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Full-duplex DOCSIS/wirelessDOCSIS fiber-radio network employing packaged AFPMs as optical/electrical transducers
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2007 (English)In: Journal of Lightwave Technology, ISSN 0733-8724, E-ISSN 1558-2213, Vol. 25, no 3, 673-684 p.Article in journal (Refereed) Published
Abstract [en]

A hybrid fiber-radio access network architecture for simultaneous wireline and wireless transmissions of Data-Over-Cable Service Interface Specification (DOCSIS) signals is presented. An all-optical harmonic up-conversion technique using a dual-drive Mach-Zehnder modulator provides the downstream optical signal modulated not only at the intermediate frequency in the 600- to 900-MHz band for wireline transmission but also at the up-converted frequency in the 5.45- to 5.75-GHz band for wireless transmission. An InGaAsP/InGaAsP multiple-quantum-well asymmetric Fabry-Perot modulator/detector has been designed, fabricated, and packaged and has been employed in the base station (BS) as an optical/electrical transducer, simultaneously providing the functions of optical intensity modulation and photodetection. At the BS, the DOCSIS signals are recovered at the wireline and wireless frequencies for the respective feeding of a cable access network or a fixed wireless access network in a highly flexible approach. Full-duplex operation has been demonstrated for both access types in an indoor laboratory environment. In a subsequent small-scale field trial, real-life Internet traffic provided by a local community antenna television system operator has been transported over the present hybrid fiber-radio access network architecture, and simultaneous transmission of both DOCSIS and digital television signals has also been performed.

Place, publisher, year, edition, pages
2007. Vol. 25, no 3, 673-684 p.
Keyword [en]
asymmetric Fabry-Perot modulator (AFPM), broadband access networks, frequency conversion, hybrid fiber-wireless access networks, microwave photonics, radio-on-fiber, transmission, baseband, signals, band
URN: urn:nbn:se:kth:diva-16563DOI: 10.1109/jlt.2006.889674ISI: 000245831900003ScopusID: 2-s2.0-34247173104OAI: diva2:334605
QC 20100525Available from: 2010-08-05 Created: 2010-08-05Bibliographically approved

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Kjebon, OlleSchatz, Richard
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Optics and Photonics
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