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Proceedings Paper

Optical frequency up-conversion in multimode and single-mode fiber radio systems
Author(s): Anthony Ng'oma; Antonius M. J. Koonen; Idelfonso Tafur-Monroy; H. P.A. vd. Boom; Patrick F.M. Smulders; Giok-Djan Khoe
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Paper Abstract

Using a novel optical frequency multiplication technique, microwave signal carriers up to 20-GHz are delivered to a significantly simplified remote radio access unit fed by a multimode fibre link having modal bandwidth below 1-GHz, as well as standard single mode fibre. Measurement results show that the remotely generated carriers have very narrow linewidths below 20-Hz, and exhibit much lower phase noise (< -90 dBc/Hz) than even a commercially available high frequency electronic signal generator. Thus by using optical frequency multiplication, existing in-building silica multimode fibre infrastructure, and the emerging polymer optical fibres may be used to not only transport fixed data services such as gigabit Ethernet but also to transparently distribute in-doors (and for short links), signals of present WLANs as well as future broadband WLAN services leading to significant system-wide cost reduction. It also enables the radio signal processing to be consolidated in a single central site, which is beneficial for advanced signal processing such as needed in multiple-input multiple output (MIMO) systems.

Paper Details

Date Published: 1 September 2004
PDF: 9 pages
Proc. SPIE 5466, Microwave and Terahertz Photonics, (1 September 2004); doi: 10.1117/12.548963
Show Author Affiliations
Anthony Ng'oma, COBRA Institute, Technische Univ. Eindhoven (Netherlands)
Antonius M. J. Koonen, COBRA Institute, Technische Univ. Eindhoven (Netherlands)
Idelfonso Tafur-Monroy, COBRA Institute, Technische Univ. Eindhoven (Netherlands)
H. P.A. vd. Boom, COBRA Institute, Technische Univ. Eindhoven (Netherlands)
Patrick F.M. Smulders, COBRA Institute, Technische Univ. Eindhoven (Netherlands)
Giok-Djan Khoe, COBRA Institute, Technische Univ. Eindhoven (Netherlands)

Published in SPIE Proceedings Vol. 5466:
Microwave and Terahertz Photonics
Andreas Stohr; Dieter Jager; Stavros Iezekiel, Editor(s)

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