Numerical and experimental analysis of long period gratings in wavelength scale elliptical microfibers

Jin Wa^{1, 2, †}, Bi Wei-Hong^{1, 2}, Fu Guang-Wei^{1, 2}

(color online) Phase matching curves for MNFs with different sizes. (a) and (b) Coupling between oHE₁₁, eHE₁₁ and eHE₀₁ for ; (c) and (d) Coupling between oHE₁₁, eHE₁₁, and eHE₀₁ for .