Reducing BER for Long Haul 32 Channel WDM Network using Mix Dispersion Compensation Technique
Keywords:
Wavelength division multiplexing (WDM), Dispersion compensating fiber dispersion (DCF), Single mode fiber (SMF), Bit error rate (BER)Abstract
The purpose of this paper is to increase the length of optical fiber for long-haul transmission in WDM systems, specifically a system employing a single-mode optical fiber for 32 channels using the Dispersion Compensation Technique. There are three types of dispersion compensation techniques: the first is PRE Compensation Technique, the second is POST Compensation Technique, and the third is MIX Compensation Technique. In this paper, we investigate the MIX Compensation Technique. In this technique, the fiber placement follows the sequence of DCF, SMF, DCF, and EDFA amplifiers. The WDM system adheres to the following configuration scheme: RZ-modulation encoding at the transmitter side with a bit rate of 10 Gbit/s and 32 channels with a channel spacing of 100 GHz. On the receiver side, we use avalanche photodiodes (APDs) because APDs offer a combination of high speed and high quantum efficiencies. In this thesis, we have taken standard single-mode optical fiber with a dispersion of 16 ps/nm-km and dispersion compensation fiber with a dispersion of -100 ps/nm-km to compensate for the dispersion of the optical fiber, with a fiber span of 10 km. Using these parameters, we can reduce the bit error rate and improve the Q-factor for 32-channel long-haul transmission. In this work, we are transmitting the signal up to 150 km with a minimum bit error rate and an improved Q-factor.
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