کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
851183 | 909305 | 2008 | 6 صفحه PDF | دانلود رایگان |
Non-zero dispersion shifted fibers (NZ-DSFs) find extensive use in wavelength division multiplexed (WDM) system as it reduces the non-linear effects like four-wave mixing (FWM) generation. A depressed clad graded index fiber with a central dip in the refractive index profile, as well as without dip, has been modeled to perform as an NZ-DSF using the spot size optimization technique. The performance characteristics of the proposed NZ-DSF have been studied by changing different fiber parameters; such as inner core radius (a), relative refractive index differences (Δ+), normalized end position of depressed clad (C), depression parameter (ρ ), etc. for a given value of Petermann-2 spot size (W¯). By suitably adjusting the fiber parameters, the effective core areas (Aeff) as simulated here are very large (∼80 μm2) so that the effect of non-linearities upon them can be minimized. These NZ-DSFs have also been optimized for WDM transmission system. The dispersion slopes of the proposed fibers with and without dip have been estimated which are comparable with the reported results.
Journal: Optik - International Journal for Light and Electron Optics - Volume 119, Issue 2, 1 February 2008, Pages 63–68