Wirth Lima Junior, Amir, and Antonio Sergio Bezerra Sombra. “Switching Cell of Directional Coupler Embedded in Photonic Crystal Driven by an External Command (for the C, L, and U Bands of ITU)”. Journal of Communication and Information Systems, vol. 24, no. 1, June 2015, doi:10.14209/jcis.2009.6.