NDLI: Design and demonstration of a colorless WDM-OFDMA PON system architecture achieving symmetric 20-Gb/s transmissions with residual interference compensation.

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Design and demonstration of a colorless WDM-OFDMA PON system architecture achieving symmetric 20-Gb/s transmissions with residual interference compensation.

Content Provider	Semantic Scholar
Author	Chen, Hsing-Yu Yuang, Maria C. Tien, Po-Lung Hsu, Dar-Zu Wei, Chia-Chien Tsai, Yu-Shen Chen, Jyehong
Copyright Year	2013
Abstract	In this paper, we propose a two-tiered colorless WDM-OFDMA PON system architecture that draws strengths from each individual WDM and OFDM PON systems. Specifically, the two-tiered architecture enables a colorless transceiver to be shared by a group of ONUs, resulting in drastic reduction of the system cost. For achieving colorlessness via reusing downstream light sources, we discover the residual power of downstream signal unexpectedly springs back after transmissions, causing severe interference to the upstream signal, and thus limiting the data rate of the upstream signal. We devise a method of adopting a common dispersion compensation module at OLT to reduce the residual power over all wavelengths. Experimental results show that, with an improvement of upstream signal's SNR up to 10 dB, the system successfully achieves 20-Gb/s bidirectional OFDM-signal transmissions on the same wavelength over a 20-km SMF.
File Format	PDF HTM / HTML
DOI	10.1364/OE.21.021097
PubMed reference number	24103984
Journal	Medline
Volume Number	21
Issue Number	18
Alternate Webpage(s)	https://ir.nctu.edu.tw/bitstream/11536/22756/1/000324867100073.pdf
Journal	Optics express
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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