Figure 1
From: Tailoring modal properties of inhibited-coupling guiding fibers by cladding modification
Schematic diagram for the cross sections of the studied fibers; plots for the effective refractive index (neff) and CL as a function of the wavelength for LP01 (black curve), LP11a (red curve), LP11b (blue curve) and LP21 (green curve); mode profiles and color map for the radial component of the Poynting vector (pr – in logarithmic scale, at the wavelength of 1000 nm) for LP01, LP11a, LP11b and LP21. (a) Fiber design #0: tubular fiber with identical gap between the lattice tubes. (b) Fiber design #1: tubular fiber with two bigger gaps at 180°; (c) Fiber design #2: tubular fiber with four bigger gaps at 90°. In the effective refractive index plots, the cladding tubes HE11 (LP01) dispersion (pink curves) is shown for comparison.
