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Fig. 2 | Journal of the European Optical Society-Rapid Publications

Fig. 2

From: Lossy mode resonances in photonic crystal fibers

Fig. 2

Spectral dependencies of mode propagation constants for an untapered PCF with a polymer coating of thickness d = 20 μm, surrounded by water; a -loss of the PCF mode, b -phase diagram. Curve 1 - quartz glass refractive index, 2 and 2′ – Reβ and Imβ of the PCF core mode, 3 and 3′, 5 and 5′- Reβ and Imβ of TE modes of different orders for the coating, 4 and 4′, 6 and 6′ - Reβ and Imβ of TM modes of the same orders for the coating. Dashed lines indicate wavelengths of phase synchronism of the PCF core and coating modes. They correspond to intersection points of curves 3, 4, 5 and 6 with curve 2

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