Title :
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
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;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2003.808775
