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The optoelectronic oscillator (OEO) is a radio-frequency (RF) source that utilizes lengths of optical fiber in a ring resonator to create low-phase-noise signals. In this work, we demonstrate a novel fiber-optic acoustic sensor by measuring the modulation sidebands induced on the OEO's RF signal by an acoustic tone impinging on the fiber spool in the OEO. The narrow linewidth and high oscillating...
External vibrations induce phase noise in low noise oscillators such as the OEO (opto-electronic oscillator). The g-sensitivity quantifies the efficiency of this process. In fiber-based OEOs, vibrations of the fiber spool dominate the generation of phase noise. In this case, we observe decreasing g-sensitivity with increasing Q-factor (i.e., fiber length). This result indicates the interplay of two...
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