<![CDATA[Abstrak Terdapat beberapa pilihan untuk mengurangi permasalahan dispersi di sepanjang serat kabel optik. Dalam penelitian ini, pilihan tersebut ada pada Dispersion Compensating Fiber (DCF) dan Fiber Bragg Gratting (FBG). DCF adalah serat optik yang memiliki nilai dispersi negatif, sehingga bisa mengembalikan pelebaran pulsa yang terjadi. FBG adalah sebuah perangkat yang berisikan kisi-kisi indeks bias yang berbeda, bertujuan untuk mengembalikan nilai periode bit, seperti sebelum terjadi dispersi. Baik FBG maupun DCF, memiliki karakternya masing-masing. Sehingga akan diteliti perangkat mana yang layak untuk mengatasi dispersi pada jarak hingga 500 km di jaringan DWDM. DCF memiliki tiga skema, post-dispersion, pre-dispersion dan mix dispersion, sedangkan FBG akan diletakan satu kali pada posisi batas rise time budget. Penelitian ini diharapkan mendapatkan pilihan yang terbaik untuk mengatasi dispersi yang terjadi disepanjang jarak 500 km. Penulis memiliki hipotesis bahwa DCF memiliki keunggulan dibanding DCF, karena penurunan dispersi dilakukan secara bertahap melalui panjang kabel DCF. Akan tetapi, tidak mustahil bahwa FBG bisa lebih baik karena kisi-kisi yang dilewati oleh sinyal bisa mengatasi dispersi pada jarak hingga 500 km.. Kata kunci : Dispersion Compensating Fiber, Fiber Bragg Grating, Dense Wavelength Division Multiplexing, Sistem Komunikasi Optik Abstract Optical communication systems have the advantage of small transmission losses, wide bandwidth, not affected by electromagnetic waves, and data security. So that with its advantages, research continues to be carried out to improve the performance of fiber optic communication systems. There is a major problem in trying to get the advantages it has, namely dispersion along the optical fiber.There are several options for reducing dispersion problems along optical fiber fibers. In this study, the choice was in Dispersion Compensating Fiber (DCF) and Fiber Bragg Gratting (FBG). DCF is an optical fiber that has a negative dispersion value, so it can restore pulse widening that occurs. FBG is a device containing a different refractive index grid, aiming to return a bit period value, such as before dispersion occurs. Both FBG and DCF have their own characters. So that it will be investigated which devices are suitable for dealing with dispersions at distances of up to 500 km on DWDM networks. DCF has three schemes, post-dispersion, pre-dispersion and mix dispersion, while the FBG will be placed once at the rise time budget boundary position. This research is expected to get the best choice to overcome the dispersion that occurs along a distance of 500 km. The author hypothesizes that DCF has an advantage over DCF, because the decrease in dispersion is carried out gradually through the length of the DCF cable. However, it is not impossible that the FBG can be better because the lattice passed by the signal can overcome dispersion at distances of up to 500 km. Keywords: Dispersion Compensating Fiber, Bragg Grating Fiber, Dense Wavelength Division Multiplexing, Optical Communication System]]>
