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Integration of semiconductor nanowire lasers with polymeric waveguide devices on a mechanically flexible substrate

Jevtics, Dimitars and Hurtado, Antonio and Guilhabert, Benoit and McPhillimy, John and Cantarella, Giuseppe and Gao, Qian and Tan, Hark Hoe and Jagadish, Chennupati and Strain, Michael John and Dawson, Martin (2017) Integration of semiconductor nanowire lasers with polymeric waveguide devices on a mechanically flexible substrate. Nano Letters. pp. 1-20. ISSN 1530-6992

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    Nanowire lasers are integrated with planar waveguide devices using a high positional accuracy micro-transfer printing technique. Direct nanowire to waveguide coupling is demonstrated, with coupling losses as low as -17 dB, dominated by mode mismatch between the structures. Coupling is achieved using both end-fire coupling into a waveguide facet, and from nanowire lasers printed directly onto the top surface of the waveguide. In-waveguide peak powers up to 11.8 μW are demonstrated. Basic photonic integrated circuit functions such as power splitting and wavelength multiplexing are presented. Finally, devices are fabricated on a mechanically flexible substrate to demonstrate robust coupling between the on-chip laser source and waveguides under significant deformation of the system.