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The second mode extinction wavelength of air-silica microstructure optical fibers is measured by means of a method based on the azimuthal analysis of the far-field at the fiber exit. The fiber curvature influence is characterized.
PCFs can have a higher tensile strength than conventional silica fibers because the holes prevent flaws from growing. A proper designed PCF shows a tensile strength of 7 kgf which is unobtainable with commercial SMF.
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