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Analytical investigations on crosstalk in fiber Raman amplification for WDM systems |
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| Authors: | Vinod Kumar RA Agarwala |
| Institution: | a Department of Electronics and Communication Engineering, National Institute of Technology, Deemed University, Hamirpur 177005, HP, India b Department of Computer Science and Engineering National Institute of Technology, Deemed University, Jalandhar 144011, Punjab, India c Department of Electronics and Communication Engineering, Netaji Subhash Institute of Technology, Dwarka, New Delhi, India |
| Abstract: | In this paper, the analytical investigations for the crosstalk in fiber amplification for WDM channels have been reported. The crosstalk between WDM channels with external Raman amplification including second-order dispersion terms has been investigated. It has been shown that the higher-order dispersion severely degrades the performance of optical communication systems. To ensure small crosstalk, the signal gain and the injected pump power should be limited to the value well below the threshold of Raman amplification. Analytical formula for signal interference ratio (SIR) and gain in fiber Raman amplifier including the impact of second-order dispersion terms for WDM systems has been derived at different wavelengths. It has also been shown that there is increase in crosstalk due to second-order dispersion. |
| Keywords: | WDM&mdash Wavelength Division Multiplexing SIR&mdash Signal Interference Ratio SRS&mdash Stimulated Raman Scattering Raman amplifiers Crosstalk |
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