Photonics, a volume in the Interface Transmission Tutorial Book series, describes the science of photonic transmission properties of the interfaces of composite materials systems and devices. The book's authors review the general analysis methods of interface transmission, give many examples, and apply these methods to photonic applications. Applications discussed include photonic crystals, materials, devices and circuits. - Offers a unique approach on photonics from the interfacial transmission point-of-view - Reviews the interface transmission properties of composite materials for photonics applications - Authored by world-leading experts on interface transmission