| 摘要 |
<p>A coherent receiver for electromagnetic radiation comprising an input optics means (10) for collecting an input signal of electromagnetic radiation at a frequency FS, an optical local oscillator (100) for generating an optical signal at a frequency FO amplitude-modulated at a frequency FLO, a mixer element (60) responsive simultaneously to the frequencies FS, FO, and FLO, where the input signal is injected electrically into the mixer element and the optical signal is injected optically into the mixer element to produce an output signal at a frequency FIF equal to the difference between FS and FLO, and electronics (50) connected to the mixer element for processing the output signal.</p> |
