Abstract

A photonic microwave quadrature filter is presented. It has a very simple structure, very low phase imbalance, and high signal-to-noise ratio performance. Experimental results are presented that demonstrate a photonic microwave quadrature filter with a 3 dB operating frequency range of 10.5–26.5 GHz, an amplitude and phase imbalance of less than $\pm 0.3\mathrm{dB}$ and $\pm 0.15°$, and a signal-to-noise ratio of more than 121 dB in a 1 Hz noise bandwidth.

© 2015 Optical Society of America

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