Coherent Optical Interleaved SC-FDM Uplink Scheme for Long-Reach Passive Optical Network

In this paper, we propose a coherent optical interleaved single-carrier frequency-division multiplexing (CO-I-SC-FDM) uplink scheme for the long-reach passive optical network (LR-PON). I-SC-FDM is a modified form of orthogonal frequency-division multiplexing (OFDM) with low computational complexity...

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Bibliographic Details
Published in:IEEE photonics journal 2016-04, Vol.8 (2), p.1-8
Main Authors: Zhou, Ji, Xu, Fei, Sun, Erkun, Zhang, Tiantian, Zhang, Zhenshan, Guo, Mengqi, Tang, Xizi, Wang, Zhansheng, Qiao, Yaojun
Format: Article
Language:English
Subjects:
access and metro networks
Coherence
Coherent optical I-SC-FDM
Coherent optical I-SC-FDM, LR-PON
Complexity
Computation
Encoding
Ethernet
low computational complexity
low PAPR
LR-PON
Modulation
Optical attenuators
Optical communication
Optical transmitters
Orthogonal Frequency Division Multiplexing
Passive optical networks
Peak to average power ratio
Phase shift keying
Splitting
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Summary:In this paper, we propose a coherent optical interleaved single-carrier frequency-division multiplexing (CO-I-SC-FDM) uplink scheme for the long-reach passive optical network (LR-PON). I-SC-FDM is a modified form of orthogonal frequency-division multiplexing (OFDM) with low computational complexity and low peak-to-average power ratio (PAPR). By designing a simple encoding structure, the computational complexity of the transmitter can be reduced from O(Nlog 2 (N)) to O(N). At the probability of 10 -3 , the PAPR of the I-SC-FDM is about 10.7 dB lower than that of conventional OFDM for quadrature phase-shift keying (QPSK) modulation. We experimentally demonstrate a 10-Gb/s CO-I-SC-FDM uplink scheme over 100-km standard single-mode fiber with 1:128-way passive splitter for LR-PON. In the conventional CO-OFDM uplink scheme, the splitting ratio is only 1:64. The proposed scheme shows great potential for application in access and metro networks.
ISSN:1943-0655
1943-0647
DOI:10.1109/JPHOT.2016.2529845