Near‐Zero Index Photonic Crystals with Directive Bound States in the Continuum
Near‐Zero Index Photonic Crystals with Directive Bound States in the Continuum
Abstract Near‐zero‐index platforms arise as a new opportunity for light manipulation with boosting of optical nonlinearities, transmission properties in waveguides, and constant phase distribution. In addition, they represent a solution to impedance mismatch faced in photonic circuitry offering several applications in quantum photonics, communication, and sensing. However, their realization is …