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Low-power optical feeder for VDSL over twisted pair for last mile access networks

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8 Author(s)
Dudley, S.E.M. ; Electr., London South Bank Univ., UK ; Quinlan, T.J. ; Henning, I.D. ; Walker, S.D.
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In this paper, we describe an ultra-low-power optoelectronic very-high-data-rate digital subscriber line (VDSL) system, enabling broadband access to the home over 10 km of optical fiber and 1 km of twisted pair. The cabinet/distribution point interface has a footprint of just 3 × 3 × 1 cm, and consumes only 165 mW. A quadrature-amplitude-modulation (QAM) scheme was used for system tests with 10 Mb/s full duplex achieved, and up to 40-dB up/downstream channel isolation is obtained using hybrid transformers.

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Lightwave Technology, Journal of  (Volume:24 ,  Issue: 1 )