Local tuning of photonic crystal cavities using chalcogenide glasses

Details Local tuning of photonic crystal cavities using chalcogenide glasses Local tuning of photonic crystal cavities using chalcogenide glasses

2007-11-05

arxiv.org/abs/0711.0772v2

Physics

Optics

3 pages, 2 figures

Scientific paper

10.1063/1.2839308

We demonstrate a method to locally change the refractive index in planar optical devices by photodarkening of a thin chalcogenide glass layer deposited on top of the device. The method is used to tune the resonance of GaAs-based photonic crystal cavities by up to 3 nm at 940 nm, with only 5% deterioration in cavity quality factor. The method has broad applications for postproduction tuning of photonic devices.

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