Hardware-efficient signal generation of layered/enhanced ACO-OFDM for short-haul fiber-optic links

Qibing Wang, Binhuang Song, Bill Corcoran, David Boland, Chen Zhu, Leimeng Zhuang, Arthur J. Lowery

Research output: Contribution to journalArticleResearchpeer-review

12 Citations (Scopus)

Abstract

Layered/enhanced ACO-OFDM is a promising candidate for intensity modulation and direct-detection based short-haul fiber-optic links due to its both power and spectral efficiency. In this paper, we firstly demonstrate a hardware-efficient real-time 9.375 Gb/s QPSK-encoded layered/enhanced asymmetrical clipped optical OFDM (L/E-ACO-OFDM) transmitter using a Virtex-6 FPGA. This L/E-ACO-OFDM signal is successfully transmitted over 20-km uncompensated standard single-mode fiber (S-SMF) using a directly modulated laser. Several methods are explored to reduce the FPGA's logic resource utilization by taking advantage of the L/E-ACO-OFDM's signal characteristics. We show that the logic resource occupation of L/E-ACO-OFDM transmitter is almost the same as that of DC-biased OFDM transmitter when they achieve the same spectral efficiency, proving its great potential to be used in a real-time short-haul optical transmission link.

Original languageEnglish
Pages (from-to)13359-13371
Number of pages13
JournalOptics Express
Volume25
Issue number12
DOIs
Publication statusPublished - 12 Jun 2017

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