Can Coherent Optics Reduce Data-Center Power?


As optical bandwidth requirements increase, system designers are turning to “coherent” modulation schemes that can place more data on the same laser light, and lower power over long connections. A newer question is whether those savings could be achieved for short connections within data centers, as well. “Coherent is the direction everything's moving, because for a given system and... » read more

VCSEL Technology Takes Off


By Kevin Fogarty and Ed Sperling Vertical cavity surface emitting laser (VCSEL) technology, a proven but mostly niche technology until recently, is suddenly a very hot commodity thanks to the introduction of facial recognition in phones and other mobile devices. VCELS primarily have been used as a low-cost way of tracking movement and transfering data in computer mice, laser printers and ... » read more

Week In Review: Manufacturing, Test


Trade SEMI has voiced support and encouragement for trade discussions between U.S. President Donald Trump and the People's Republic of China President Xi Jinping. The talks are planned for Dec. 1 during the G20 Summit in Argentina. SEMI expressed hope for a deal and offered principles beneficial to the microelectronics supply chain. Recent tariffs and trade tensions, on top of rumored expor... » read more

The Week In Review: Manufacturing


Chipmakers Apple has announced the latest award from its $1 billion Advanced Manufacturing Fund. Finisar, a manufacturer of optical communications components, will receive $390 million in funds from Apple. The award will enable Finisar to increase its R&D spending and high-volume production of vertical-cavity surface-emitting lasers (VCSELs). A VCSEL is a type of semiconductor laser diode. The... » read more