Current "muxes" typically can push up to 100 light waves down a single fiber, but by year-end Nortel will begin shipping test gear that pushes 160 lightwaves, each carrying 10 billion bits of data per second.

FORBES: Hooked on Photonics

Current "muxes" typically can push up to 100 light waves down a single fiber, but by year-end Nortel will begin shipping test gear that pushes 160 lightwaves, each carrying 10 billion bits of data a second.

FORBES: Hooked on photonics

On April 5th in Prague, Mr Obama reiterated a campaign promise to hold talks with Russia to reduce both American and Russian nuclear stockpiles, to push for a global nuclear test ban and to set up an international nuclear fuel bank to help with peaceful nuclear-energy programmes.

ECONOMIST: Barack Obama's foreign policy