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Performance Enhancement of WDM Systems in the Presence of SRS and Beat Noise using Convolution Codes

Mruthyunjaya, H.S and Umesh, G and Kumar, Sathish M (2005) Performance Enhancement of WDM Systems in the Presence of SRS and Beat Noise using Convolution Codes. In: Proceedings of International Conference on Optics & Optoelectronics, 12-15 Dec. 2005, Dehradun, INDIA.

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Abstract

The power depletion in the short wavelength channels due to Stimulated Raman Scattering (SRS) impairs the system performance considerably and very often the desired Bit Error Rate (BER) is not attainable. This problem is usually countered by placing optical amplifiers in the link to maintain the required BER performance. Also, impact of crosstalk in N х N WDM systems causes high noise power. In this paper we theoretically demonstrate, as one of the methods, the improvement in performance of WDM systems in the presence of SRS and beat noise using convolution codes for forward error correction. We have shown that the use of error control coding technique improves the system performance while keeping the power penalty below 1dB at BER of 10-9. We found that even with more than 140 users, with coding, detector can effectively receive required power in SRS limited WDM systems for link length of 200km. Our results also show that the multiplexer crosstalk effectively comes down from -34dB to -38dB with coding for beat noise limited power penalty of 1dB.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: Nonlinear effects, Stimulated Raman Scattering (SRS), Wavelength Division Multiplexing (WDM), Bit Error Rate (BER), Channel Beat Noise and Error control coding.
Subjects: Engineering > MIT Manipal > Electronics and Communication
Depositing User: MIT Library
Date Deposited: 27 Jul 2011 06:42
Last Modified: 27 Jul 2011 06:42
URI: http://eprints.manipal.edu/id/eprint/989

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