Details

Autor(en) / Beteiligte

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

Titel

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

Ist Teil von

• Optics express, 2017-06, Vol.25 (12), p.13359-13371

Ort / Verlag

United States

Erscheinungsjahr

2017

Quelle

EZB Electronic Journals Library

Beschreibungen/Notizen

• 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.