Title: 20-Gbps WDM-PON transmissions employing weak-resonant-cavity FPLD with OFDM and SC-FDE modulation formats
Authors: Lu, I-Cheng
Wei, Chia-Chien
Jiang, Wen-Jr
Chen, Hsing-Yu
Chi, Yu-Chieh
Li, Yi-Cheng
Hsu, Dar-Zu
Lin, Gong-Ru
Chen, Jyehong
Department of Photonics
Issue Date: 8-Apr-2013
Abstract: Using a colorless weak-resonant-cavity (WRC) FPLD injected by a centralized light source, we have experimentally demonstrated a superior performance of 20-Gbps uplink transmission in a WDM-PON. Even though the typical modulation bandwidth of a WRC-FPLD is only similar to 1.25 GHz, using spectrally-efficient 32-QAM OFDM or SC-FDE modulation, 20-Gbps uplink signals can achieve the FEC limit after 25-km dispersion-uncompensated single-mode fiber transmission. Because of the advantage of lower PAPR, the SC-FDE signals outperform the OFDM signals with the fixed 32-QAM format in the proposed system; moreover, SC-FDE scheme can be another promising candidate for uplinks in WDM-PONs, for its simplification to ONUs. The signal at the mode of 1560.7 nm shows similar quality with the signal at the modes of 1545.3 nm and 1574.7 nm, the WRC-FPLD, accordingly, has wide injection wavelength range from at least 1545.3 nm to 1574.7 nm. With the mode spacing of 0.55 nm, consequently, we have demonstrated the applicability of the colorless WRC-FPLD on supporting up to 36 channels in the WDM-PON. (C) 2013 Optical Society of America
URI: http://dx.doi.org/10.1364/OE.21.008622
ISSN: 1094-4087
DOI: 10.1364/OE.21.008622
Volume: 21
Issue: 7
Begin Page: 8622
End Page: 8629
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