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The lowest loss has been achieved in two types of photonic crystal fibre (PCF) due to an improvement of fabrication process. Optical loss at 1.55 μm wavelength was 1 dB/km and the Rayleigh scattering coefficient was 2 dB/km μm4 in the type 2 PCF. These results suggest a possibility of low-loss PCF comparable to that of conventional single-mode fibers.
Date of Conference: 17-22 Mar 2002