Journal
JOURNAL OF LIGHTWAVE TECHNOLOGY
Volume 40, Issue 10, Pages 3338-3346Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JLT.2022.3172246
Keywords
Modulation; Optical modulation; Optical fibers; Optical waveguides; Adaptive optics; Optical receivers; Optical pulses; Intensity modulation and direct detection; plasmonic Mach-Zehnder modulator; ultrahigh-speed optical transmission
Funding
- Flemish Government funding Agency VLAIO through the SPIC Project [HBC.2020.2197]
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This article summarizes the experimental exploration of an ultrabroad-bandwidth plasmonic Mach-Zehnder modulator in a short-reach optical transmission system. The modulation, transmission, and reception performance under different schemes are studied, and specific bit rates are provided.
We summarize our experimental exploration of the capabilities of an ultrabroad-bandwidth plasmonic Mach-Zehnder modulator (MZM), in an intensity modulation and direct detection (IM/DD) system for short-reach optical transmission up to 10 km. We study modulation, transmission, and reception of ultrahigh-symbol-rate (up to 304 GBd) multi-level optical signals with two different signaling schemes: pulse amplitude modulation (PAM), with up to 8 amplitude levels and partial-response-encoded binary (polybinary) modulation with memory length up to 4. By mapping the performance to a concatenated soft-decision (SD) and hard-decision (HD) forward error correction (FEC) coding scheme, a net bitrate of 363.4 Gbit/s is possible with PAM-8 signaling and 279.0 Gbit/s with tetrabinary (polybinary) signaling after 10 km standard single-mode fiber transmission. Considering an HD-only coding scheme, a net bitrate of 318.0 Gbit/s is possible with PAM-6 and 277.1 Gbit/s with tetrabinary.
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