13 February 2016 An upstream burst-mode equalization scheme for 40 Gb/s TWDM PON based on optimized SOA cascade
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Abstract
We present a novel upstream burst-mode equalization scheme based on optimized SOA cascade for 40 Gb/s TWDMPON. The power equalizer is placed at the OLT which consists of two SOAs, two circulators, an optical NOT gate, and a variable optical attenuator. The first SOA operates in the linear region which acts as a pre-amplifier to let the second SOA operate in the saturation region. The upstream burst signals are equalized through the second SOA via nonlinear amplification. From theoretical analysis, this scheme gives sufficient dynamic range suppression up to 16.7 dB without any dynamic control or signal degradation. In addition, a total power budget extension of 9.3 dB for loud packets and 26 dB for soft packets has been achieved to allow longer transmission distance and increased splitting ratio.
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Xiao Sun, Xiao Sun, Qingjiang Chang, Qingjiang Chang, Zhensen Gao, Zhensen Gao, Chenhui Ye, Chenhui Ye, Simiao Xiao, Simiao Xiao, Xiaoan Huang, Xiaoan Huang, Xiaofeng Hu, Xiaofeng Hu, Kaibin Zhang, Kaibin Zhang, } "An upstream burst-mode equalization scheme for 40 Gb/s TWDM PON based on optimized SOA cascade", Proc. SPIE 9773, Optical Metro Networks and Short-Haul Systems VIII, 97730F (13 February 2016); doi: 10.1117/12.2212054; https://doi.org/10.1117/12.2212054
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