Direct laser writing of three-dimensional photonic-crystal templates for telecommunications

@article{Deubel2004DirectLW,
  title={Direct laser writing of three-dimensional photonic-crystal templates for telecommunications},
  author={Markus Deubel and Georg von Freymann and Martin Wegener and Suresh Pereira and Kurt Busch and Costas M. Soukoulis},
  journal={Nature Materials},
  year={2004},
  volume={3},
  pages={444-447}
}
The past decade has witnessed intensive research efforts related to the design and fabrication of photonic crystals1,2. These periodically structured dielectric materials can represent the optical analogue of semiconductor crystals, and provide a novel platform for the realization of integrated photonics. Despite intensive efforts, inexpensive fabrication techniques for large-scale three-dimensional photonic crystals of high enough quality, with photonic bandgaps at near-infrared frequencies… 
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