دوره 11، شماره 1 - ( 10-1395 )                   جلد 11 شماره 1 صفحات 56-49 | برگشت به فهرست نسخه ها


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Yousefi E, Hatami M, Dehghani S. Optimization of Bistability in Nonlinear Chalcogenide Fiber Bragg Grating for All Optical Switch and Memory Applications. IJOP 2017; 11 (1) :49-56
URL: http://ijop.ir/article-1-275-fa.html
Optimization of Bistability in Nonlinear Chalcogenide Fiber Bragg Grating for All Optical Switch and Memory Applications. . 1395; 11 (1) :49-56

URL: http://ijop.ir/article-1-275-fa.html


چکیده:   (5360 مشاهده)

We solve the coupled mode equations governing the chalcogenide nonlinear fiber Bragg gratings (FBGs) numerically, and obtain the bistability characteristics. The characteristics of the chalcogenide nonlinear FBGs such as: switching threshold intensity, bistability interval and on-off switching ratio are studied. The effects of FBG length and its third order nonlinear refractive index on FBG characteristics are investigated. We obtain an interesting result that independent of the third order nonlinear refractive index; there exists an optimum FBG length of about 6 mm at which the on-off switching ratio becomes maximized. It is also found that by increasing the nonlinearity, the maximum value of on-off switching ratio decreases. The results of this paper can be mainly used for designing all-optical switches and memories.

     
نوع مطالعه: پژوهشي | موضوع مقاله: تخصصي
دریافت: 1395/3/31 | ویرایش نهایی: 1395/5/6 | پذیرش: 1395/5/30 | انتشار: 1395/11/9

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