Shailendra K. Varshney, Ravindra Kumar Sinha


We report an online method for characterization of Photonic Crystal Fibers (PCFs) from its far field measurements. PCF is analyzed using effective index method to obtain its far field radiation patterns. It is shown that the normalized frequency (Veff), Core diameter (dco), air hole spacing (L), air hole diameter (d) and effective cladding index and hence numerical aperture of PCF can be obtained from its far field measurements.

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