SAN FRANCISCO, Oct. 26 - A team of Stanford electrical engineers has discovered how to modulate, or switch on and off, a beam of laser light up to a 100 billion times a second with materials that are widely used in the semiconductor industry.

The group used a standard chip-making process to design a key component of optical networking gear potentially more than 10 times faster than the highest-performance commercial products available today.

The team reported its discovery in the current issue of Nature, which was published on Wednesday. Such an advance could have broad applications both in accelerating the already declining cost of optical networking and in potentially transforming computers in the future by making it possible to interconnect computer chips at extremely high data rates.

Currently, the communications industry uses costly equipment to transmit data over optical fibers at up to 10 billion bits per second. However, researchers are already experimenting with optically linked computers in which components may be located on different sides of the globe. Cheap optical switches will also make it possible to create data superhighways inside computers, making it possible to reorganize them for better performance.