Journal article
Combining DPSK and duobinary for the downstream in 40-Gb/s long-reach WDM-PONs
Nanophotonic Devices, Department of Photonics Engineering, Technical University of Denmark1
Ultra-fast Optical Communication, Department of Photonics Engineering, Technical University of Denmark2
Department of Photonics Engineering, Technical University of Denmark3
Fudan University4
Diode Lasers and LED Systems, Department of Photonics Engineering, Technical University of Denmark5
Huazhong University of Science and Technology6
We propose and demonstrate combining differential phase-shift keying (DPSK) and duobinary transmission for the downstream in 40-Gb/s long-reach wavelength division multiplexed-passive optical networks (WDM-PONs) in order to provide robust transmission performance in the backhaul section and simple detection at the ONUs.
DPSK is deployed in the trunk span as it provides stronger robustness to fiber nonlinearity. Duobinary is used in the access span where its higher chromatic dispersion tolerance relieves the need for dispersion compensation. All-optical multichannel modulation format conversion from DPSK to duobinary is realized in the local exchange in a single delay interferometer to reduce system cost.
Single and multi-channel 80-km long-reach DPSK transmission and up to 5-km duobinary access transmission are experimentally demonstrated at 40Gb/s. The proposed approach shows great potential for future high data rate optical access networks.
Language: | English |
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Year: | 2013 |
Pages: | 179-184 |
ISSN: | 10959912 and 10685200 |
Types: | Journal article |
DOI: | 10.1016/j.yofte.2012.12.009 |
ORCIDs: | Xiong, Meng and Ou, Haiyan |