Impact Analysis of PMD and GVD on the Performance of Optical Fiber Communication Employing OFDM – QAM Technique
Md Shahabul Alam1, Md Abul Hossain2

1Md Shahabul Alam, Department of Electrical and Electronic Engineering, Khulna University of Engineering and Technology, Khulna Bangladesh.
2Md Abul Hossain, LM Ericsson Bangladesh Ltd, Khulna University of Engineering and Technology, Dhaka Bangladesh.
Manuscript received on 10 September 2013 | Revised Manuscript received on 19 September 2013 | Manuscript Published on 30 September 2013 | PP: 58-63 | Volume-3 Issue-4, September 2013 | Retrieval Number: D1189093413/13©BEIESP
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Abstract: In this paper the performance of optical fiber communication system is analytically investigated on account of fiber chromatic and polarization mode dispersion employing OFDM-QAM. The influence of the dispersions on the signal spectrum is determined as a function of fiber length, Bit rate and dispersion parameters for intensity modulation/ direct-direct (IM/DD) receiver. It is found that the bit error rate (BER) performance of the system is highly dependent on fiber length, bit rate and dispersion parameters. The power penalty suffered by the system is evaluated at BER=10-09 for single mode fiber operating at 1.55 µm wavelength. It is found that the proposed system performance mainly degrades due to dispersion when the system operates at higher bit rates.
Keywords: OFDM-QAM, Communications System Performance, Group-Velocity Dispersion, Polarization-Mode Dispersion, Chromatic Dispersion, Bit Error Rates.

Scope of the Article: Wireless Communications