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Characteristics of Chirped Fiber Bragg Grating Dispersion Compensator Utilizing Two Apodization Profiles

Shaymaa R. Tahhan1, Abdulla K. Abass 2, Mudhafer H. Ali3
1. Laser and Optoelectronics Engineering Department, College of Engineering, Al-Nahrain University, Baghdad, Iraq
2. Laser Engineering Branch, Laser and Optoelectronics Department, University of Technology, Baghdad, Iraq.
3. Network Engineering Department, College of Engineering, Al-Iraqiya University, Baghdad, Iraq.

Abstract—In this work, the effects of two apodization functions on the performance of two dispersion compensators, namely, linear and quadratic chirps, based on chirped fiber Bragg grating (CFBG), are investigated and simulated. The hyperbolic tangent function (Tanh) represents the first profile, which is used directly from OptiSystem 13, while the second function is the sine cardinal (Sinc) profile, which is simulated by OptiGrating 4 software before this profile is incorporated in the OptiSystem. Tanh and Sinc profiles are simulated by linear and quadratic CFBGs for 100 GHz × 10 Gb/s wavelength division multiplexing system within two channels. Results indicate that the linear CFBG that is based on Sinc profile performance with an effective index of 1.46 represents an improved architecture for chromatic dispersion compensation. The proposed CFBG within both apodization profiles efficiently compensated the chromatic dispersion for fiber length > 90 km.

Index Terms—Chirped fiber bragg grating, dispersion compensation, duobinary modulation, sinc apodization, tanh apodization.

Cite: Shaymaa R. Tahhan, Abdulla K. Abass, and Mudhafer H. Ali, "Characteristics of Chirped Fiber Bragg Grating Dispersion Compensator Utilizing Two Apodization Profiles," Journal of Communications, vol. 13, no. 3, pp. 108-113, 2018. Doi: 10.12720/jcm.13.3.108-113.