More, the dispersion characteristic is better, the cut-offwavelength is longer when loaded inhomogeneous dielectric in ridge area, etc.
而在脊区填充非均匀介质以后，截止波长更长，频散特性更好等。
2
ESI parameters are obtained by measuring spot size at certain wavelength and cut-offwavelength; and by measuring spot sized at two different wavelengths.
ESI参数是通过测量某一波长下的模斑和截止波长或二个波长下的模斑得到的。
3
The measurements of the cut-offwavelength and the near field intensity distribution show that the PCF does have comparatively wide single-mode operating range.