Abstract

A novel photonic-vector modulator architecture for the generation of 16 quadrature amplitude modulation (16 QAM) millimeter-wave carriers using dual-drive Mach–Zehnder modulators is proposed. Experimental generation of $5\mathrm{Gbits}∕\mathrm{s}$ 4 amplitude shift-keying (4 ASK) and $10\mathrm{Gbits}∕\mathrm{s}$ 16 QAM modulated $42\mathrm{GHz}$ carriers is reported. The multilevel modulated millimeter-wave signals are demodulated using an electrical receiver and its error-vector magnitude (EVM) estimated from the measurements, obtaining EVMs of $-21.04$ and $-18.33\mathrm{dB}$ for 4 ASK and 16 QAM modulation formats, respectively.

© 2008 Optical Society of America

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