20 November 2012 Engineered slot-comb photonic crystal waveguides
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Abstract
We report experimental measurements of slow light in Comb Photonic Crystal Waveguides (CPCW). The tailoring of the slot into a comb allows performing dispersion engineering in order to achieve slow light regime, and efficient tapers allow a high coupling efficiency. We also investigate the losses with cut-back measurements and show that losses are comparable with those of a standard W1 Photonic Crystal Waveguide, whereas the nonlinear effective area is strongly reduced. This type of waveguide offers opportunities to realize compact devices with an ultra-high light confinement for achieving optical nonlinearities with a low index material.
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Charles Caer, Xavier Le Roux, Eric Cassan, "Engineered slot-comb photonic crystal waveguides", Proc. SPIE 8564, Nanophotonics and Micro/Nano Optics, 85640M (20 November 2012); doi: 10.1117/12.2001080; https://doi.org/10.1117/12.2001080
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