This archive contains the distribution Photonic, version 0.004 to run electromagnetic calculations for photonics and metamaterials. Read the file INSTALL for installation instructions. Read Photonic.pod for usage instructions. This software is copyright (c) 2016 by W. Luis Mochan. This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself. This work was partially supported by DGAPA-UNAM under grants IN108413 and IN113016.