Comparative Performance Study in 32 Multiplexed Channels Optical Transmission in Bit Rates 10, 20, 30,40Gbps with NZDSF
Devendra Kr. Tripathi1, H. K. Dixit2, N. K. Shukla3

1Devendra Kr.Tripathi, J. K. I. T, University of Allahabad, Allahabad, India.
2Hemant Kr. Dixit, J. K. I. T, University of Allahabad, Allahabad, India.
3Narendra Kr. Shukla, J. K. I. T, University of Allahabad, Allahabad, India.
Manuscript received on October 09, 2011. | Revised Manuscript received on October 24, 2011. | Manuscript published on November 05, 2011. | PP: 322-326 | Volume-1 Issue-5, November 2011. | Retrieval Number: E0237101511/2011©BEIESP
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Abstract: In this paper we have done comparative performance study for four different optical systems, each of thirty two multiplexed channels and spaced 100GHz. Multiplexed systems operating at 10, 20, 30 and40Gb/s/ch with non return-to-zero (NRZ) signal. The transmitted power is kept constant while the bit-rate and the length of the fiber are varied and the observations are based on the modeling and numerical simulation of optimum dispersion-managed transmission link .Performance study is done for variable fiber span length for NZDSF.It is observed that at low bit rate (10Gb/s/ch) per channel multiplexed optical system shows much better performance metrices (Q, BER, eye pattern) for variable fiber span. But with increase in per channel bit rate over10Gb/s/ch viz 20 Gb/s/ch, 30Gb/s/ch and 40Gb/s/ch transmission performance degrades on the increase of fiber length, it is much higher for 40Gb/s/ch multiplexed optical system as compared to other systems operating on 20, 30Gb/s/ch bit rate.
Keywords: DWDM, OSNR, SPM, XPM.