Approaches　for　achieving　large-area　periodic,　quasi-periodic,　or　even　random　structures　at　the　nanometer-scale　are　important　for　promoting　the　development　of　nanophotonics.　Mechanisms　related　to　light-matter　interactions　have　been　involved　in　most　of　the　nanofabrication　methods.　Photoreduction　is　one　of　the　photochemical　processes　that　have　been　employed　in　plasmonic　nanopatterning,　where　metal　ions　are　reduced　to　plasmonic　nanoparticles.　Here　we　demonstrate　fabrication　of　plasmonic　photonic　crystals　through　photoreduction　of　silver　ions　doped　in　polymer　films　that　are　modulated　by　template　gratings.　Periodical　arrays　of　continuous　silver　nanolines　were　produced　after　the　subsequent　liftoff　and　annealing　processes　performed　on　the　reduced　silver　nanoparticles.　Strong　Fano-coupling　between　the　plasmonic　and　photonic　resonance　modes　not　only　verifies　the　success　of　this　fabrication　technique,　but　also　enables　exploiting　new　sensors　and　optoelectronic　devices.