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MAY 2021 I SMT007 MAGAZINE 37 committee or task group. IPC staff liaisons are therefore entrusted to follow ANSI rules in providing a path for resolution of negative ballots, and in providing balloters with their rights should a compromise not be achieved, and the subcommittee or task group decides to move forward with the release of a document with a maintained negative vote. IPC Wants You! If you've determined that this article dou- bles as both a description of IPC staff liaison responsibilities and a thinly veiled attempt at soliciting your participation in an IPC stan- dards development subcommittee or task group, then you've been paying attention! IPC staff liaisons simultaneously serve as recruit- ment officers, drill instructors, arbiters, and editors in the Standards Development Pro- cess; we are involved from inception to pub- lication. As previously mentioned, the success of an IPC standard or revision depends on the volunteer contributions of the subcommittee Researchers at the University of California, Berke- ley, have found a new way to harness properties of light waves that can radically increase the amount of data they carry. They demonstrated the emission of discrete twisting laser beams from antennas made up of concentric rings roughly equal to the diame- ter of a human hair, small enough to be placed on computer chips. The new work throws wide open the amount of information that can be multiplexed, or simultaneously trans- mitted, by a coherent light source. A common example of multiplexing is the transmission of multiple telephone calls over a single wire, but there had been funda- mental limits to the number of coherent twisted light waves that could be directly multiplexed. "It's the first time that lasers producing twisted light have been directly multiplexed," said study prin- Light Unbound: Data Limits Could Vanish With New Optical Antennas or task group membership whose subject mat- ter expertise is so critical to its viability in our industry. You can have a voice in shaping IPC stan- dards, and your voice matters. We consider all volunteer input to be valuable, and if you are one of those folks who is hesitant to plunge head-first into the fray, we as IPC staff liaisons can help you get your foot in the door and to a place where you will ultimately feel com- fortable participating in and contributing to an IPC standards development effort. at is one of the many reasons we are here. Want to dip your toe in the water? You can contact us through "IPC Standards Committee—Getting Started" or by emailing our staff at Answers@ SMT007 John Perry is IPC director of Printed Board Standards and Technology. cipal investigator Boubacar Kanté, the Chenming Hu Associate Professor in UC Berkeley's Depart- ment of Electrical Engineering and Computer Sci- ences. "We've been experiencing an explosion of data in our world, and the communication channels we have now will soon be insufficient for what we need. The technology we are report- ing overcomes current data capacity limits through a characteristic of light called the orbital angular momentum. It is a game-changer with applications in biological imaging, quantum cryp- tography, high-capacity communica- tions and sensors." Filmmakers take advantage of this when creat- ing 3D movies, allowing viewers with specialized glasses to receive two sets of signals—one for each eye—to create a stereoscopic effect and the illusion of depth. (Source: UC-Berkely)

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