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Rayleigh Backscattering Performance of OFDM-QAM in Carrier Distributed Passive Optical Networks

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5 Author(s)
C. W. Chow ; Dept. of Photonics, Nat. Chiao Tung Univ., Hsinchu ; C. H. Yeh ; C. H. Wang ; F. Y. Shih
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The passive optical network (PON) using an orthogonal frequency-division-multiplexing (OFDM) format is a subject of many research works recently. Due to the high spectral efficiency, low bandwidth optical components can be used in this OFDM-PON. We quantify, for the first time, the performance of the OFDM signal when subjected to the noise generated by the two components of the Rayleigh backscattering (RB): carrier generated RB (carrier-RB) and signal generated RB (signal-RB) that are present in the carrier-distributed PONs. An RB comparison between OFDM quadrature amplitude modulation and nonreturn-to-zero is preformed.

Published in:

IEEE Photonics Technology Letters  (Volume:20 ,  Issue: 22 )