This lecture covers advanced topics in optics, focusing on the optics of metals and plasmonics, plasmonic waveguides and components, plasmonic switches, waveguide and modulator integration, heat-assisted magnetic recording, implementation of ring head gratings, compensating losses with gain, and integration with organic materials. The lecture explores applications such as surface plasmon polariton based modulators and switches, chip-to-chip optical interconnect systems, and organic plasmon-emitting diodes and detectors.