Wei Chen, Yingxiong Song, Zhengxuan Li, Chengcheng Li, Jian Chen, Yingchun Li. 50 Gbit/s NRZ IM-DD Downstream Transmission System Based on 25G-Class Optical Components[J]. Acta Optica Sinica, 2019, 39(6): 0606003
- Acta Optica Sinica
- Vol. 39, Issue 6, 0606003 (2019)
Fig. 1. Experimental setup for IM-DD NRZ transmission system and eyediagrams
Fig. 2. Flow chart for offline DSP
Fig. 3. Flow chart for synchronization of two-way PRBS
Fig. 4. Parameter curve for transceiver S21
Fig. 5. Estimation for channel impulse response. (a) BtB; (b) over 25 km SSMF
Fig. 6. MLSE BER curves for BtB and 25 km transmission. (a) Fixed channel coefficients; (b) adaptive channel estimation
Fig. 7. BER curves for BtB. (a) FFE; (b) DFE
Fig. 8. BER curves for 25 km transmission. (a) FFE; (b) DFE
Fig. 9. Eyediagrams of received signal and equalized signal. (a) BtB, -20 dBm; (b) 25 km, -22 dBm
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Table 1. Experimental system parameters
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