Method of Measuring the Waveguide Dispersion Factor and the Thermo-Optic Coefficient of Effective Refractive Index of Long-Period Fiber Gratings是什麼意思_Method of Measuring the Waveguide Dispersion Factor and the Thermo-Optic Coefficient of Effective Refractive Index of Long-Period Fiber Gratings在線翻譯_英語_讀音_用法_例句