Half-cycle modulation for VCSEL based 6-Gbaud 4-QAM transmission over 1 km multimode fibre link

Tien Thang Pham, Roberto Rodes Lopez, Jose Manuel Estaran Tolosa, Jesper Bevensee Jensen, Idelfonso Tafur Monroy

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

A subcarrier multiplexing system with the subcarrier frequency at half the baud rate to improve the spectral efficiency is demonstrated. A 12 Gbit/s 4-QAM signal in 9GHz bandwidth was successfully transmitted over a 1 km OM4 MMF 850 nm VCSEL without any equalisation method. The 1.5 dB power penalty was improved compared to an OOK signal at the same data rate.
Original languageEnglish
JournalElectronics Letters
Volume48
Issue number17
Pages (from-to)1074-1076
ISSN0013-5194
DOIs
Publication statusPublished - 2012

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