www.tjprc.org SCOPUS Indexed Journal editor@tjprc.org COMPARATIVE ANALYSIS OF DISPERSION COMPENSATION USING ELECTRONIC DISPERSION COMPENSATION TECHNIQUES AT DIFFERENT BIT RATES USING SINGLE MODE FIBER SHALINI SHARMA, ASHWANI SHARMA & SWATI THAKUR School of Electrical and Computer Sciences, Shoolini University, Solan, Himachal Pradesh, India ABSTRACT The performance in the fiber optical communication is majorly limited by a phenomenon called dispersion which generally starts growing after 2Gbps data rate. The pulse gets widened as they travel down the fiber. This widening results in dispersion and other non-linearity. Pulses at the output overlap with the neighboring pulses and cause ISI (Inter-Symbol Interference). Distinct techniques are available to lessen the effect of dispersion like DCF, FBG, and electronic equalization. This paper focuses on reducing dispersion present in optical links by using adaptive equalization. To monitor and suppress the chromatic dispersion, simulations are performed using electronic equalizer at 20, 25 and 30Gbps. A comparison is made between the three data rates and found that maximum Q-Factor is attained at 20Gbps. Outcomes from the simulations show the overall improvement in the signal quality. KEYWORDS: Dispersion, Chromatic Dispersion (CD), Dispersion Compensation, Optisystem 7.0, Electronic Dispersion Compensation (EDC), Fiber Bragg Grating, Dispersion Compensating Fiber (DCF), Bit Error Rate (BER) & Q-Factor Received: Mar 22, 2018; Accepted: Apr 12, 2018; Published: May 05, 2018; Paper Id.: IJMPERDJUN201840 1. INTRODUCTION A standout amongst the most vital factors in optical fiber communication is compensation of dispersion. Optical fiber networks are the optical connections which have high information exchange rates and limit. In optical fiber communication networks information is transmitted in the form of light signals from transmitter part to receiver part. Generation of these light signals can be done either by using LEDs (Light Emitting Diode) or Lasers. In any case, similar to other communication networks, optical fiber communication system to faces certain issues like non-linear impacts, absorption, bending losses, dispersion etc. Out of the considerable number of issues looked by fiber optic communication intra modal or chromatic dispersion is regarded as the major crucial element which impacts the performance of a fiber optic communication [1-3]. 1.1. Dispersion There is a phenomenon in an optical communication system in which change in frequency causes the subsequent change in the propagation velocity of the wave. This change makes the waves to reach at the receiver section distinct intervals of time, thereby, causing the pulses to be widened and the phenomenon is known as chromatic dispersion. 1.2. Dispersion Compensation Methods Because of the request for an information rate upper to 10 Gbps the detrimental impacts of dispersion and Original Article International Journal of Mechanical and Production Engineering Research and Development (IJMPERD) ISSN (P): 2249-6890; ISSN (E): 2249-8001 Vol. 8, Issue 3, Jun 2018, 365-374 © TJPRC Pvt. Ltd.