Which industry employs twice as many people in the UK as pharmaceuticals and more than either the space or "fintech" sectors? The answer is photonics, according to the Photonics Leadership Group (PLG) - a trade association representing more than 120 members in the field. For the last few years, it has been tracking and collating all the myriad applications of optical technologies or photonics. That's no easy task given that most emerge from hundreds of smalland medium-sized enterprises.
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