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WDM Transmission of 1.25 Gb/s 4-QAM photonic vector modulated signals together with 155 Mb/s baseband and a UMTS signal in a dynamically reconfigurable network is demonstrated.
A novel technique for envelope detection of wireless signals using a single Mach-Zehnder modulator is presented. Experimental demonstration of 1.25 Gbit/s ASK modulated 35 GHz carrier envelope detection is presented.
In this paper, a technique for demodulation of vector modulated signals like QAM, using photonic techniques is presented. The photonic vector demodulator is capable of converting broadband wireless QAM signals into independent inphase and quadrature optical baseband signals. Experimental demonstration of demodulation of 2.5 Gbit/s QAM modulated 20 GHz carrier is presented. Bit error ratio of the demodulated-I...
A novel photonic vector modulator architecture for generating pure quadrature amplitude modulation (QAM) signals is presented. No electrical devices apart from the local oscillator are needed in the generation process. Both binary and multilevel digital signals can be used to generate quadrature phase shift keying (QPSK) or multilevel QAM (M-QAM) digital modulations at any carrier frequency. A pure...
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