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    • Single Mode Air-Clad Single Crystal Sapphire Optical Fiber 

      Hill, Cary; Homa, Dan; Yu, Zhihao; Cheng, Yujie; Liu, Bo; Wang, Anbo; Pickrell, Gary (MDPI; MDPI, 2017-05-03)
      The observation of single mode propagation in an air-clad single crystal sapphire optical fiber at wavelengths at and above 783 nm is presented for the first time. A high-temperature wet acid etching method was used to ...