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In this specially designed photonic crystal fiber, the air hole diameters along orthogonal axes adjacent to the core region are different, and hence create an effective index difference between the two orthogonal polarization modes.
The birefringence is defined as the effective index difference between that of x-polarized and y-polarized HE11 modes.
This helps in creating an effective index difference between the two orthogonal polarization modes.
The Y-branch shape was optimized by introducing constant effective refractive index difference between branches (ΔNeff) along the propagation direction through beam propagation method (BPM) scheme.
The fiber is designed by increasing refractive index difference between core and cladding and by the introduction of low index rod in the core.
The apparent decrease in optical transmittance is mainly assigned to the growth of the nanopores and refractive index difference between KTP crystal and SiO2 glass.
Similar(22)
Because of the heterogeneity of the structure, and the large refractive index differences between cell walls, cytoplasm, and medium, fungal biofilms appear optically opaque.
Negative dispersion ranging from −183 to −281 ps/(nm km) in S + C bands is achieved with the refractive index differences between matrical material and cylindrical inclusions no more than 0.03.
Using the refraction index differences between each phase and the image-forming properties of the complex objects formed in addition to the relative size of the bright part of the spheres, it was possible to determine the nature of each type of structure, as well as to discern whether these structures were located inside or outside of the multiphase oil drops.
Descriptive statistics (mean and standard error) were used to compare and compute DMFT and SiC index differences between the subgroups.
To better understand the sensitivity enhancement mechanism in relation to the refractive index differences between the target layer and other layers, the three-layer model shown in inset of Fig. 4 is assumed.
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