Influence of degenerate four-wave mixing on the performance of supercontinuum-based multiwavelength optical source |
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Authors: | Zhao Xiao-Fan Yang Yan-Fu Zhou Hong-Bo Lou Cai-Yun and Gao Yi-Zhi |
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Institution: | Department of Electronic Engineering, Tsinghua University, Beijing 100084, China |
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Abstract: | The influence of degenerate four-wave mixing (FWM) on the performance of
supercontinuum-based multiwavelength optical source has been investigated in
detail experimentally and theoretically. Numerical simulation results show
that the degenerate FWM effect has a deteriorative influence on the spectral
uniformity and the optical signal-to-noise ratio (OSNR) of
supercontinuum-based optical source, and by suppressing degenerate FWM
effect the performance enhancement of the supercontinuum can be achieved
successfully. These results are also confirmed by our experiments.
Experimentally, by suppressing degenerate FWM the crosstalk of adjacent
channels to the filtered channel can be reduced by as much as 15 dB, and
consequently the measured receiver sensitivity at 10 Gbit/s for the filtered
optical source is improved from $-1.7$ to $-17.8$~dBm. |
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Keywords: | supercontinuum self-phase modulation degenerate
four-wave mixing |
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