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100 Gb/s/λ duo-binary PAM-4 transmission using 25G components achieving 50 km reach
IEEE Photonics Technology Letters ( IF 2.6 ) Pub Date : 2020-02-01 , DOI: 10.1109/lpt.2019.2962326
Md. Ghulam Saber , Ramon Gutierrez-Castrejon , Md. Samiul Alam , Zhenping Xing , Eslam El-Fiky , Luhua Xu , Fabio Cavaliere , Gemma Vall-Llosera , Stephane Lessard , David V. Plant

We demonstrate 100 Gb/s/ $\lambda $ duo-binary PAM-4 (DB-PAM-4) transmission over 50 km standard single-mode fiber (SMF) in the O-band using a 20G silicon-based transmitter and a 25G optically-amplified PIN+TIA-based receiver for 100G PON downstream applications. Receiver sensitivities of −15, −14.5 and −12 dBm are achieved at a bit error rate (BER) below the low-density parity-check forward error correction (LDPC-FEC) threshold (i.e., $1\times 10^{-2}$ ) in back-to-back (B2B), and after 20 and 50 km, respectively using a 131-tap linear feed-forward equalizer (FFE) at the receiver. According to the results, a power budget of 20 dB can be achieved for 20 km transmission. Furthermore, we report the performance of 99 Gb/s (33 Gbaud) PAM-8 transmission and show that DB-PAM-4 provides 5.3 dB better sensitivity compared to PAM-8 at the LDPC-FEC threshold.

中文翻译:

100 Gb/s/λ 双二进制 PAM-4 传输使用 25G 组件实现 50 公里范围

我们展示了 100 Gb/s/ $\lambda $ 双二进制 PAM-4 (DB-PAM-4) 在 O 波段使用 20G 硅基发射器和 25G 光放大 PIN+TIA 接收器在 O 波段通过 50 公里标准单模光纤 (SMF) 传输,用于100G PON下行应用。-15、-14.5 和 -12 dBm 的接收器灵敏度是在低于低密度奇偶校验前向纠错 (LDPC-FEC) 阈值(即, $1\乘以 10^{-2}$ ) 在背靠背 (B2B) 和 20 公里和 50 公里之后,分别在接收器处使用 131 抽头线性前馈均衡器 (FFE)。根据结果​​,20 公里传输可以实现 20 dB 的功率预算。此外,我们报告了 99 Gb/s (33 Gbaud) PAM-8 传输的性能,并表明 DB-PAM-4 在 LDPC-FEC 阈值下提供比 PAM-8 高 5.3 dB 的灵敏度。
更新日期:2020-02-01
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