Hollow-core-waveguides using adiabatically chirped high-contrast-gratings for a >10× loss reduction

Chirped high-contrast-grating hollow-core waveguide demonstrates a >;10× loss reduction. Simulation shows that a propagation loss as low as 0.04 dB/cm can be achieved with a nonlinear coefficient on the order of 10
^-5
/W/m.