Open AccessReal-time reception of multi-gigabit coherent optical OFDM signals
Author(s) -
Qi Yang,
Simin Chen,
Yaoguang Ma,
William Shieh
Publication year - 2009
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.17.007985
Subject(s) - orthogonal frequency division multiplexing , electronic engineering , computer science , gigabit , polarization mode dispersion , signal processing , optical communication , sensitivity (control systems) , digital signal processing , field programmable gate array , converters , optics , computer hardware , telecommunications , physics , electrical engineering , optical fiber , engineering , channel (broadcasting) , voltage
Coherent Optical OFDM (CO-OFDM) has been demonstrated for delivering superior performance in spectral efficiency, receiver sensitivity, and polarization-dispersion resilience. Fueled by the rapid advancement in semiconductor technology, high-speed field-programmable gate arrays (FPGA) and analogue-to-digital-converters/digital-to-analogue converters (ADC/DACs) have been increasingly adopted for digital signal processing in optical communications. In this paper, we report the first FPGA-based real-time implementation of coherent optical OFDM (CO-OFDM) receiver with a transmission rate up to 3.1 Gb/s. Several basic aspects of CO-OFDM signal processing are described in detail, and the BER sensitivity performance are evaluated in real-time. To the best of our knowledge, we have achieved the record real-time reception date rate for a single-input single-output (SISO) coherent OFDM signal, in either RF domain or optical domain.