تحليل أداء شبكة براغ الليفية FBG في نظام ضوئي يستخدم مضخم الليف المشاب بالإيربيوم EDFA
Abstract
إن قراءة تاريخية مختصرة تظهر أن كمية المعلومات المتبادلة في شبكات الاتصالات تواصل ازديادها بصورة مدهشة نتيجة تطوير خدمات اتصال جديدة، ولكن مع زيادة معدل نقل البيانات يعاني النظام الضوئي من تدهور الأداء بسبب التشتت، الذي تم أخذه بالحسبان في هذا البحث. حيث إن تخفيض الضياعات الناتجة عن التشتت مسألة هامة في الشبكات الضوئية، وتعتبر شبكة براغ الليفيةFiber Bragg Grating(FBG) من أهم مكونات نظم الاتصالات الضوئية، وإحدى الطرق الفعالة المستخدمة لتحقيق هذه الغاية. تمت في هذه المقالة دراسة تأثير استخدام FBG كمعوض للتشتت في نظم الاتصالات الضوئية، حيث قمنا بمحاكاة نظام اتصالات ضوئي يستخدم FBG،ودرسنا تأثير بارامترات كل من مضخم الليف المشاب بالإيربيومErbium Doped Fiber Amplifier(EDFA) وشبكة براغ والليف الضوئي المستخدم على أداء هذا النظام، وتم إيجاد أفضل القيم لبارامترات هذا النظام. اعتمد نموذج المحاكاة المدروس على برنامجي Optisystem7 و Matlab. وتم تقييم النتائج بالاعتماد على المخطط العيني الناتج عن المحاكاة والمعاملينQ و معدل خطأ البت (BER)Bit Error Rate. Studying is showed that the amount of exchanging information in the network surprisingly grows due to developing new communication services. But, when data rates increase the optical system performance degrades due to dispersion, which was taken into account in this research. Where as the reduction of dispersion losses is important in optical networks. Fiber Bragg Grating (FBG) is one of the most important components of optical communication systems, and one of the effective methods used for this goal. This article tests the effect of using FBG as dispersion compensator in optical communication systems, where we simulate optical communication system using FBG. And study the effect of Erbium Doped Fiber Amplifier (EDFA) and FBG and fiber optic parameters on this system performance, and it has been finding the best values of the system parameters. Which the simulation model depended on two Optisystem7 and Matlab software. We evaluate performance through eye diagram and two factors Q, Bit Error Rate (BER).Downloads
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