The timedelay characterictic of slow light is analyzed,and the application of slow light buffer in solving the congestion problem of optical packet switching(OPS) is put forward.

The principle progress and existing problem of slow light buffer based-EIT(electric induced transparency),buffer based-chirped grating and buffer based-fiber loop are described.

A novel optical buffer based on optical fiber loop is detailed.

The paper first studies photonic switching technology deeply, then introduces acousto optic tunable filters and optical buffer in particular which are key components in all optical networks, finally envisions the future of photonic switching technology.

Optical buffer is one of most important element in optical packet switching network.

Research on all-optical buffer based on Arrayed-Waveguide Grating and Fiber Bragg Grating;

This paper presents a novel erasable all-optical buffer which realizes the "write" and "read" function.

An overview about the specification of all-optical buffer is given,and it is pointed out that digital buffer is not only used as a copier of input signals,but also synchronous and can be written and read out.

The light buffer shadow-testing acceleration algorithm in the ray tracing technique is improved.