| 摘要 |
<p>Various opto-electronic oscillator configurations and their applications are presented. A versatile photonic radio frequency (RF) oscillator employs a single optical feedback loop, or multiple feedback loops of different delay times and including at least one optical feedback loop, to generate RF signals with ultra-low phase noise, narrow spectral linewidth, and a continuous wide tuning range of high resolution. Specifically, an electro-optical modulator and a long optical fiber loop are implemented in one dual-loop system. In addition, a light beam from a light source can be directly modulated by using a single optical feedback signal, or a plurality of feedback signals from multiple feedback loops, to alter the electrical control signal to the light source. Furthermore, the disclosed system supports both electrical and optical RF outputs. External optical injection and electrical injection can be implemented.
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