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Remote Upconversion in Microwave Fiber-Optic Links Employing an Unbalanced Mach-Zehnder Interferometer

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Link to refer to this document:
http://hdl.handle.net/10890/16655
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  • Villamosmérnöki tudományok [137]
Abstract
We present a new technique for remote upconversion by inserting a passive all-optical device in the microwave (MW) fiber-optic link. Using a semiconductor laser directly modulated by two MW signals and an unbalanced Mach-Zehnder interferometer (UMZ) to convert optical frequency modulation (FM) into intensity modulation (IM), mixing is achieved after photodetection. Experiments with a UMZ integrated on glass-substrate have demonstrated the feasibility of this optical method for MW mixing with a low cost device of easy fabrication. Temperature control of the device allows optimized mixing performance and stable response. This method permits to overcome the effect of chromatic dispersion in standard singlemode fiber systems operating in the 1.55 μm wavelength window. Due to the presence of high-frequency fundamental components in the optical field, the received power is considerably degraded during transmission and direct detection in conventional systems, using either direct or external modulation in the MW band. With the proposed technique, lower frequency components of the field can be transmitted. The insertion of the simple UMZ generates high frequency only at detection side, therefore the available fiber length is extended. As it is shown by simulation results, this method can be used for the upconversion of MW subcarriers carrying digital signals.
Title
Remote Upconversion in Microwave Fiber-Optic Links Employing an Unbalanced Mach-Zehnder Interferometer
Chapter/Title number
3795-71
Author
Gislaine Maury, Márk
Hilt, Attila
Cabon, Beatrice
GIROD, vincent
Degoud, L
Date of issue
1999-07-23
Access level
Regisztrációhoz kötötten használható
Copyright owner
Szerzők
Conference title
SPIE’s 44th Annual Meeting, Terahertz and Gigahertz Photonics Conference
Conference place
Denver, Colorado, USA
Conference date
1999 July 18-23
Language
en
Page
468 - 476
Subject
Integrated optical device, Fiber-optic links, Chromatic dispersion, Generation of optical-microwave mixing
Version
Post print
Identifiers
DOI: 10.1117/12.370195
MTMT: 3103998
Scopus: 0033308612
Web of Science: 000084753700050
Title of the container document
Proc. of the SPIE’s 44th Annual Meeting, Terahertz and Gigahertz Photonics Conference
ISBN, e-ISBN
ISBN:0-8194-3281-4
ISSN: 0277-786X
Document type
Könyvfejezet
Document genre
Konferenciacikk
Subject area
Műszaki tudományok
Field
Villamosmérnöki tudományok
University
Budapesti Műszaki és Gazdaságtudományi Egyetem
Faculty
Villamosmérnöki és Informatikai Kar
Department
Mikrohullámú Híradástechnika Tanszék

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