Abstract: Bismuth doped fiber amplifiers (BDFA) have been pumped with single mode 1190–1260 nm lasers to amplify signals over the O-band. We report here a BDFA using 915 nm multimode laser via an ...
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President Donald Trump denied he was using the Department of Justice to punish his enemies on Sunday’s 60 Minutes. CBS News’s Norah O’Donnell confronted the president with the names of political ...
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