Low Distortion Multicasting of an Analog Signal by Self-Seeded Parametric Mixer

We present a linear multicast of an analog signal in a two-pump self-seeded parametric device. The linearity of the parametric multicasting is assessed by two-tone measurements of the third-order intermodulation products and radio-frequency spectral analysis. Experimental results show the linear behavior of a four-photon mixer over a wide range of input signal power.