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16 April 2010 Improved microwave photonic link performance through optical carrier suppression and balanced coherent heterodyne detection
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Abstract
We present a microwave photonic link architecture that enables high gain and dynamic range, low noise figure, and multi-octave bandwidth operation. Our method uses double sideband suppressed carrier modulation together with a balanced coherent heterodyne detection scheme. The modulation method increases link linearity by producing carriersuppressed amplitude modulation based on the optical field rather than intensity. The combination of carrier suppression, optical amplification, phase-locked local oscillator insertion, and balanced detection provide high signal-efficient gain, reduced intermodulation distortion, wide-band operation, frequency agile spectrum access, and low link noise.
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Charles Middleton and Richard DeSalvo "Improved microwave photonic link performance through optical carrier suppression and balanced coherent heterodyne detection", Proc. SPIE 7700, Enabling Photonics Technologies for Defense, Security, and Aerospace Applications VI, 770008 (16 April 2010); https://doi.org/10.1117/12.850087
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