800 Gbit/s transmission over 1 km single-mode fiber using a four-channel silicon photonic transmitter
| Autor: | Lei Wang, Hongguang Zhang, Yuguang Zhang, Hu Shenglei, Di Zhang, Bo Zhang, Nan Qi, Xi Xiao, Miaofeng Li, Shaohua Yu, Qiwen Liao, Jian He |
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| Rok vydání: | 2020 |
| Předmět: |
Signal processing
business.industry Transmitter 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Signal Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials 010309 optics Optics Transmission (telecommunications) Pulse-amplitude modulation 0103 physical sciences Bit error rate 0210 nano-technology business Digital signal processing Communication channel |
| Zdroj: | Photonics Research. 8:1776 |
| ISSN: | 2327-9125 |
| DOI: | 10.1364/prj.396815 |
| Popis: | We demonstrate the optical transmission of an 800 Gbit/s ( 4 × 200 Gbit / s ) pulse amplitude modulation-4 (PAM-4) signal and a 480 Gbit/s ( 4 × 120 Gbit / s ) on–off-keying (OOK) signal by using a high-bandwidth (BW) silicon photonic (SiP) transmitter with the aid of digital signal processing (DSP). In this transmitter, a four-channel SiP modulator chip is co-packaged with a four-channel driver chip, with a measured 3 dB BW of 40 GHz. DSP is applied in both the transmitter and receiver sides for pre-/post-compensation and bit error rate (BER) calculation. Back-to-back (B2B) BERs of the PAM-4 signal and OOK signal are first measured for each channel of the transmitter with respect to a variety of data rates. Similar BER performance of four channels shows good uniformity of the transmitter between different channels. The BER penalty of the PAM-4 and OOK signals for 500 m and 1 km standard single-mode fiber (SSMF) transmission is then experimentally tested by using one channel of the transmitter. For a 200 Gbit/s PAM-4 signal, the BER is below the hard-decision forward error correction (HD-FEC) threshold for B2B and below the soft-decision FEC (SD-FEC) threshold after 1 km transmission. For a 120 Gbit/s OOK signal, the BER is below SD-FEC threshold for B2B. After 500 m and 1 km transmission, the data rate of the OOK signal shrinks to 119 Gbit/s and 118 Gbit/s with the SD-FEC threshold, respectively. Finally, the 800 Gbit/s PAM-4 signal with 1 km transmission is achieved with the BER of all four channels below the SD-FEC threshold. |
| Databáze: | OpenAIRE |
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