Optically generated electrical-modulation formats in digital-microwave link applications

Author

Candelas, P. ; Fuster, J.M. ; Marti, J. ; Roig, J.C.

Author_Institution

Univ. Politecnica de Valencia, Spain

Volume

21

Issue

2

fYear

2003

Firstpage

496

Lastpage

499

Abstract

We investigate a novel technique to generate the transmission signal in digital-microwave link applications. This technique is based on a photonic device that achieves both electrical modulation (QAM, PSK, ASK) and harmonic upconversion of the microwave carrier. Simulation results are provided for a seventh-harmonic 38.5-GHz transmission of a 2.5-Gbps signal through a 1-km fiber span. The impact of fiber chromatic-dispersion on the link bandwidth is also analyzed.

Keywords

amplitude shift keying; electro-optical modulation; microwave links; microwave photonics; optical fibre dispersion; optical harmonic generation; phase shift keying; quadrature amplitude modulation; 1 km; 2.5 Gbit/s; 38.5 GHz; ASK; Mach-Zehnder electrooptical modulators; PSK; QAM; digital-microwave link; electrical modulation; fiber chromatic-dispersion; link bandwidth; microwave carrier harmonic upconversion; optically generated electrical-modulation formats; photonic device; seventh-harmonic transmission; simulation results; transmission signal generation; Bandwidth; Electrooptic modulators; Frequency; Microwave devices; Optical fibers; Optical modulation; Phase shift keying; Quadrature amplitude modulation; Signal generators; Voltage;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/JLT.2003.808775

Filename

1193834