Silicon computer chips depend on metal wiring that is fast becoming a source of delay and wasted power. Many engineers would rather use light to transmit data over the longer distances on chips, much in the same way that the light in fiber optic cables efficiently carries virtually all long-haul telecommunications traffic. One of the key problems in realizing the goal, creating an intense light source that is compatible with silicon, now seems much closer to being solved based on advances reported by engineers including a team at Stanford University.
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