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We proposed and demonstrated a method to adjust coupling characteristics of air hole collapsed photonic crystal fiber coupler by air hole control with CO2 laser irradiation technique after elongation process in coupler fabrication.
Recent progress in research on photonic crystal fiber devices fabricated by air hole control using CO2 laser irradiation technique is reviewed. A method to adjust coupling characteristics of air hole collapsed photonic crystal fiber (PCF) coupler, a wide wavelength band PCF attenuator fabrication, and a method to reduce splice loss between a conventional single-mode fiber and a high nonlinear PCF...
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