224-Gbps single-photodiode PAM-4 transmission with extended transmitter bandwidth based on optical time-and-polarization interleaving

Xiaoling Zhang, Yan Fu, Deming Kong, Longsheng Li, Shi Jia, Jin Wei, Chen Chen, Chongfu Zhang, Kun Qiu, Hao Hu*

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

35 Downloads (Pure)

Abstract

We have proposed and demonstrated the optical time-and-polarization interleaving (OTPI) technique, which can effectively extend the transmitter bandwidth for an intensity modulation and direct detection (IM/DD) optical system. The 224-Gbit/s line-rate OTPI-PAM-4 signal is successfully transmitted over a 500-m standard single-mode fiber (SSMF) in the C band, using the transmitter with a bandwidth of 25 GHz and the receiver with a single photodiode. By using a 33%-return-to-zero (RZ) pulse train, a bit-error ratio (BER) below 7% hard-decision forward error correction (HD-FEC) threshold is achieved. BER below 20% soft-decision forward error correction (SD-FEC) threshold is also realized using a carrier suppressed return-to-zero (CSRZ) pulse train. The OTPI technique can also be used for more higher-order pulse amplitude modulation (PAM) formats, making it a promising technique for next-generation high-speed optical interconnects.

Original languageEnglish
JournalOptics Express
Volume28
Issue number14
Pages (from-to)21155-21164
ISSN1094-4087
DOIs
Publication statusPublished - 6 Jul 2020

Fingerprint

Dive into the research topics of '224-Gbps single-photodiode PAM-4 transmission with extended transmitter bandwidth based on optical time-and-polarization interleaving'. Together they form a unique fingerprint.

Cite this