Jabbar Kh. Mohammed
Abstract
Fiber Bragg gratings (FBGs) are one of the most effective technologies becauseof their suitability in many applications of the fiber techniques. Moreover, it can be utilizedin sensing elements and estimating the physical parameters of the optical fiber. In thecurrent research, various fiber bragg lengths ...
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Fiber Bragg gratings (FBGs) are one of the most effective technologies becauseof their suitability in many applications of the fiber techniques. Moreover, it can be utilizedin sensing elements and estimating the physical parameters of the optical fiber. In thecurrent research, various fiber bragg lengths are considered and a comparativeinvestagtion is made for the performance of the refractive index modulation at two differentapodization profiles namely: Gaussian index profiles and uniform index profiles. Also, acomparative study of the optical communication system performance has been carried outof refractive indexes with two apodization functions. A comprehensive comparison in termsof gain, noise figure, OSNR, quality factor, bit error rate and power has been performedwhere the performance of the optical system is studied under various optical channellengths (from 25 km to 100 km) with various FBG lengths, which are ranged from 4 mm to14 mm in both apodization profiles, i.e. uniform profile and Gaussian profile. In order tocarry out the simulation of the performance RZ, the optisystem version 9 is used for singlechannel based on over single mode fiber. The results showed that the maximum Q.F. as theperformance parameter is obtained at the FBG length of 8 mm at all optical lengths.Moreover, the varation effect of optical fiber channel length was greater than the varationeffect of refractive index for all the studied parameters (gain, noise figure, OSNR, qualityfactor, BER, and power) for two apodization functions.
