International Journal of Engineering and Management Research (IJEMR)
Year : 2017, Volume : 7, Issue : 4
First page : ( 227) Last page : ( 237)
Print ISSN : 2394-6962. Online ISSN : 2250-0758.

Simulative Evaluations of in Band and Out of Band Crosstalk Penalties for Advanced Modulation Formats in Wavelength Division Multiplexed (WDM) Networks

Bashir Malik Efshana, Singh Karamdeep, Devra Shivinder

Department of Electronics Technology, Guru Nanak Dev University, Amritsar, India

Online published on 31 October, 2017.

Abstract

Optical wavelength division multiplexing (WDM) networks have come forward as a unique solution to the rapidly increasing network demands. However, WDM systems suffer from a severe limitation of linear and nonlinear inter-channel crosstalk. In this paper, the effects of particularly linear inter-channel crosstalk are enlightened and analyzed. Bit error rate (BER) analysis in the scenario of in band and out band crosstalk for various advanced modulation formats is performed by calculating power penalties of the received signals compared with back to back analysis. In order to evaluate the crosstalk induced on a test channel by neighbor aggressor channels, a detuning (out band) crosstalk measurement technique is used. In this technique, the sliding of central frequency of an aggressor channel towards a test channel is carried out and the impact of crosstalk at the test channel is evaluated. In the long run we came to the result that channel spacing and power level affects the quality of a signal in terms of BER. Also, it is seen that in band analysis shows maximum distortion and inter-channel crosstalk compared to out band analysis.

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Keywords

In band crosstalk, out band crosstalk, power penalties, channel spacing.

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