Abstract: The two working regimes of strong (SCR) and weak coupling (WCR) for multimode fibers (MMF) for space-division multiplexing are compared in terms of nonlinearity and achievable data rates.

December 24 feels like a holiday to many, with its half-empty offices and the rush of a last-minute shopping crowd. Its status as an official holiday, however, isn't the same as Christmas Day.

President Donald Trump has signed an executive order making some big changes to marijuana policy, the most substantial since 1970. On Dec. 18, Trump ordered the government to stop classifying ...

On Sunday, Dec. 21, at exactly 10:03 a.m. EST, the Northern Hemisphere's astronomical winter officially begins with the winter solstice. That's the moment when the Northern Hemisphere is tilted ...