Title :
Low-power optical feeder for VDSL over twisted pair for last mile access networks
Author :
Dudley, Sandra E M ; Quinlan, Terence J. ; Henning, Ian D. ; Walker, Stuart D. ; Davey, Russell P. ; Wallace, Andrew D. ; Boyd, Ivan ; Payne, Dave B.
Author_Institution :
Electr., London South Bank Univ., UK
Abstract :
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.
Keywords :
digital subscriber lines; optical fibre subscriber loops; optical fibres; optical modulation; quadrature amplitude modulation; transformers; 1 cm; 1 km; 10 Mbit/s; 10 km; 165 mW; 3 cm; VDSL; broadband home access; cabinet-distribution point interface; downstream channel isolation; hybrid transformers; last mile access networks; low-power optical feeder; optical fiber; optoelectronic system; quadrature-amplitude-modulation; system tests; twisted fiber pair; upstream channel isolation; very-high-data-rate digital subscriber line; Bandwidth; Costs; DSL; Optical fiber networks; Optical fiber subscriber loops; Optical fibers; Photodiodes; Power lasers; Quadrature amplitude modulation; Transformers; Hybrid transformers; lasers; low power; photodiodes; unshielded twisted pair (UTP); very-high-data-rate digital subscriber line (VDSL);
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2005.861120
