Sicong Xu

Aug 23, 2023 | opg.optica.org | Sicong Xu |Kaihui Wang |Long Zhang |Jianjun Yu

In this experiment, we demonstrated an intensity modulation and direct-detection (IM/DD) system based on a field-programmable gate array (FPGA). The PAM8 signals are successfully delivered at 44.2368 Gbit/s over a 45-km standard single-mode fiber (SSMF), satisfying the soft-decision forward error correction (SD-FEC) criterion of 2.4 × 10−2, and the net bit rate may reach 36.864 Gbit/s without the need of optical amplifiers.

Mar 7, 2023 | opg.optica.org | Wen Zhou |Li Zhao |Bohan Sang |Sicong Xu

AbstractThis Letter proposes a probabilistic shaping delta-sigma modulation technique. By performing delta-sigma modulation on the probability shaping signal at the transmitting end, under the same transmit power and the same net bit rate, the delta-sigma modulation signal based on probability shaping can obtain better anti-noise capability than the delta-sigma modulation signal only.