang, Lin

doi:10.1364/ota.2017.ots1d.4

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Investigation Of a Slot Waveguide1

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2019

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“…Nonlinear χ (2) interaction occurs within the slot region with blue dotted-line border and within the upper-cladding region with red dashed-line border. of the electric field at the slot-core interface [39], [40]. When the slot is filled by a nonlinear polymer material, this field enhancement can be used for nonlinear-optical applications: silicon-organic hybrid double-slot waveguides [8] and hetero-slot waveguides consisting of SiN and aluminum nitride [41] were proposed for χ (2) nonlinear processes in mid-infrared range.…”

Section: Investigation Of a Slot Waveguidementioning

confidence: 99%

Investigation of Hybrid Silicon-Nitride/Polymer Waveguides for Second-Harmonic Generation

et al. 2019

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We propose a hybrid silicon-nitride (Si 3 N 4 or SiN for short)/nonlinear polymer waveguide to achieve second-harmonic generation of an input 1550 nm signal by modal phase-matching between zero-order spatial mode at 1550 nm and second-order mode at 775 nm. We explore and optimize two cases, single channel waveguide and slot waveguide, by varying the waveguide dimensions. For TE polarized light, the optimum slot waveguide exhibits an effective interaction area A eff of about 16 μm 2 , which is an order-of-magnitude improvement over the single channel waveguide and can translate to a high value of effective nonlinearity. We also show that the optimum slot waveguide geometry is robust with respect to fabrication uncertainties and bending effects.

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