Photonic skin-depth engineering
Photonic skin-depth engineering
Recently, we proposed a paradigm shift in light confinement strategy showing how relaxed total internal reflection and photonic skin-depth engineering can lead to sub-diffraction waveguides without metal [Optica1, 96 (2014)10.1364/OPTICA.1.000096OPTIC82334-2536]. Here, we show that such extreme-skin-depth (e-skid) waveguides can counterintuitively confine light better than the best-case all-dielectric design of high …