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Proceedings Paper

Simulation study of BER and signal-to-noise ratio of multichannel optical subcarrier modulated QAM-VDSL signals
Author(s): Vinod A. Lalithambika; Fu-Chuan Lin; David M. Holburn; Robert J. Mears; Chak H. Hum; Stuart D. Walker
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Paper Abstract

This work is a part of the project entitled Optical Access Key featuring Low-Power Electronic Adaptive Function (OAKLEAF). A partnership has been formed between the Universities of Cambridge and Essex that aims to build on existing research and has two thrusts; verify that VDSL modem compensation techniques can include impairments present in a complete link comprising optoelectronic, radio and copper media components and to produce a demonstrator showing ho VCSEL-based bandpass modulators may offer an effective interface for hybrid xDSL/optoelectronic access networks. In order to analyze and assess the effect of VCSEL non-linearities in a bandpass modulation context a simulation study has been carried out on an 8-channel optical sub-carrier modulated QAM-VDSL system. Also, a new integrated circuit functional block, a combiner and laser driver with predistortion circuit has been designed and simulated to compensate for the non-linearities of the VCSEL.

Paper Details

Date Published: 7 May 2004
PDF: 7 pages
Proc. SPIE 5281, Optical Transmission, Switching, and Subsystems, (7 May 2004); doi: 10.1117/12.520489
Show Author Affiliations
Vinod A. Lalithambika, Univ. of Cambridge (United Kingdom)
Fu-Chuan Lin, Univ. of Cambridge (United Kingdom)
David M. Holburn, Univ. of Cambridge (United Kingdom)
Robert J. Mears, Univ. of Cambridge (United Kingdom)
Chak H. Hum, Univ. of Cambridge (United Kingdom)
Stuart D. Walker, Univ. of Essex (United Kingdom)

Published in SPIE Proceedings Vol. 5281:
Optical Transmission, Switching, and Subsystems
Cedric F. Lam; Chongcheng Fan; Norbert Hanik; Kimio Oguchi, Editor(s)

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