A discussion on the relation between random photon localization and photonic band gaps has been made in this paper.

Application of lasers in photon localization study;

Studies on the Mid-infrared Photon Localization in Random Media and the Z-scan Technique;

In order to understand and explain the theory of photon localization,the quartz-crystal,integrated multimillion micro-structure optical fiber and dual-core micro-structure optical fiber were measured in the visible region.

The photon localization in disordered two-dimensional photonic crystal is studied by use of multiple-scattering method.

A narrow filter produced by photonic band gap and photon localization of photonic crystal is introduced in this paper.

Optical properties of photonic crystals such as photonic bandgap, photonic localization is discussed.

In 1987 Yablonovitch and John, respectively and independently, proposed the notion of photonic crystals, which is an analogy to the conventional crystals and its principal properties are photonic band-gap and photonic localization.

The material has many other unique properties such as periodic structure, photonic localization, polarization etc.

The paper puts forward that there are two kinds of light localizations at same time in random laser with coherent feedback: the one is that the recurrent light scattering loop restricts photons in the loop,the another is that the scattering particles restrict photons in the entire gain medium,and on the base,it expatiates the work principle of the random laser with coherent feedback.