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"The invention of lasers in the 1960s revolutionized free-space optics.[citation needed] Military organizations were particularly interested and boosted their development. In 1973, while prototyping the first laser printers at PARC, Gary Starkweather and others made a duplex 30 Mbit/s CAN optical link using astronomical telescopes and HeNe lasers to send data between offices; they chose the method due partly to less strict regulations (at the time) on free-space optical communication by the FCC.[5] However, laser-based free-space optics lost market momentum when the installation of optical fiber networks for civilian uses was at its peak.[citation needed]
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